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  • GFZ German Research Centre for Geosciences  (86)
  • Berlin/Heidelberg  (63)
  • Cham : Springer International Publishing  (34)
  • English  (181)
  • Spanish  (2)
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  • 2015-2019  (183)
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  • 1
    Call number: IASS 18.91780
    Description / Table of Contents: Part I - The Polar code and Beyond -- Part II - Arctic Ship Monitoring/Tracking -- Part III - Arctic Governance -- Part IV - Protection and Response in the Arctic Marine Environment -- Part V - Training and Capacity Building -- Part VI - Sustainable Arctic Business Development -- Part VII - Conclusion
    Description / Table of Contents: This volume brings together multiple perspectives on both the changing Arctic environment and the challenges and opportunities it presents for the shipping sector. It argues for the adoption of a forward-looking agenda that respects the fragile and changing Arctic frontier. With the accelerated interest in and potential for new maritime trade routes, commercial transportation and natural resource development, the pressures on the changing Arctic marine environment will only increase. The International Maritime Organization Polar Code is an important step toward Arctic stewardship. This new volume serves as an important guide to this rapidly developing agenda. Addressing a range of aspects, it offers a valuable resource for academics, practitioners, environmentalists and affected authorities in the shipping industry alike
    Type of Medium: Monograph available for loan
    Pages: ix, 486 Seiten , Illustrationen
    ISBN: 9783319784243 , 9783319784250 (eBook)
    Series Statement: WMU Studies in Maritime Affairs 7
    Language: English
    Branch Library: RIFS Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: AWI G2-20-93405
    Description / Table of Contents: This volume describes the complex characteristics of almost all Russian coastal estuaries systematized in the following regions: the coasts of the White Sea, the Barents Sea, the Kara Sea, the Laptev Sea, the East Siberian Sea, the Chukchi Sea, the Black Sea, the Sea of Azov, the Baltic Sea, the Sea of Okhotsk, the Sea of Japan and the Bering Seas. The part on the Baltic Sea includes a detailed description of the Kaliningrad coast and the Gulf of Finland. Apart from the geology and morphology, this book also looks at the anthropogenic effects on shores as well as at hydrological conditions, local climate and water level characteristics, and at economic use of lagoons
    Type of Medium: Monograph available for loan
    Pages: xiii, 270 Seiten , Illustrationen
    ISBN: 9783319433929 , 9783319433905 (print)
    Series Statement: Estuaries of the World
    Language: English
    Note: Contents 1 Specific Features of Estuaries, Lagoons, Limans: Concepts and Terms / Petr Brovko and Ruben Kosyan 2 Estuaries and Lagoons of the Russian Arctic Seas / Vyacheslav Krylenko 3 Estuaries, Lagoons, and Limans of the Marginal Seas of Northeast Asia / Petr Brovko, Yuri Mikishin, and Tamara Ponomareva 4 Lagoons of the Black Sea / Vyacheslav Krylenko and Marina Krylenko 5 Lagoons of the Smallest Russian Sea / Marina Krylenko, Ruben Kosyan, and Vyacheslav Krylenko 6 Transboundary Lagoons of the Baltic Sea / Boris Chubarenko, Dmitriy Domnin, Svetlana Navrotskaya, Zhanna Stont, Vladimir Chechko, Valentina Bobykina, Vasiliy Pilipchuk, Konstantin Karmanov, Anastasea Domnina, Tatiana Bukanova, Victoria Topchaya, and Alexander Kileso 7 Neva Bay: A Technogenic Lagoon of the Eastern Gulf of Finland (Baltic Sea) / Daria Ryabchuk, Vladimir Zhamoida, Marina Orlova, Alexander Sergeev, Julia Bublichenko, Andrey Bublichenko, and Leontina Sukhacheva 8 The White Sea as an Estuarine System / Evgeniy Ignatov, Oleksiy Kalynychenko, and Anatoliy Pantiulin 9 The Diversity of Russian Estuaries / Ruben Kosyan, Petr Brovko, and Jean-Paul Ducrotoy Index
    Location: AWI Reading room
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  • 3
    Call number: 6/M 19.92402
    In: International Association of Geodesy symposia, 149
    Type of Medium: Monograph available for loan
    Pages: ix, 206 Seiten , Illustrationen
    ISBN: 978-3-030-12915-6
    Series Statement: International Association of Geodesy Symposia 149
    Language: English
    Location: Reading room
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  • 4
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: PIK B 010-19-92685
    Description / Table of Contents: Contents: Chapter1. Complex Adaptive Systems and a Sustainability Framework -- Chapter2. Rural Development in the Poyang Lake Region amid Floods -- Chapter3. Assessing Well-being in the Poyang Lake Region -- Chapter4. Understanding the Complex Processes Underlying Well-being of Rural Households -- Chapter5. Exploring Future Rural Development in the Poyang Lake Region -- Chapter6. Sustainability of human-environment systems -- Chapter7. The complex systems approach to policy analysis
    Description / Table of Contents: This volume applies the science of complexity to study coupled human-environment systems (CHES) and integrates ideas from the social sciences of climate change into a study of rural development amid flooding and urbanization in the Poyang Lake Region (PLR) of China. Author Qing Tian operationalizes the concept of sustainability and provides useful scientific analyses for sustainable development in less developed rural areas that are vulnerable to climatic hazards. The book uses a new sustainability framework that is centered on the concept of well-being to study rural development in PLR. The PLR study includes three major analyses: (1) a regional assessment of human well-being; (2) an empirical analysis of rural livelihoods; and (3) an agent-based computer model used to explore future rural development. These analyses provide a meaningful view of human development in the Poyang Lake Region and illustrate some of the complex local- and macro-level processes that shape the livelihoods of rural households in the dynamic process of urbanization. They generate useful insights about how government policy might effectively improve the well-being of rural households and promote sustainable development amid social, economic, and environmental changes. This case study has broader implications. Rural populations in the developing world are disproportionally affected by extreme climate events and climate change. Furthermore, the livelihoods of rural households in the developing world are increasingly under the influences of macro-level forces amid urbanization and globalization. This case study demonstrates that rural development policies must consider broader development dynamics at the national (and even global) level, as well as specific local social and environmental contexts. By treating climate as one of many factors that affect development in such places, we can provide policy recommendations that synergistically promote development and reduce climatic impacts and therefore facilitate mainstreaming climate adaptation into development
    Type of Medium: Monograph available for loan
    Pages: XIX, 150 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9783319526843
    Series Statement: SpringerBriefs in Geography
    Language: English
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 5
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: M 19.92316
    Description / Table of Contents: Due to steadily improving experimental accuracy, relativistic concepts - based on Einstein’s theory of Special and General Relativity - are playing an increasingly important role in modern geodesy. This book offers an introduction to the emerging field of relativistic geodesy, and covers topics ranging from the description of clocks and test bodies, to time and frequency measurements, to current and future observations. Emphasis is placed on geodetically relevant definitions and fundamental methods in the context of Einstein’s theory (e.g. the role of observers, use of clocks, definition of reference systems and the geoid, use of relativistic approximation schemes). Further, the applications discussed range from chronometric and gradiometric determinations of the gravitational field, to the latest (satellite) experiments. The impact of choices made at a fundamental theoretical level on the interpretation of measurements and the planning of future experiments is also highlighted. Providing an up-to-the-minute status report on the respective topics discussed, the book will not only benefit experts, but will also serve as a guide for students with a background in either geodesy or gravitational physics who are interested in entering and exploring this emerging field
    Type of Medium: Monograph available for loan
    Pages: XIII, 479 Seiten , Illustrationen
    ISBN: 978-3-030-11499-2
    Series Statement: Fundamental Theories of Physics 196
    Language: English
    Note: Introduction -- Time and frequency metrology in the context of relativistic geodesy -- Chronometric geodesy: methods and applications -- Measuring the gravitational field in General Relativity: From deviation equations and the gravitational compass to relativistic clock gradiometry -- A Snapshot of J. L. Synge -- General Relativistic Gravity Gradiometry -- Reference-ellipsoid and normal gravity field in post-Newtonian geodesy -- Anholonomity in Pre and Relativistic Geodesy -- Epistemic relativity: An experimental approach to physics -- Use of geodesy and geophysics measurements to probe the gravitational interaction -- Operationalization of basic relativistic measurements -- Can spacetime curvature be used in future navigation systems? -- World-line perturbation theory -- On the applicability of the geodesic deviation equation in General Relativity -- Measurement of frame dragging with geodetic satellites based on gravity field models from CHAMP, GRACE and beyond -- Tests of General Relativity with the LARES Satellites
    Location: Upper compact magazine
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  • 6
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: M 20.93252
    Description / Table of Contents: This book is a collection of ISRM suggested methods for testing or measuring properties of rocks and rock masses both in the laboratory and in situ, as well as for monitoring the performance of rock engineering structures. The first collection (Yellow Book) has been published in 1981. In order to provide access to all the Suggested Methods in one volume, the ISRM Blue Book was published in 2007 (by the ISRM via the Turkish National Group) and contains the complete set of Suggested Methods from 1974 to 2006 inclusive. The papers in this most recent volume have been published during the last seven years in international journals, mainly in Rock Mechanics and Rock Engineering. They offer guidance for rock characterization procedures and laboratory and field testing and monitoring in rock engineering. These methods provide a definitive procedure for the identification, measurement and evaluation of one or more qualities, characteristics or properties of rocks or rock systems that produces a test result.
    Type of Medium: Monograph available for loan
    Pages: 293 Seiten , Graphiken
    Edition: 1st ed. 2015
    ISBN: 978-3-319-36132-1
    Classification:
    Engineering
    Language: English
    Note: The present and future of rock testing: highlighting the ISRM suggested methods Laboratory testing Suggested method for determination of the Schmidt Hammer rebound hardness: revised version Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials Suggested method for the determination of mode II fracture toughness Suggested method for reporting rock laboratory test data in electronic format Upgraded suggested method for determining sound velocity by ultrasonic pulse transmission technique Suggested method for determining the abrasivity of rock by the Cerchar Abrasivity test Suggested method for determining the mode I static fracture toughness using semi-circular bend specimen Suggested methods for determining the creep characteristics of rock Suggested method for laboratory determination of the shear strength of rock joints: revised version Suggested method for the needle penetration test Field testing Suggested method for rock fractures observations using a borehole digital optical televiewer Suggested method for measuring rock mass displacement using a sliding micrometer Suggested method for step-rate injection method for fracture in-situ properties (SIMFIP): Using a 3-Components Borehole Deformation Sensor Suggested Methods for rock stress estimation—Establishing a model for the in situ stress at a given site Monitoring Suggested method for monitoring rock displacements using the global positioning system (GPS) Suggested methods for rock failure criteria: general introduction Introduction to suggested methods for failure criteria Mohr–Coulomb failure criterion The Hoek–Brown failure criterion Three-dimensional failure criteria based on the Hoek–Brown criterion Drucker-Prager criterion Lade and modified Lade 3D rock strength criteria A failure criterion for rocks based on true triaxial testing A survey of 3D laser scanning techniques for application to rock mechanics and rock engineering
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  • 7
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    Cham : Springer International Publishing
    Call number: 9783319468075 (e-book)
    Type of Medium: 12
    Pages: 1 online resource (593 pages) , Illustrationen
    ISBN: 9783319468075
    Language: English
    Note: Contents 1 The Conifers Conifer Taxonomy Geographic Distribution and Biogeography Life History Ecological Tolerance Conifer Mating System, Life Cycle, and Reproduction The Largest, Tallest, and Oldest Organisms on the Planet Genetic Diversity Summary Part I Genomes 2 Genomes: Classical Era The Beginnings of Genome Research in Conifers Chromosome Number and Polyploidy Genome Size Karyotype Analysis Genome Content Organelle Genomes: Chloroplast and Mitochondria Size and Structure Gene Content Inheritance Variation Summary 3 Gene and Genome Sequencing in Conifers: Modern Era A Short History of DNA Sequencing in Conifers Expressed Sequence Tag Sequencing Gene Discovery Using Next-Generation Sequencing Conifer Reference Genome Sequences Sequencing, Assembly, and Annotation Strategies Summary Statistics of Published Conifer Genome Sequences Discovery of the Noncoding DNA Content of Conifer Genomes Discovery of the Number and Types of Coding Genes in Conifers Chloroplast and Mitochondrial Genome Sequencing Summary 4 Noncoding and Repetitive DNA Introduction Ribosomal DNA Tandem Repeats: Satellite, Minisatellite, and Microsatellite DNA Transposons and Retrotransposons Pseudogenes Summary 5 Gene Structure and Gene Families A Short History of Early Conifer Gene Sequencing Wood-Forming Genes Vegetative Growth Genes Floral Genes Light-Regulated Genes Defense-Related Genes Disease-Resistant Genes Summary 6 Gene Expression and the Transcriptome A Short History of Gene Expression Studies in Conifers Wood Formation Biotic Factors Abiotic Factors Seasonal Patterns Epigenetic Control of Gene Expression Summary 7 Proteomics and Metabolomics A Short History of Proteomic and Metabolomic Research in Conifers Wood Formation Biotic Factors Abiotic Factors Seed Development and Somatic Embryogenesis Summary Part II Variation 8 Phenotypic Variation in Natural Populations Introduction Definitions Terms for Describing the Identity of Experimental Plant Materials: Provenance, Population, Seed Source, and Accession Terms for Describing Patterns of Genetic Variation on the Natural Landscape: Cline, Race, and Ecotype Historical Perspectives Application of Common Garden Experiments Experimental Approaches and Analytical Methods Experimental Approaches Analytical Methods Dependent and Independent Variables Common Garden Testing Literature Amount, Distribution, and Pattern of Genetic Variation in Phenotypic Traits of Conifers Amount and Distribution of Genetic Variation Patterns of Variation Are Local Sources Best? Case Studies Pseudotsuga menziesii (Douglas-fir) Pinus Summary 9 Neutral Genetic Variation Introduction and Background Molecular Markers Used in the Study of Neutral Variation Three Conifer Genomes Purpose and Applications of Neutral Genetic Variation Studies General Diversity Results: Allozymes Variation Within Species Variation Within Populations Distribution of Variation Among Populations (Based on Polymorphic Loci only) Differences in Measures of Diversity Among Conifer Genera and Families Allozyme Summary General Diversity Results: Molecular Markers Organelle Markers Nuclear Markers Population Differentiation Factors Affecting Amount and Distribution of Genetic Variation Mating Systems Gene Flow Genetic Drift Case Studies Diversity, Population Structure, and Biogeography Conservation and Mating Systems Effects of Forest Management and Tree Improvement on Genetic Diversity Summary 10 Adaptive Genetic Variation A Short History of Adaptive Genetic Variation in Conifers General Trends in Patterns of Adaptive Genetic Diversity in Conifers Observed from Neutrality and FST Outlier Tests Detection of Nonneutral Genes in a Few Conifer Species Pinus taeda Pinus sylvestris Pinus mugo, P. uncinata, and P. uliginosa Pinus pinaster and P. halepensis Pinus radiata Pinus contorta Pinus massoniana and P. hwangshanensis Pinus lambertiana and Other Subgenus Strobus Species Pseudotsuga menziesii Larix Species Abies Species Picea Species Cryptomeria japonica and Taxodium distichum Summary 11 Quantitative Trait Dissection A Short History of Complex Trait Dissection in Conifers Pinus taeda Pinus elliottii Pinus radiata Pinus sylvestris Pinus pinaster Pinus contorta Pseudotsuga menziesii Picea ssp. Larix ssp. Cryptomeria japonica Summary 12 Landscape Genomics A Short History of Landscape Genomics Studies in Conifers Pinus Subgenus Pinus Pinus Subgenus Strobus Picea Abies and Larix Summary 13 Conservation Genetics A Brief Introduction to Conservation Genetics in Forestry Fragmentation Habitat Loss Forest Practice Disease Insects Climate Change Summary 14 Forest Health Introduction The Growing Relevance of Forest Health Genetic Variation in Forest Health Traits Insects and Disease Abiotic Stress Mechanisms of Resistance and Tolerance Case Studies Resistance to Pissodes strobi (White Pine Weevil) Found in Picea sitchensis (Sitka spruce) Resistance to an Introduced Pathogen (Phytophthora lateralis) in Chamaecyparis lawsoniana (Port-Orford-cedar) Resistance to Stem Rusts in North American White Pines and Southern Yellow Pines Summary Part III Evolution 15 Hybridization and Introgression Introduction Definitions and Background Definitions Background Approaches to Identifying Hybrids and Quantifying Levels of Introgression Evolving Insights Case Studies of Introgressive Hybridization in Conifers Pinus contorta (Lodgepole Pine) x P. banksiana (Jack Pine) Picea sitchensis (Sitka Spruce) x P. glauca (White Spruce) and P. engelmannii (Engelmann Spruce) x P. glauca Pinus taeda (Loblolly Pine) x P. echinata (Shortleaf Pine) Hybrid Speciation Artificial Hybrids Summary 16 Paleobotany, Taxonomic Classification, and Phylogenetics Introduction Paleobotany Taxonomic Classification Cupressus Pinus Phylogenetics Character Selection The Conifers and Related Gymnosperms Araucariaceae Cupressaceae Pinaceae Podocarpaceae Sciadopityaceae Taxaceae Summary 17 Comparative Genomics Introduction to Comparative Genomics Comparative Mapping Comparative Gene Content and Transcriptomics Comparative Genome Sequences Summary 18 Historical Perspective and Future Directions in Forest Genetics and Genomics Historical Perspective Current Situation Future Directions Primary Commercial Species (Group A) Appendix 1 Appendix 2 References Index
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  • 8
    Call number: 6/M19.92211
    In: International Association of Geodesy Symposia, 148
    Description / Table of Contents: Part 1 Global gravity field modelling -- Rigorous evaluation of gravity field functionals from satellite-only gravitational models within topography -- Application of the Recursive Least-Squares adaptive filter on simulated satellite gravity gradiometry data -- Part 2 Local/regional geoid determination methods and models -- Accuracy of regional geoid modelling with GOCE -- The effect of noise on geoid height in Stokes-Helmert method -- Approximation of local quasi-geoid using point mass method based on Bjerhammar theory -- Optimal combination of satellite and terrestrial gravity data for regional geoid determination using Stokes-Helmert’s method, the Auvergne test case -- New modifications of Stokes’ Integral -- Gravimetric investigations at Vernagtferner -- Analysis of the GRAV-D airborne gravity data for geoid modelling -- The African 300”x300” DTM and its validation -- Evaluation of the African Gravity Database AFRGDB V1.0 -- Part 3 Absolute and relative gravity: observations and methods -- New absolute gravity measurements in New Zealand -- Strapdown airborne gravimetry using a combination of commercial software and stable-platform gravity estimates -- First six months of superconducting gravimetry in Argentina -- Tilt susceptibility of the Scintrex CG-5 Autograv gravity meter revisited -- Gravity calibration baseline between Jeddah and Taif in the Kingdom of Saudi Arabia -- Part 4 Height systems and vertical datum unification -- Investigation of geoid height variations and vertical displacements of the Earth surface in the context of the realization of a modern vertical reference system - A case study for Poland -- Analysis of GOCE omission error and its contribution to vertical datum offsets in Greece and its Islands -- Quality control of height benchmarks in Attica, Greece, combining GOCE/GRACE satellite data, global geopotential models and detailed terrain information -- GOCE variance and covariance contribution to height system unification -- The use of GNSS/levelling and gravity data for the Spanish height system unification -- Comparison of different approaches to gravity determination and their utilization for calculation of geopotential numbers in the Slovak national levelling network -- Assessment of the Greek Vertical Datum - A case study in central Greece -- Evaluation of NRTK-based heighting techniques from different continuously operating GNSS reference networks in Greece -- Part 5 Satellite altimetry and climate-relevant processes -- SLA determination in coastal areas using Least-Squares Collocation and Cryosat-2 data -- Spectral analysis and validation of Multiple Input / Multiple Output DOT estimation in the Eastern Mediterranean Sea -- Preliminary Results on the Estimation of Ground Water in Africa using GRACE and Hydrological Models
    Description / Table of Contents: These proceedings contain 27 papers, which are the peer-reviewed versions of presentations made at the International Association of Geodesy (IAG) symposium “Gravity, Geoid and Height Systems 2016” (GGHS2016). GGHS2016 was the first Joint international symposium organized by IAG Commission 2 “Gravity Field”, the International Gravity Field Service (IGFS) and the GGOS Focus Area “Unified Height System”. It took place in Thessaloniki, Greece, in September 19-23, 2016 at the premises of the Aristotle University of Thessaloniki. The symposium was organized by the Department of Geodesy and Surveying of the Aristotle University of Thessaloniki, which presently hosts the IGFS Central Bureau. The focus of the Symposium was on methods for observing, estimating and interpreting the Earth gravity field as well as its applications. GGHS2016 continued the long and successful history of IAG’s Commission 2 Symposia
    Type of Medium: Monograph available for loan
    Pages: IX, 230 Seiten
    ISBN: 9783319953182 , 9783319953175 (print) , 9783319953199 (print)
    Series Statement: International Association of Geodesy Symposia 148
    Language: English
    Location: Reading room
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  • 9
    Call number: PIK N 531-19-92204
    Description / Table of Contents: This book aims to identify, present and discuss key driving forces and pressures on ecosystem services. Ecosystem services are the contributions that ecosystems provide to human well-being. The scope of this atlas is on identifying solutions and lessons to be applied across science, policy and practice. The atlas will address different components of ecosystem services, assess risks and vulnerabilities, and outline governance and management opportunities. The atlas will therefore attract a wide audience, both from policy and practice and from different scientific disciplines. The emphasis will be on ecosystems in Europe, as the available data on service provision is best developed for this region and recognizes the strengths of the contributing authors. Ecosystems of regions outside Europe will be covered where possible.
    Description / Table of Contents: Human well-being is significantly affected by the contributions provided by ecosystems, or ecosystem services. In this well-illustrated atlas, world-class experts identify and discuss key driving forces, trade-offs, and synergies of ecosystem services. Through interdisciplinary case studies varying across ecosystems and scales, this atlas narrows the knowledge gap between ecosystem services management and related fields of study. This atlas begins with conceptual background and proceeds to present drivers and their risks for ecosystems, their functions and services, and biodiversity. Trade-offs and synergies among ecosystem services and societal responses to the drivers and trade-offs are discussed. Sustainable land management and governance concepts are demonstrated throughout the atlas. Environmental scientists, practitioners and policy makers worldwide will appreciate the solutions and best practices identified throughout the chapters. Students of environmental sciences, socio-economics and landscape planning will find this atlas to be a valuable read, as well
    Type of Medium: Monograph available for loan
    Pages: XXX, 414 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9783319962283 , 9783319962290
    Language: English
    Note: Contents: The Risk to Ecosystems and Ecosystem Services: A Framework for the Atlas of Ecosystem Services ; The Ecosystem Service Concept: Linking Ecosystems and Human Wellbeing ; The Link Between Diversity, Ecosystem Functions, and Ecosystem Services ; Embracing Community Resilience in Ecosystem Management and Research ; Risk and Uncertainty as Sources of Economic Value of Biodiversity and Ecosystem Services ; Taking Social Responsibility in Using Ecosystem Services Concepts: Ethical Issues of Linking Ecosystems and Human Well-Being ; Introduction to Part II: Drivers and Their Risks for Ecosystems, Their Functions, and Services ; Scaling Sensitivity of Drivers ; The Evidence for Genetic Diversity Effects on Ecosystem Services ; Using Dynamic Global Vegetation Models (DGVMs) for Projecting Ecosystem Services at Regional Scales ; Remote Sensing Measurements of Forest Structure Types for Ecosystem Service Mapping ; Mapping Land System Archetypes to Understand Drivers of Ecosystem Service Risks ; Assessment of Soil Functions Affected by Soil Management ; Mediterranean Wetlands: A Gradient from Natural Resilience to a Fragile Social-Ecosystem ; Vulnerability of Ecosystem Services in Farmland Depends on Landscape Management ; Provisioning Ecosystem Services at Risk: Pollination Benefits and Pollination Dependency of Cropping Systems at the Global Scale ; Minimising Risks of Global Change by Enhancing Resilience of Pollinators in Agricultural Systems ; Drivers of Risks for Biodiversity and Ecosystem Services: Biogas Plants Development in Germany ; European Energy Governance Landscapes: Energy-Related Pressures on Ecosystem Services ; Wind Power Deployment as a Stressor for Ecosystem Services: A Comparative Case Study from Germany and Sweden ; Selected Trade-Offs and Risks Associated with Land Use Transitions in Central Germany ; New EU-Level Scenarios on the Future of Ecosystem Services ; The Rural-to-Urban Gradient and Ecosystem Services ; How to Reconcile the Ecosystem Service of Regulating the Microclimate with Urban Planning Projects on Brownfields? The Case Study Bayerischer Bahnhof in Leipzig, Germany ; Urban Green Infrastructure in Support of Ecosystem Services in a Highly Dynamic South American City: A Multi-Scale Assessment of Santiago de Chile ; Climate Regulation by Diverse Urban Green Spaces: Risks and Opportunities Related to Climate and Land Use Change ; Climate Change as Driver for Ecosystem Services Risk and Opportunities ; Capacity of Ecosystems to Degrade Anthropogenic Chemicals ; Impacts of Nitrogen Deposition on Forest Ecosystem Services and Biodiversity ; Ecosystem Services from Inland Waters and Their Aquatic Ecosystems ; Groundwater Ecosystems and Their Services: Current Status and Potential Risks ; Drinking Water Quality at Risk: A European Perspective ; Pesticide Effects on Stream Ecosystems ; How Good Are Bad Species? ; Alien Planktonic Species in the Marine Realm: What Do They Mean for Ecosystem Services Provision? ; Invasion of the Wadden Sea by the Pacific Oyster (Magallana gigas): A Risk to Ecosystem Services? ; International Trade and Global Flows of Ecosystem Services ; Introduction to Part III: Trade-Offs and Synergies Among Ecosystem Services ; Trade-Offs and Synergies Between Biodiversity Conservation and Productivity in the Context of Increasing Demands on Landscapes ; Climate Change Induced Carbon Competition: Bioenergy Versus Soil Organic Matter Reproduction ; Removal of Agricultural Residues from Conventional Cropping Systems ; Shrinking Cities and Ecosystem Services: Opportunities, Planning, Challenges, and Risks ; Spatial Patterns of Ecosystem Service Bundles in Germany ; Indicators of Ecosystem Services for Policy Makers in the Netherlands ; The Montérégie Connection: Understanding How Ecosystems Can Provide Resilience to the Risk of Ecosystem Service Change ; Synchronized Peak Rate Years of Global Resources Use Imply Critical Trade-Offs in Appropriation of Natural Resources and Ecosystem Services
    Location: A 18 - must be ordered
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  • 10
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: M 19.92969
    Description / Table of Contents: This book on space geodesy presents pioneering geometrical approaches in the modelling of satellite orbits and gravity field of the Earth, based on the gravity field missions CHAMP, GRACE and GOCE in the LEO orbit. Geometrical approach is also extended to precise positioning in space using multi-GNSS constellations and space geodesy techniques in the realization of the terrestrial and celestial reference frame of the Earth. This book addresses major new developments that were taking place in space geodesy in the last decade, namely the availability of GPS receivers onboard LEO satellites, the multitude of the new GNSS satellite navigation systems, the huge improvement in the accuracy of satellite clocks and the revolution in the determination of the Earth's gravity field with dedicated satellite missions
    Type of Medium: Monograph available for loan
    Pages: xxiii, 537 Seiten , Illustrationen
    ISBN: 978-3-319-76872-4
    Series Statement: Springer Theses, Recognizing Outstanding Ph.D. Research
    Classification:
    Geodetic Theory and Modeling
    Language: English
    Note: Inhaltsverzeichnis: - The First Geometric POD of LEO Satellites - a Piece of History - Reference Frame From the Combination of a LEO Satellite with GPS Constellation and Ground Network of GPS Stations - Geometrical Model of the Earth’s Geo center Based on Temporal Gravity Field Maps - First Phase Clocks and Frequency Transfer - First Geometric POD of GPS and Galileo Satellites - Kinematics of IGS Stations - Reduced-Kinematic POD - First GPS Baseline in Space - the GRACE Mission - Geometrical Modeling of the Ionosphere and the Troposphere with LEO Orbit - Aerodynamics in Low LEO: A Novel Approach to Modeling Air Density Based on IGS TEC Maps - GPS Single-Frequency: From First cm-POD to Single Frequency GNSS-RO/R - Absolute Code Biases Based on the Ambiguity-Free Linear Combination - DCBs without TEC - LEO Near-Field Multipath and Antenna Effects - Probing the Flyby Anomaly Using Kinematic POD - Exotic Applications of Kinematic POD - Galileo-2: A Highly Accurate Dynamical GEO Reference Frame to Complement the TRF - Geometrical Representation of Gravity Field Determination
    Location: Upper compact magazine
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  • 11
    Call number: https://doi.org/10.1007/978-3-319-72026-5 [Volltext]
    Description / Table of Contents: This book provides an authoritative insight on the Loss and Damage discourse by highlighting state-of-the-art research and policy linked to this discourse and articulating its multiple concepts, principles and methods. Written by leading researchers and practitioners, it identifies practical and evidence-based policy options to inform the discourse and climate negotiations. With climate-related risks on the rise and impacts being felt around the globe has come the recognition that climate mitigation and adaptation may not be enough to manage the effects from anthropogenic climate change. This recognition led to the creation of the Warsaw International Mechanism on Loss and Damage in 2013, a climate policy mechanism dedicated to dealing with climate-related effects in highly vulnerable countries that face severe constraints and limits to adaptation. Endorsed in 2015 by the Paris Agreement and effectively considered a third pillar of international climate policy, debate and research on Loss and Damage continues to gain enormous traction. Yet, concepts, methods and tools as well as directions for policy and implementation have remained contested and vague. Suitable for researchers, policy-advisors, practitioners and the interested public, the book furthermore: • discusses the political, legal, economic and institutional dimensions of the issue • highlights normative questions central to the discourse • provides a focus on climate risks and climate risk management • presents salient case studies from around the world
    Description / Table of Contents: Chapter 1. Overview: Climate risk management and justice for the L&D debate -- Chapter 2. History of debate: from climate justice to climate risk management.-Chapter 3. What is Loss & Damage? Perspectives & Concepts -- Chapter 4.Weather related losses and damages: what can we learn from disaster data? -- Chapter 5. Frontiers in science for supporting L&D decision making -- Chapter 6. Attribution -- Chapter 7. Legal liability -- Chapter 8. What does non-economic loss and damage mean and what challenge does it present to the L&D Mechanism? -- Chapter 9. Loss & Damage to ecosystem services -- Chapter 10. Technology Justice and Loss and damage -- Chapter 11. Integrated Management of Climate Risk -- Chapter 12. A Socio-Economic Climate Risk Management Framework to inform the Loss and Damage mechanism -- Chapter 13.Exploring adaptation frontiers with insurance: the role of risk transfer -- Chapter 14. Climate insurance and risk management: From AOSIS to MCII to InsuResilience -- Chapter 15. Climate insurance? Reviewing regional sovereign insurance pools -- Chapter 16.Balancing liability and needs - a principled approach for the L&D mechanism -- Chapter 17. The case for Loss and Damage in Bangladesh -- Chapter 18. Local-level Implementation of Loss and Damage: insights from the Zurich Flood Resilience Alliance work in Peru & Nepal
    Type of Medium: 12
    Pages: Online-Ressource (XXII, 557 p. 107 illus., 97 illus. in color, online resource)
    Edition: Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319720265
    Series Statement: Climate Risk Management, Policy and Governance
    URL: Volltext  (kostenfrei)
    Language: English
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  • 12
    Call number: M 20.93843
    Description / Table of Contents: This book presents a comprehensive overview of the freezing of colloidal suspensions and explores cutting-edge research in the field. It is the first book to deal with this phenomenon from a multidisciplinary perspective, and examines the various occurrences, their technological uses, the fundamental phenomena, and the different modeling approaches. Its chapters integrate input from fields as diverse as materials science, physics, biology, mathematics, geophysics, and food science, and therefore provide an excellent point of departure for anyone interested in the topic.The main content is supplemented by a wealth of figures and illustrations to elucidate the concepts presented, and includes a final chapter providing advice for those starting out in the field. As such, the book provides an invaluable resource for materials scientists, physicists, biologists, and mathematicians, and will also benefit food engineers, civil engineers, and materials processing professionals.
    Type of Medium: Monograph available for loan
    Pages: XXIII, 598 Seiten , Illustrationen
    ISBN: 978-3-319-50513-8
    Language: English
    Branch Library: GFZ Library
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  • 13
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: IASS 20.94311
    Description / Table of Contents: 1. Introduction.-2. Assessment of Warming Projections and Probabilities for Brazil -- 3. Agricultural Sector -- 4. Health Sector -- 5. Biodiversity Sector -- 6. Energy Sector -- 7. Final Remarks and Recommendations -- Glossary
    Description / Table of Contents: This book maps extreme temperature increase under dangerous climate change scenarios in Brazil and their impacts on four key sectors: agriculture, health, biodiversity and energy. The book draws on a careful review of the literature and climate projections, including relative risk estimates. This synthesis summarizes the state-of-the-art knowledge and provides decision-makers with risk analysis tools, to be incorporated in public planning policy, in order to understand climate events which may occur and which may have significant consequences
    Type of Medium: Monograph available for loan
    Pages: XVIII, 226 S. , Illustrationen
    ISBN: 9783319928807 , 9783319928821 , 9783319928814
    Language: English
    Branch Library: RIFS Library
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  • 14
    Call number: 6/M 16.90069 ; 6/M 16.90069/ 2. Ex. ; 6/M 16.90069/ 3. Ex.
    In: International Association of Geodesy Symposia, 143
    Description / Table of Contents: This proceedings contains a selection of peer-reviewed papers presented at the IAG Scientific Assembly, Postdam, Germany, 1-6 September, 2013. The scientific sessions were focussed on the definition, implementation and scientific applications of reference frames; gravity field determination and applications; the observation and assessment of earth hazards. It presents a collection of the contributions on the applications of earth rotations dynamics, on observation systems and services as well as on imaging and positioning techniques and its applications.
    Type of Medium: Monograph available for loan
    Pages: xiv, 798 S.
    ISBN: 9783319246031
    Series Statement: International Association of Geodesy Symposia 143
    Classification:
    Geodesy
    Language: English
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  • 15
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: M 16.89585
    Description / Table of Contents: This manuscript sets out a process for estimating fatalities in collapsed buildings due to ground shaking in an earthquake. The aim of this research is to supplement current earthquake loss estimation with fatality rates (percentage of occupants killed) for use in models which are based on recent empirical information on deaths from earthquakes. This document specifically explores the lethality potential to occupants of collapsed structures. Whilst earthquake casualty modeling has admittedly suffered from a lack of post-earthquake collection of data and rigour in assessing these data, recent earthquakes such as 2008 Wenchuan (China) and 2011 Christchurch (New Zealand) have brought to light some important findings. Under the auspices of US Geological Survey’s PAGER, empirical fatality data related to collapses of buildings from significant earthquakes in the past 40 years have been thoroughly examined. Through detailed investigations of fatal building collapses and the volume reductions within these buildings, important clues related to the lethality potential of different failure mechanisms of global modern and older construction types were found. The gathered evidence forms the basis of the derivation of a set of fatality rates for use in loss models. The set of judgment-based rates are for 31 global building types. This significant advancement in casualty modeling, the resolutions and quality of available data, the important assumptions made, and the final derivation of fatality rates are discussed here. This document contributes to global efforts to develop a way of estimating probable earthquake fatalities very rapidly after an earthquake has taken place. The fatality rates proposed here can be incorporated directly into earthquake loss estimation models where fatalities are derived from collapses of different types of buildings
    Type of Medium: Monograph available for loan
    Pages: XI, 62 S.
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319268378
    Series Statement: SpringerBriefs in Earth Sciences
    Classification:
    Seismology
    Language: English
    Note: IntroductionMain Assumptions of the Assignment Process -- Definition of Collapse -- Proposing a Range for Fatality Rates in a Collapsed Building -- Assignments of judgment-based fatality rates -- Conclusions. ..
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  • 16
    Call number: IASS 16.89795
    Description / Table of Contents: Interdisciplinarity has seemingly become a paradigm for modern and meaningful research. Clearly, the interdisciplinary modus of deliberation enables to unfold relevant but quite different disciplinary perspectives to the reflection of broader scientific questions or societal problems. However, whether the comprehensive results of interdisciplinary reflection prove to be valid or to be acceptable in trans-disciplinary terms depends upon certain preconditions, which have to be fulfilled for securing scientific quality and social trust in advisory contexts. The present book is written by experts and practitioners of interdisciplinary research and policy advice. It analyses topical and methodological approaches towards interdisciplinarity, starting with the current role of scientific research in society. The volume continues with contributions to the issues of knowledge and acting and to trans-disciplinary deliberation. The final conclusions address the scientific system as substantial actor itself as well as the relevant research and education politics
    Type of Medium: Monograph available for loan
    Pages: XVI, 195 p. 6 illus., 4 illus. in color
    Edition: Online edition Springer eBook Collection. Engineering
    ISBN: 9783319114002 , 9783319113999
    Series Statement: Ethics of Science and Technology Assessment, Schriftenreihe der EA European Academy of Technology and Innovation Assessment GmbH 43
    Language: English
    Note: IntroductionScience in Society -- Knowing and Acting -- Trans-disciplinary Deliberation -- Conclusions/Recommandations..
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  • 17
    Call number: M 17.90354
    Description / Table of Contents: Fiber optic sensors based on nano-films -- Lossy Mode Resonances based sensors -- Surface Plasmon Resonances based fiber optic sensors -- Plastic optical fiber biosensors -- Vapor based deposition techniques for optical fiber sensing -- Fiber optic sensors in biomedical applications -- Optical hyperspectral sensors -- Fiber optic sensors for radiation dosimetry -- Fiber optic gas sensors -- Structural health monitoring fiber optic sensors -- Distributed temperature sensors -- Respiratory diseases fiber optic based sensors -- Optical sensing based on photonic crystal structures -- Long Period grating based sensors -- Magnetic field fiber optic sensors -- Sensing at THz frecuencies -- Multimode Interference Fiber Sensors -- Fiber optics sensors based on multicore structures
    Description / Table of Contents: This book describes important recent developments in fiber optic sensor technology and examines established and emerging applications in a broad range of fields and markets, including power engineering, chemical engineering, bioengineering, biomedical engineering, and environmental monitoring. Particular attention is devoted to niche applications where fiber optic sensors are or soon will be able to compete with conventional approaches. Beyond novel methods for the sensing of traditional parameters such as strain, temperature, and pressure, a variety of new ideas and concepts are proposed and explored. The significance of the advent of extended infrared sensors is discussed, and individual chapters focus on sensing at THz frequencies and optical sensing based on photonic crystal structures. Another important topic is the resonances generated when using thin films in conjunction with optical fibers, and the enormous potential of sensors based on lossy mode resonances, surface plasmon resonances, and long-range surface exciton polaritons. Detailed attention is also paid to fiber Bragg grating sensors and multimode interference sensors. Each chapter is written by an acknowledged expert in the subject under discussion
    Type of Medium: Monograph available for loan
    Pages: VIII, 381 Seiten , Illustrationen
    ISBN: 9783319426242
    Series Statement: Smart Sensors, Measurement and Instrumentation 21
    Classification:
    Engineering
    Language: English
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  • 18
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: 11/M 16.89937
    Description / Table of Contents: Constitutive Equation -- Micromechanics -- Variational Energy Formulation -- Anisotropy -- Governing Equation -- Analytical Solution -- Fundamental Solution and Integral Equation -- Poroelastodynamics -- Poroviscoelasticity -- Porothermoelasticity -- Porochemoelasticity -- Appendices -- Index
    Description / Table of Contents: This book treats the mechanics of porous materials infiltrated with a fluid (poromechanics), focussing on its linear theory (poroelasticity). Porous materials from inanimate bodies such as sand, soil and rock, living bodies such as plant tissue, animal flesh, or man-made materials can look very different due to their different origins, but as readers will see, the underlying physical principles governing their mechanical behaviors can be the same, making this work relevant not only to engineers but also to scientists across other scientific disciplines. Readers will find discussions of physical phenomena including soil consolidation, land subsidence, slope stability, borehole failure, hydraulic fracturing, water wave and seabed interaction, earthquake aftershock, fluid injection induced seismicity and heat induced pore pressure spalling as well as discussions of seismoelectric and seismoelectromagnetic effects. The work also explores the biomechanics of cartilage, bone and blood vessels. Chapters present theory using an intuitive, phenomenological approach at the bulk continuum level, and a thermodynamics-based variational energy approach at the micromechanical level. The physical mechanisms covered extend from the quasi-static theory of poroelasticity to poroelastodynamics, poroviscoelasticity, porothermoelasticity, and porochemoelasticity. Closed form analytical solutions are derived in details. This book provides an excellent introduction to linear poroelasticity and is especially relevant to those involved in civil engineering, petroleum and reservoir engineering, rock mechanics, hydrology, geophysics, and biomechanics
    Type of Medium: Monograph available for loan
    Pages: XXVI, 877 p. 171 illus., 62 illus. in color
    ISBN: 9783319252025 , 9783319252001
    Series Statement: Theory and Applications of Transport in Porous Media 27
    Parallel Title: Print version Poroelasticity
    Language: English
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  • 19
    Call number: 10/M 18.90965 ; M 18.90965
    Description / Table of Contents: The book summarizes the knowledge and experiences concerning the role of halogens during various geochemical processes, such as diagenesis, ore-formation, magma evolution, metasomatism, mineralization, and metamorphism in the crust and mantle of the Earth. It comprises the role of halogens in other terrestrial worlds like volatile-rich asteroids, Mars, and the ice moons of Jupiter and Saturn. Review chapters outline and expand upon the basis of our current understanding regarding how halogens contribute to the geochemical/geophysical evolution and stability of terrestrial worlds overall.
    Type of Medium: Monograph available for loan
    Pages: vi, 1030 Seiten
    Edition: 1st edition 2018
    ISBN: 978-3-319-61665-0
    Series Statement: Springer Geochemistry
    Classification:
    Geochemistry
    Language: English
    Location: Reading room
    Location: Upper compact magazine
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  • 20
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: 10/M 17.91211 ; M 18.91287
    Type of Medium: Monograph available for loan
    Pages: v, 289 Seiten
    ISBN: 9783319646640
    Series Statement: Advances in isotope geochemistry
    Classification:
    Geochemistry
    Language: English
    Location: Reading room
    Location: Upper compact magazine
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  • 21
    Call number: M 18.91464
    In: Astrophysics and space science library
    Description / Table of Contents: This book addresses and reviews many of the still little understood questions related to the processes underlying planetary magnetic fields and their interaction with the solar wind. With focus on research carried out within the German Priority Program ”PlanetMag”, it also provides an overview of the most recent research in the field. Magnetic fields play an important role in making a planet habitable by protecting the environment from the solar wind. Without the geomagnetic field, for example, life on Earth as we know it would not be possible. And results from recent space missions to Mars and Venus strongly indicate that planetary magnetic fields play a vital role in preventing atmospheric erosion by the solar wind. However, very little is known about the underlying interaction between the solar wind and a planet’s magnetic field. The book takes a synergistic interdisciplinary approach that combines newly developed tools for data acquisition and analysis, computer simulations of planetary interiors and dynamos, models of solar wind interaction, measurement of ancient terrestrial rocks and meteorites, and laboratory investigations
    Type of Medium: Monograph available for loan
    Pages: XVIII, 413 p. 163 illus., 102 illus. in color
    Edition: Online edition Springer eBook Collection. Physics and Astronomy
    ISBN: 9783319642925 , 9783319642918 (print)
    Series Statement: Astrophysics and Space Science Library 448
    Classification:
    Geomagnetism, Geoelectromagnetism
    Language: English
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  • 22
    Call number: 6/M 16.89962
    In: International Association of Geodesy Symposia, 142
    Description / Table of Contents: Part I Lincei session -- Opening remarks for the 2013 Hotine-Marussi symposium -- Fernado Sansò laudation -- Global Reference Systems: Theory and open questions -- Part II Geodetic data analysis -- Noise analysis of continuous GPS time series of selected EPN stations to investigate variations in stability of monument types -- Improvement of Least-Squares Collocation error estimates using local GOCE Tzz signal standard deviations -- Multivariate Integer Cycle-Slip Resolution: A Single-Channel Analysis -- Theory of Earth Rotation Variations -- Variable seasonal and subseasonal oscillations in sea level anomaly data and their impact on prediction accuracy -- Permanent GPS networks in Italy: analysis of time series noise -- VADASE: state of the art and new developments of a third way to GNSS Seismology -- On the spatial resolution of homogeneous isotropic filters on the sphere -- On time-variable seasonal signals: comparison of SSA and Kalman filtering based approach -- Extensive analysis of IGS REPRO1 coordinate time series -- Part III Geopotential modeling, boundary value problems and height systems -- Determination of W0 from the GOCE measurements using the method of fundamental solutions -- Combination of GOCE gravity gradients in regional gravity field modelling using radial basis functions -- Rosborough representation in satellite gravimetry -- Combining Different Types of Gravity Observations in Regional Gravity Modeling in Spherical Radial Basis Functions -- Height Datum Unification by Means of the GBVP Approach Using Tide Gauges -- Computation of Zenith Total Delay Correction Fields using Ground-Based GNSS -- Rigorous interpolation of atmospheric state parameters for ray-traced tropospheric delays -- Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans -- Part V Gravity field mapping methodology from GRACE and future gravity missions -- The role of position information for the analysis of K-Band data - experiences from GRACE and GOCE for GRAIL gravity field recovery -- Gravity field mapping from GRACE: different approaches - same results? -- The effect of pseudo-stochastic orbit parameters on GRACE monthly gravity fields - insights from lumped coefficients -- On an iterative approach to solving the nonlinear satellite-fixed geodetic boundary-value problem -- An OpenCL implementation of ellipsoidal harmonics -- A remark on the computation of the gravitational potential of masses with linearly varying density -- The observation equation of spirit leveling in Molodensky’s context -- Reference station weighting and frame optimality in minimally constrained networks -- Atmospheric loading and mass variation effects on the SLR-defined geocenter -- Part VIII Digital Terrain Modeling, Synthetic Aperture Radar and new sensors: theory and methods -- Radargrammetric Digital Surface Models Generation from High Resolution Satellite SAR Imagery: Methodology and Case Studies -- Principles and applications of polarimetric SAR tomography for the characterization of complex environments -- Merging local DTMs: methodological problems and practical solutions on heli-dem case study -- Part IX Inverse modeling, estimation theory -- Single-Epoch GNSS Array Integrity: an Analytical Study -- Global to local Moho estimate based on GOCE geopotential model and local gravity data -- An overview of adjustment methods for mixed additive and multiplicative random error models -- Cycle slip detection and correction for heading determination with low-cost GPS/ INS receivers -- Adjusting the errors-in-variables model: linearized least-squares vs. nonlinear total least-squares -- Multivariate GNSS Attitude Integrity: the Role of Affine Constraints -- Integrating geological prior information into the inverse gravimetric problem: the Bayesian approach -- Effects of Different Objective Functions in Inequality Constrained and Rank-Deficient Least-Squares Problems
    Description / Table of Contents: This volume contains the proceedings of the VIII Hotine-Marussi Symposium on Mathematical Geodesy, which was held June 17 to 21, 2013, in Rome, Italy. Since 2006 the series of Hotine-Marussi Symposia is under the responsibility of the InterCommission Committee on Theory (ICCT), a cross-commission entity within the International Association of Geodesy (IAG). The overall goal of the Hotine-Marussi Symposia has always been the advancement of theoretical geodesy. The 39 papers in these proceedings areindeed testimony to the width and vibrancy of theoretical geodesy. The Symposium was organized in 8 topical sessions reflecting all branches of geodesy: from geodetic data analysis through potential field modeling to estimation theory. Also theoretical aspects of reference frames and of novel sensors were covered. During a special session at the AccademiaNazionaledeiLinceiFernando Sansò was put into the spotlight in order to acknowledge his long-term commitment and dedication as the driving force behind the series of Hotine-Marussi Symposia over the past decades
    Type of Medium: Monograph available for loan
    Pages: XIV, 340 S.
    Edition: 1st ed. 2016
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319245485
    Series Statement: International Association of Geodesy Symposia 142
    Classification:
    Geodesy
    Language: English
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  • 23
    Call number: M 16.90275
    Description / Table of Contents: Preface -- Contents -- Contributors -- Part I: Limnology, History and Comparative Legends -- 1: Pavin, the Birthplace of French Limnology (1770-2012), and Its Degassing Controversy (1986-2016) -- 1.1 Introduction -- 1.2 Analysis of Pavin Actors, History and Perception Through an Interdisciplinary and Intercomparative Approach -- 1.3 Pavin, a Typical Maar-Lake Above any Contamination Source -- 1.3.1 Pavin General Features -- 1.3.2 Pavin Compared to Other Lakes of the Cézallier Lake District -- 1.3.3 Pavin Compared to Other European Maar-Lakes -- 1.3.3.1 Eifel Lakes
    Description / Table of Contents: 1.3.3.2 Italian Lakes -- 1.4 Pavin Scientific Exploration (1770-1985) -- 1.4.1 Chevalier's Expedition (1770) -- 1.4.2 Lecoq, the Great Auvergne Naturalist, Normalizes Pavin… with Fishes (1847-1871) -- 1.4.3 The First Golden Age of Science at Pavin: Berthoule, Delebecque, Martel, Bruyant (1880-1914) -- 1.4.3.1 Clermont Botanists and Zoologists Establish the Limnological Station at Besse -- 1.4.3.2 André Delebecque at Pavin (1892) -- 1.4.3.3 Edouard-Alfred Martel at Creux de Soucy (1892) -- 1.4.4 Pavin Meromixis Discovery by Olivier and Pelletier (1950-1960s)
    Description / Table of Contents: 1.5 Pavin Acquires a Status of International Field Laboratory (1965-2000) -- 1.5.1 International Projects Select Pavin as a Pristine Lake (1965-1975) -- 1.5.2 Pavin, a Laboratory for Innovative Lake Research (1965-1986) -- 1.6 Maar Lakes Degassing Evidence in Cameroun and Italy -- 1.6.1 Nyos (21 August 1986) and Monoun (15 August 1984) Degassing Events and Their Effects on Populations -- 1.6.2 Ancient Degassing Events in Italian Maar-Lakes, Albano and Monticchio -- 1.6.2.1 The Albano Catastrophic Degassing and Spillover Event in Latium (398 BC)
    Description / Table of Contents: 1.6.2.2 Monticchio Lakes (Southern Italy) and Their Pioneer Degassing Studies, 1777-1838 -- 1.7 Sensory Grid of Degassing in Maar-Lakes -- 1.8 Pavin Degassing Controversy (1986-2016) -- 1.9 Conclusions -- References -- 2: Pavin, A Rich but Fragmented History (200 AD-2016) -- 2.1 Introduction -- 2.2 Finding Pavin Puzzle Pieces -- 2.3 Pavin's History Highlights -- 2.3.1 Antiquity: A Pompeian Millstone Retrieved from Pavin Waters in 1909 -- 2.3.2 Early Antique and Medieval Worship Near Pavin, on the Vassivière Mountain
    Description / Table of Contents: 2.3.3 Lacus pavens Terrifies the Whole Region Throughout the Sixteenth Century -- 2.3.3.1 The Terrible Explosion Witnessed at Vassivière by Besse People (28 August 1551 Pavin Event) -- 2.3.3.2 A Hazardous Abyss, Generating Storm, Thunder and Hail, Presented to Charles IX (1566) -- 2.3.3.3 Pavin Painted on the First Realistic Landscape Picture in France (1571-1579) -- 2.3.3.4 Pavin Marvelous Response to a Thrown Stone in Belleforest's Cosmographia Universalis (1575) -- 2.3.3.5 Lacus pavens, the Terrifying Lake, Is the Original Pavin Name (Banc 1605)
    Description / Table of Contents: 2.3.4 The Admirable and Terrifying Pavens Gets Famous During the Seventeenth Century
    Type of Medium: Monograph available for loan
    Pages: XV, 421 S.
    ISBN: 9783319399607
    Classification:
    Historical Geology
    Language: English
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  • 24
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: 10/M 16.89929
    Description / Table of Contents: This work summarizes the historical progression of the field of lithium (Li) isotope studies and provides a comprehensive yet succinct overview of the research applications toward which they have been directed. In synthesizing the historical and current research, the volume also suggests prospective future directions of study. Not even a full decade has passed since the publication of a broadly inclusive summary of Li isotope research around the globe (Tomascak, 2004). In this short time, the use of this isotope system in the investigation of geo- and cosmochemical questions has increased dramatically, due, in part, to the advent of new analytical technology at the end of the last millennium. Lithium, as a light element that forms low-charge, moderate-sized ions, manifests a number of chemical properties that make its stable isotope system useful in a wide array of geo- and cosmochemical research fields.  
    Type of Medium: Monograph available for loan
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319014302 , 9783319014296
    Series Statement: Advances in isotope geochemistry
    Classification:
    Geochemistry
    Language: English
    Note: Methodology of Lithium Analytical Chemistry and Isotopic MeasurementsCosmochemistry of Lithium -- Li Partitioning, Diffusion and Associated Isotopic Fractionation: Theoretical and Experimental Insights -- Lithium in the Deep Earth: Mantle and Crustal Systems -- The Surficial Realm: Low Temperature Geochemistry of Lithium..
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  • 25
    Call number: 5/M 17.90712
    Description / Table of Contents: 1. Introduction -- 2. Applications of Seismic Monitoring in Combating Rock Burst Hazard -- 3. Seismic Parameters and their Physical Meaning -- 4. Ranges of Parameters -- 5. Interpretation Methods of Mine Induced Seismicity -- 6. Palabora Seismic History -- 7. Palabora Caving Process as Evidenced by Induced Seismicity -- 8. Caving Process and Seismic Hazard -- 9. Problems Related to Software Versions -- 10. Seismic Preconditioning below Lift 1 Mine and its Influence on the Cavability of Lift 2 Cave -- 11. Palabora Lift 2 Mine Seismic System -- 12. Seismic Hazard Monitoring for Lift 2 -- Appendices -- Index
    Description / Table of Contents: This book offers an in-depth analysis and interpretation methods applicable to mine-induced seismicity. It is based on over 40 years of experience in mine and exploration geophysics. Another unique feature of this book is the complete history of the caving process as evidenced by the recorded seismicity at the South African copper mine Palabora Lift 1. Until now, the literature has only presented theory and case studies discussing the interpretation of results, and there has been no discussion of the input-data quality or why a certain interpretation technique was applied. This book fills that gap. This book is a fascinating read, written by one of the world’s leading mine seismologists. It summarises the history and progression of mine seismology. It outlines the practical use of back analysis of data and how it can be used on a daily basis. The book explains how mine seismology can be used as an effective monitoring tool for key events as the mine progresses as well as for future caving operations. Anthony Allman MAusIMM, CP(Min), RPEQ Antcia Consulting Pty Ltd, Director, Mining Engineer The content of the book is really solid and robust and I have no doubt it is going to be considered a great contribution for the mining community. Raul Fuentes, Former Director of Master Program in Geomechanics Applied to Mining, Universidad de los Andes, Santiago, Chile This book is long overdue and helps to present some difficult concepts in a way that they can be clearly understood by non-experts in this area. Stefan has personally managed to take mine seismology from being a black-art into a useful tool to help make mines a safer and more controlled environment. Neil Hepworth C. Eng, MIMMM, Geomin Consultorio - Brazil, Consultant Mining and Geotechnics Seismic monitoring is an important tool in cave management. The information from monitoring allows a number of key production factors to be determined including cave advance rates, the approximate location of the cave back, insight into the size of the air gap and allows the tracking of broad changes in stress. These all assist in the day to day management of a safe and successful cave. Dr. Glazer’s book provides guidance on the application of microseismicity to cave management through a review of appropriate theory and more importantly illustrates its use through case histories, particularly from the Palabora block cave. The text will be a good addition for all practitioners in cave engineering and operations. All ...
    Type of Medium: Monograph available for loan
    Pages: XV, 414 S.
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319326115
    Classification:
    Seismology
    Language: English
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  • 26
    Call number: PIK M 039-17-90409
    Description / Table of Contents: This book considers a relatively new metric in complex systems, transfer entropy, derived from a series of measurements, usually a time series. After a qualitative introduction and a chapter that explains the key ideas from statistics required to understand the text, the authors then present information theory and transfer entropy in depth. A key feature of the approach is the authors' work to show the relationship between information flow and complexity. The later chapters demonstrate information transfer in canonical systems, and applications, for example in neuroscience and in finance. The book will be of value to advanced undergraduate and graduate students and researchers in the areas of computer science, neuroscience, physics, and engineering
    Type of Medium: Monograph available for loan
    Pages: XXIX, 190 Seiten , Illustrationen, Diagramme
    ISBN: 9783319432212 (print)
    Language: English
    Note: Introduction -- Statistical Preliminaries -- Information Theory -- Transfer Entropy -- Information Transfer in Canonical Systems -- Information Transfer in Financial Markets -- Miscellaneous Applications of Transfer Entropy -- Concluding Remarks
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  • 27
    Call number: 8/M 17.90854
    In: Geotechnical, geological and earthquake engineering ; 42
    Description / Table of Contents: 1 Introduction -- 2 General Concepts and PSHA Background -- 3 Seismic Source Characterization -- 4 Rock Motion Characterization -- 5 Site Response Characterization -- 6 Seismic Hazard Computation -- 7 Interfaces Between Sub Projects -- 8 Probabilistic Seismic Testing and Updating of Seismic Hazard Results -- 9 Summary and Way Forward -- 10 References -- 11 Annex 1: List of Committee Members -- 12 Annex 2: List of Publications
    Description / Table of Contents: This book presents a summary of the important outcomes of the SIGMA project related to all aspects of Probabilistic Seismic Hazard Assessment: source characterization, rock motion characterization, site response characterization, and hazard calculations, with for all of them emphasis on the treatment of uncertainties. In recent years, attempts have been made to identify and quantify uncertainties in seismic hazard estimations for regions with moderate seismicity. These uncertainties, for which no estimation standards exist, create major difficulties and can lead to different interpretations and divergent opinions among experts. To address this matter, an international research project was launched in January 2011, by an industrial consortium composed of French and Italian organizations. This program, named SIGMA (Seismic Ground Motion Assessment) lasted for five years and involved a large number of international institutions. This book is intended for instructors running courses on engineering seismology, graduate students in the same field and practicing engineers involved in Probabilistic Seismic Hazard Analyses
    Type of Medium: Monograph available for loan
    Pages: XI, 172 Seiten , farbige Illustrationen
    ISBN: 9783319581545 , 9783319581538 (print)
    Series Statement: Geotechnical, Geological and Earthquake Engineering 42
    Language: English
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  • 28
    Call number: 6/M 17.90633
    In: International Association of Geodesy Symposia, 144
    Description / Table of Contents: Part 1 - Gravimetry and gravity networks -- Quality assessment of the new gravity control in Poland - first estimate -- Estimability in Strapdown Airborne Vector Gravimetr -- A First Traceable Gravimetric Calibration Line in the Swiss Alps -- Airborne gravimetry for geoid and GOCE -- Testing airborne gravity data in the large-scale area of Italy and adjacent seas -- The effect of helium emissions by a superconducting gravimeter on the rubidium frequency standards of absolute gravimeters -- Part 2 - Global geopotential models and vertical datum unification -- Wavelet multi-resolution analysis of recent GOCE/GRACE GGMs -- Evaluation of GOCE-based Global Geopotential Models Versus EGM2008 and GPS/Levelling Data in Northwest of Turkey -- Precise modelling of the static gravity field from the GOCE data using the method of fundamental solutions -- Towards a Vertical Reference Frame for South America in view of the GGOS specifications Andrea Galudht Santacruz Jaramillo, Sílvio Rogério Correia De Freitas, Laura Sánchez -- Ellipsoidal effects in high accuracy quasigeoid computations: verification of the apparatus Otakar Nesvadba, Petr Holota -- Evaluation of GOCE/GRACE GGMs over Attica and Thessaloniki, Greece, and Wo determination for height system unification -- The DTU13 MSS (Mean Sea Surface) and MDT (Mean Dynamic Topography) from 20 years of satellite altimetry -- Part 3 - Local geoid/gravity modeling -- A new gravimetric geoid model for the area of Sudan using the least squares collocation and a GOCE-based GGM -- Establishment of the Gravity Database AFRGDB V1.0 for the African Geoid -- Quasi-geoid model in the State of São Paulo -- Accurate Approximation of Vertical Gravity Gradient within the Earth’s External Gravity Field -- New geoid of Greenland, A case study of terrain and ice effects, GOCE and use of local sea level data -- Egyptian Geoid using Best Estimated Response of the Earth's Crust due to Topographic Loads -- Part 4 - Mass movements in the Earth system -- An investigation on the closure of the water budget methods over Volta Basin using multi-satellite data -- Application of Independent Component Analysis in GRACE- derived Water Storage Changes Interpretation, A case study of the Tibetan Plateau and its surrounding areas -- Mass variations in the Siberian permafrost region based on new GRACE results and auxiliary modeling -- Part 5 - Solid Earth Investigations -- Comparative study of the uniform and variable Moho density contrast in the Vening Meinesz-Moritz’s isostatic scheme for the gravimetric Moho recovery -- The New Method To Find The Anomalous Internal Structure Of Terrestrial Planets And Its Test On The Earth
    Description / Table of Contents: This volume contains the proceedings of 24 peer-reviewed papers presented at the 3rd International Gravity Field Service (IGFS) General Assembly, which was organized by the International Gravity Field Service (IGFS), Commission 2 of the International Association of Geodesy (IAG), and Shanghai Astronomical Observatory (SHAO), Chinese Academy of Sciences. The Assembly was successfully held in Shanghai, China from June 30th to July 6th, 2014 with over 130 participants from 25 countries. The focus of the Assembly is on methods for observing, estimating and interpreting the Earth gravity field as well as its applications, including 6 sessions: gravimetry and gravity networks, global geopotential models and vertical datum unification, local geoid/gravity modelling, satellite gravimetry, mass movements in the Earth system and solid Earth investigations
    Type of Medium: Monograph available for loan
    Pages: VIII, 224 Seiten , Illustrationen, Karten
    Edition: 1st ed. 2016
    ISBN: 9783319398198 (print) , 9783319398204
    Series Statement: International Association of Geodesy Symposia 144
    Classification:
    Gravimetry
    Language: English
    Location: Reading room
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  • 29
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: IASS 17.91074
    Description / Table of Contents: Chapter 1. An Outline Map of Anticipation -- Chapter 2. Understanding the Future -- Chapter 3 Wholes -- Chapter 4 Time -- Chapter 5. Emergence -- Chapter 6. Systems -- Chapter 7. Complexity -- Chapter  8. The Modeling Relation -- Chapter 9. The Discipline of Anticipation
    Description / Table of Contents: This book presents the theory of anticipation, and establishes anticipation of the future as a legitimate topic of research. It examines anticipatory behavior, i.e. a behavior that ‘uses’ the future in its actual decisional process. The book shows that anticipation violates neither the ontological order of time nor causation. It explores the question of how different kinds of systems anticipate, and examines the risks and uses of such anticipatory practices.   The book first summarizes the research on anticipation conducted within a range of different disciplines, and describes the connection between the anticipatory point of view and futures studies. Following that, its chapters on Wholes, Time and Emergence, make explicit the ontological framework within which anticipation finds its place. It then goes on to discuss Systems, Complexity, and the Modeling Relation, and provides the scientific background supporting anticipation. It restricts formal technicalities to one chapter, and presents those technicalities twice, in formal and plain words to advance understanding. The final chapter shows that all the threads presented in the previous chapters naturally converge toward what has come to be called “Discipline of Anticipation”
    Type of Medium: Monograph available for loan
    Pages: X, 275 Seiten , Illustrationen
    ISBN: 9783319630212 (print) , 9783319630236 (eBook)
    Series Statement: Anticipation Science 1
    Language: English
    Branch Library: RIFS Library
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  • 30
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: IASS 18.91692
    Type of Medium: Monograph available for loan
    Pages: xvi, 379 Seiten , Illustrationen , 23.5 cm x 15.5 cm
    ISBN: 3319769944 , 9783319769943 , 9783319769950 (electronic)
    Series Statement: Pioneers in arts, humanities, science, engineering, practice 16
    Language: English
    Branch Library: RIFS Library
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  • 31
    Call number: PIK E 719-18-91757
    Type of Medium: Monograph available for loan
    Pages: VI, 361 Seiten , Illustrationen, Diagramme
    ISBN: 9783319773315 , 9783319773322
    Series Statement: Computational Social Sciences
    Language: English
    Note: Contents: Part 1: Introduction to Spreading in Social Systems ; Complex Contagions: A Decade in Review ; A Simple Person’s Approach to Understanding the Contagion Condition for Spreading Processes on Generalized Random Networks ; Challenges to Estimating Contagion Effects from Observational Data ; Part 2: Models and Theories ; Slightly Generalized Contagion: Unifying Simple Models of Biological and Social Spreading ; Message-Passing Methods for Complex Contagions ; Optimal Modularity in Complex Contagion ; Probing Empirical Contact Networks by Simulation of Spreading Dynamics ; Theories for Influencer Identification in Complex Networks ; Part 3: Observational Studies ; Service Adoption Spreading in Online Social Networks ; Misinformation Spreading on Facebook ; Scalable Detection of Viral Memes from Diffusion Patterns ; Attention on Weak Ties in Social and Communication Networks ; Measuring Social Spam and the Effect of Bots on Information Diffusion in Social Media ; Network Happiness: How Online Social Interactions Relate to Our Well Being ; Information Spreading During Emergencies and Anomalous Events ; Part 4: Controlled Studies ; Randomized Experiments to Detect and Estimate Social Influence in Networks ; The Rippling Effect of Social Influence via Phone Communication Network ; Network Experiments Through Academic-Industry Collaboration ; Spreading in Social Systems: Reflections
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  • 32
    Call number: M 18.92012
    In: Data assimilation for atmospheric, oceanic and hydrologic applications
    Description / Table of Contents: This book contains the most recent progress in data assimilation in meteorology, oceanography and hydrology including land surface. It spans both theoretical and applicative aspects with various methodologies such as variational, Kalman filter, ensemble, Monte Carlo and artificial intelligence methods. Besides data assimilation, other important topics are also covered including targeting observation, sensitivity analysis, and parameter estimation. The book will be useful to individual researchers as well as graduate students for a reference in the field of data assimilation.
    Type of Medium: Monograph available for loan
    Pages: xxxvi, 553 Seiten , Illustrationen
    Edition: 1. Auflage
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 978-3-319-43414-8
    Series Statement: Data assimilation for atmospheric, oceanic and hydrologic applications Vol. III
    Language: English
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  • 33
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: M 18.91552
    Type of Medium: Monograph available for loan
    Edition: 8th edition
    ISBN: 978-3-319-78526-4
    Series Statement: Springer Textbooks in Earth Sciences, Geography and Environment
    Classification:
    Geochemistry
    Language: English
    Location: Upper compact magazine
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  • 34
    Monograph available for loan
    Monograph available for loan
    Cham : Springer International Publishing
    Call number: PIK B 150-18-91578
    Type of Medium: Monograph available for loan
    Pages: XXI, 198 Seiten , Diagramme
    ISBN: 9783319240626 (print)
    Series Statement: Contributions to Economics
    Language: English
    Note: Contents: Foreword -- Acknowledgments -- Contents -- List of Figures -- List of Tables -- List of Abbreviations -- List of Symbols -- Scalars -- Functions -- Indices -- Vectors, Matrices, Etc. -- Symbols Related to Poverty and Inequality -- 1 Introduction -- 1.1 Objective and Research Question -- 1.2 Structure of Thesis -- References -- 2 The Normative Argument for an Unconditional Basic Income -- 2.1 Van Parijs' Concept of Freedom -- 2.1.1 Alternative Concepts of Freedom -- 2.1.2 The Concept of Real Freedom -- 2.2 From Real Freedom to Basic Income -- 2.2.1 The Resource Egalitarianism Approach -- 2.2.2 Ambition-Sensitivity and Endowment-Insensitivity -- 2.2.3 The Value of the Basic Income -- 2.3 The Concept of the Basic Income in Detail -- 2.4 Common Objections Against an Unconditional BasicIncome -- 2.4.1 Exploitation and Reciprocity -- 2.4.2 Measuring of Real Freedom -- 2.5 Concluding Remarks -- References -- 3 Implementation of a Basic Income by a Negative Income Tax -- 3.1 The Concept of a Negative Income Tax -- 3.1.1 Definition and Classification -- 3.1.2 Economic Aspects -- 3.1.3 Comparison of an Unconditional Basic Income with a Negative Income Tax -- 3.2 Different Types of Negative Income Tax Plans -- 3.2.1 Minimum Income Guarantee -- 3.2.2 Social-Dividend Type -- 3.2.3 Poverty-Gap Type -- 3.2.4 Comparison of NIT-Types -- 3.3 Empirical Studies on Negative Income Tax Plans -- References -- 4 A Negative Income Tax Proposal for Germany -- 4.1 The Subsistence Level as Lower Limit of Welfare Payments in Germany -- 4.2 The Negative Income Tax Proposal in Detail -- 4.2.1 General Concept -- 4.2.2 The Build-In Option in Detail -- 4.2.3 Child Support -- 4.3 Comparison with Germany's Status Quo of 2010 -- 4.4 Critical Remarks -- References -- 5 Modeling Political Reforms: The Discrete Approach to Labor Supply -- 5.1 Economic Simulations ; 5.1.1 General Overview -- 5.1.2 Micro Simulations in Detail -- 5.1.3 Construction of a New Tax-and-TransferMicro Simulation -- 5.2 The Discrete Approach to Labor Supply -- 5.2.1 The Discrete Framework -- 5.2.2 Additive Random Utility -- 5.2.3 Specification of the Utility Function -- 5.2.4 Behavioral Changes -- References -- 6 Implications on the Proposed Basic Income Reform -- 6.1 Data -- 6.1.1 General Information on the GSOEP -- 6.1.2 Imputation and Non-responses -- 6.1.3 The Household Concept of the GSOEP -- 6.1.4 Income and Working Hours Distributions -- 6.2 Sample Selection Estimations for Expected Wage Rates -- 6.3 Calibration of the Multinomial Logit Regression Model -- 6.3.1 Estimation Results -- 6.3.2 Modeling the Status Quo -- 6.4 Allocation Effects of the Basic Income Schemeand its Feasibility -- 6.4.1 Expected Changes in Household Labor Supply -- 6.4.2 Feasibility of the Proposed Tax-and-TransferScheme -- 6.5 Distributional Effects of the Basic Income Scheme -- 6.5.1 Estimated Changes in Poverty -- 6.5.2 Implications on Income Inequality -- 6.6 Critical Remarks -- References -- 7 Conclusion and Outlook -- A Efficient Wage Hypothesis -- References -- B Social Insurance Contributions in Germany -- C Calculations -- C.1 Multinomial Logit Estimation -- C.2 Translog Utility -- C.2.1 Married Couples -- C.2.2 One-Adult Households -- C.3 Constant Relative Inequality Aversion -- Reference -- D Descriptive Statistics -- E Social Security Parameters of 2010 (Germany) -- F GSOEP Questions
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  • 35
    Publication Date: 2021-03-29
    Description: In order to better understand the role of fluids during subduction and subsequent exhumation, we have investigated whole-rock and mineral chemistry (major and trace elements) and Li, B as well as O, Sr, Nd, Pb isotopes on selected continuous drill-core profiles through contrasting lithological boundaries from the Chinese Continental Scientific Drilling Program (CCSD) in Sulu, China. Four carefully selected sample sets have been chosen to investigate geochemical changes as a result of fluid mobilization during dehydration, peak metamorphism, and exhumation of deeply subducted continental crust. Our data reveal that while O and Sr-Nd-Pb isotopic compositions remain more or less unchanged, significant Li and/or B isotope fractionations occur between different lithologies that are in close contact during various metamorphic stages. Samples that are supposed to represent prograde dehydration as indicated by veins formed at high pressures (HP) are characterized by element patterns of highly fluid-mobile elements in the veins that are complementary to those of the host eclogite. A second sample set represents a UHP metamorphic crustal eclogite that is separated from a garnet peridotite by a thin transitional interface. Garnet peridotite and eclogite are characterized by a 〉10% difference in MgO, which, together with the presence of abundant hydroxyl-bearing minerals and compositionally different clinopyroxene grains demonstrate that both rocks have been derived from different sources that have been tectonically juxtaposed during subduction, and that hydrous silicate-rich fluids have been added from the subducting slab to the mantle. Two additional sample sets, comprising retrograde amphibolite and relatively fresh eclogite, demonstrate that besides external fluids, internal fluids can be responsible for the formation of amphibolite. Li and B concentrations and isotopic compositions point to losses and isotopic fractionation during progressive dehydration. On the other hand, fluids with isotopically heavier Li and B are added during retrogression. On a small scale, mantle-derived rocks may be significantly metasomatized by fluids derived from the subducted slab. Our study indicates that during high-grade metamorphism, Li and B may show different patterns of enrichment and of isotopic fractionation.
    Keywords: Fluid/rock interaction; Elemental transfer; Isotopic fractionation; Subduction and exhumation; Sulu ; 551 ; Earth Sciences; Mineralogy; Mineral Resources; Geology
    Language: English
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  • 36
    Publication Date: 2021-03-29
    Description: The Itajaí Basin located in the southern border of the Luís Alves Microplate is considered as a peripheral foreland basin related to the Dom Feliciano Belt. It presents an excellent record of the Ediacaran period, and its upper parts display the best Brazilian example of Precambrian turbiditic deposits. The basal succession of Itajaí Group is represented by sandstones and conglomerates (Baú Formation) deposited in alluvial and deltaic-fan systems. The marine upper sequences correspond to the Ribeirão Carvalho (channelized and non-channelized proximal silty-argillaceous rhythmic turbidites), Ribeirão Neisse (arkosic sandstones and siltites), and Ribeirão do Bode (distal silty turbidites) formations. The Apiúna Formation felsic volcanic rocks crosscut the sedimentary succession. The Cambrian Subida leucosyenogranite represents the last felsic magmatic activity to affect the Itajaí Basin. The Brusque Group and the Florianópolis Batholith are proposed as source areas for the sediments of the upper sequence. For the lower continental units the source areas are the Santa Catarina, São Miguel and Camboriú complexes. The lack of any oceanic crust in the Itajaí Basin suggests that the marine units were deposited in a restricted, internal sea. The sedimentation started around 600 Ma and ended before 560 Ma as indicated by the emplacement of rhyolitic domes. The Itajaí Basin is temporally and tectonically correlated with the Camaquã Basin in Rio Grande do Sul and the Arroyo del Soldado/Piriápolis Basin in Uruguay. It also has several tectono-sedimentary characteristics in common with the African-equivalent Nama Basin.
    Keywords: Dom Feliciano Belt; Ediacaran; Foreland basin; U–Pb SHRIMP ages; Provenance ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 37
    Publication Date: 2021-03-29
    Description: Most studies dealing with material properties of sandstones are based on a small data set. The present study utilizes petrographical and petrophysical data from 22 selected sandstones and ~300 sandstones from the literature to estimate/predict the material and weathering behaviour of characteristic sandstones. Composition and fabric properties were determined from detailed thin section analyses. Statistical methods applied consist of data distributions with whisker plots and linear regression with confidence regions for the petrophysical and weathering properties. To identify similarities between individual sandstones and to define groups of specific sandstone types, principal component and cluster analyses were applied. The results confirm an interaction between the composition, depositional environment, stratigraphic association and diagenesis, which leads to a particular material behaviour of sandstones. Three different types of pore radii distributions are observed, whereby each is derived from different pore space modifications during diagenesis and is associated with specific sandstone types: (1) bimodal with a maximum in capillary and micropores, (2) unimodal unequal with a maximum in smaller capillary pores and (3) unimodal equable with a maximum in larger capillary pores. Each distribution shows specific dependencies to water absorption, salt loading and hygric dilatation. The strength–porosity relationship shows dependence on the content of unstable lithic fragments, grain contact and type of pore radii distribution, cementation and degree of alteration. Sandstones showing a maximum of capillary pores and micropores (bimodal) exhibit a distinct hygric dilatation and low salt resistance. These sandstones are highly immature sublitharenites–litharenites, characterized by altered unstable rock fragments, which show pointed-elongated grain contacts, and some pseudomatrix. Quartz arenites and sublitharenites–litharenites which are strongly compacted and cemented, show unimodal unequal pore radii distributions, low porosity, high strength and a high salt resistance. The presence of swellable clay minerals in sublitharenites–litharenites leads to a medium to high hygric dilatation, whereas quartz arenites show little hygric dilatation. Sandstones with unimodal equal pore radii distribution mostly belong to weakly compacted and cemented mature quartz arenites. These are characterized by high water absorption and high porosity, low to medium strength and a low salt resistance. The data compiled in this study are used to create a sandstone quality catalogue. Since material properties are dependent on many different parameters of influence, the transition between different lithotypes is fluent.
    Keywords: Sandstones; Pore space; Prediction; Weathering behavior; Compressive strength ; 551 ; Earth Sciences; Geology
    Language: English
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  • 38
    Publication Date: 2021-03-29
    Description: The lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the diffractometer SKAT in Dubna, Russia. The results demonstrate that the method is suitable for the LPO analysis of polyphase, relatively coarse-grained (0.1–6 mm) rocks. The Meissen monzonite has a prominent shape-preferred orientation (SPO) of the non-equidimensional minerals feldspar, mica and amphibole, whereas SPO of the Podlesí granite is unapparent at the hand-specimen scale. The neutron diffraction data revealed distinct LPOs in both granitoids. The LPO of the non-equidimensional minerals feldspar, mica and amphibole developed mainly during magmatic flow. In the case of the Meissen monzonite, the magmatic flow was superimposed by regional shear tectonics, which, however, had no significant effect on the LPOs. In both samples, quartz shows a weak but distinct LPO, which is atypical for plastic deformation and different in the syn-kinematic Meissen monzonite and the post-kinematic Podlesí granite. We suggest that, first of all, the quartz LPO of the Meissen monzonite is the result of oriented growth in an anisotropic stress field. The quartz LPO of the Podlesí granite, which more or less resembles a deformational LPO in the flattening field of the local strain field, developed during magmatic flow, whereby the rhombohedral faces of the quartz crystals adhered to the (010) faces of aligned albite and to the (001) faces of zinnwaldite. Due to shape anisotropy of their attachments, the quartz crystals were passively aligned by magmatic flow. Thus, magmatic flow and oriented crystal growth are the major LPO-forming processes in both granitoids. For the Meissen monzonite, the solid-state flow was too weak to cause significant crystallographic re-orientation of the minerals aligned by magmatic flow. Finally, the significance of our results for the evaluation of the regional tectonic environment during magma emplacement is discussed. The discussion on the regional implications of the more methodologically oriented results provides the basis for future, more regionally aimed studies in view of the fabric characteristics of such plutons and their developing mechanisms.
    Keywords: Neutron diffraction; Lattice-preferred orientation; Shape-preferred orientation; Magmatic flow; Podlesí granite; Meissen Massif ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 39
    Publication Date: 2021-03-29
    Description: The Eastern Sierras Pampeanas were structured by three main events: the Ediacaran to early Cambrian (580–510 Ma) Pampean, the late Cambrian–Ordovician (500–440 Ma) Famatinian and the Devonian-Carboniferous (400–350 Ma) Achalian orogenies. Geochronological and Sm–Nd isotopic evidence combined with petrological and structural features allow to speculate for a major rift event (Ediacaran) dividing into two Mesoproterozoic major crustal blocks (source of the Grenvillian age peaks in the metaclastic rocks).This event would be coeval with the development of arc magmatism along the eastern margin of the eastern block. Closure of this eastern margin led to a Cambrian active margin (Sierra Norte arc) along the western margin of the eastern block in which magmatism reworked the same crustal block. Consumption of a ridge segment (input of OIB signature mafic magmas) which controlled granulite-facies metamorphism led to a final collision (Pampean orogeny) with the western Mesoprotrozoic block. Sm–Nd results for the metamorphic basement suggest that the TDM age interval of 1.8–1.7 Ga, which is associated with the less radiogenic values of εNd(540) (−6 to −8), can be considered as the mean average crustal composition for the Eastern Sierras Pampeanas. Increasing metamorphic grade in rocks with similar detrital sources and metamorphic ages like in the Sierras de Córdoba is associated with a younger TDM age and a more positive εNd(540) value. Pampean pre-540 Ma granitoids form two clusters, one with TDM ages between 2.0 and 1.75 Ga and another between 1.6 and 1.5 Ga. Pampean post-540 Ma granitoids exhibit more homogenous TDM ages ranging from 2.0 to 1.75 Ga. Ordovician re-activation of active margin along the western part of the block that collided in the Cambrian led to arc magmatism (Famatinian orogeny) and related ensialic back-arc basin in which high-grade metamorphism is related to mid-crustal felsic plutonism and mafic magmatism with significant contamination of continental crust. TDM values for the Ordovician Famatinian granitoids define a main interval of 1.8–1.6, except for the Ordovician TTG suites of the Sierras de Córdoba, which show younger TDM ages ranging from 1.3 to 1.0 Ga. In Devonian times (Achalian orogeny), a new subduction regime installed west of the Eastern Sierras Pampeanas. Devonian magmatism in the Sierras exhibit process of mixing/assimilation of depleted mantle signature melts and continental crust. Achalian magmatism exhibits more radiogenic εNd(540) values that range between 0.5 and −4 and TDM ages younger than 1.3 Ga. In pre-Devonian times, crustal reworking is dominant, whereas processes during Devonian times involved different geochemical and isotopic signatures that reflect a major input of juvenile magmatism.
    Keywords: Magmatism-metamorphism; Sm–Nd systematics; Tectonic evolution; Neoproterozoic-early Paleozoic orogenies; Eastern Sierras Pampeanas ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 40
    Publication Date: 2021-03-29
    Description: The expansion processes that develop in building stones upon changes of moisture content may be an important contributing factor for their deteriorations. Until recently, few data could be found in the literature concerning this parameter and weathering processes. Moreover, the processes that may be responsible for the moisture related expansion of natural building stones are not yet completely understood. To further elucidate this process, extensive mineralogical, petrophysical and fabric investigations were performed on eight German sandstones in order to obtain more information regarding the weathering process and its dependence on the rock fabric. The analysed sandstones show a wide range of pore size distributions and porosities. A positive correlation with the fabric and the pore space can be found for all studied petrophysical parameters. The intensity of the expansion and related swelling pressure cannot be attributed only to the swelling of clay minerals. The investigations suggest that the micropores and the resulting disjoining pressure during wet/dry cycles also play an important role. The results obtained suggest that the mechanism is related to the presence of liquid water within the porous material.
    Keywords: Sandstone weathering; Moisture expansion; Hygric and hydric wetting; Swelling clay minerals ; 551 ; Earth Sciences; Geology
    Language: English
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  • 41
    facet.materialart.
    Unknown
    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: The profitable production of dimension stone mainly depends on the extractable block size. The regularity and volume of the blocks are of critical importance, and are controlled by the three-dimensional pattern of the discontinuity system. Therefore, optimization of block size has to be the aim when quarrying for natural stone. This is mainly connected to the quantification of joints and fractures, i.e., their spacing and orientation. The problem of finding unfractured blocks within arbitrarily oriented and distributed planes can be solved effectively by a numerical algorithm. The main effects of joint orientations on block sizes and shapes will be presented in this article. Quantification of unfractured blocks with the aim of optimization is illustrated by detailed studies on several quarries. The algorithm used in this study can be applied as a powerful tool in the planning of a quarry and the future exploitation of dimension stone. Application of the described approach is demonstrated on practical examples of quarrying natural stones, namely, sandstone, granite, rhyolite, etc. Block quarrying can be optimized by using the new 3D-BlockExpert approach. The quantification of unfractured rock masses is also shown to contribute to a more ecological protection and the sustainable use of natural resources.
    Keywords: Production of dimension stones; Joints and fractures; Block sizes; Optimization ; 551 ; Earth Sciences; Geology
    Language: English
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  • 42
    Publication Date: 2021-03-29
    Description: Damages to natural building stones induced by the action of frost are considered to be of great importance. Commonly, the frost resistance of building stones is checked by standardised freeze–thaw tests before using. Corresponding tests normally involve 30–50 freeze–thaw action cycles. In order to verify the significance of such measurements, we performed long-term tests on four selected rocks over 1,400 freeze–thaw action cycles. Additionally, numerous petrophysical parameters were analysed to compare the behaviour of rocks in the weathering tests according to the current explanatory models of stress formation by growing ice crystals in the pore space. The long-term tests yield more information about the real frost sensibility of the rocks. A clear deterioration cannot be determined in most cases until 50 weathering cycles have been completed. In the freeze–thaw tests, the samples are also stressed by changing temperature and moisture, indicating that different decay mechanisms can interfere with each other. Thus, thermohygric and moisture expansion are important damage processes.
    Keywords: Freeze–thaw action; Natural building stones; Microfabric; Pore space properties ; 551 ; Earth Sciences; Geology
    Language: English
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  • 43
    Publication Date: 2021-03-29
    Description: Owing to its long building history, different types of building stones comprised the construction of the Cologne Cathedral. Severe damage is observed on the different stones, e.g., sandstones, carbonate, and volcanic rocks, especially when the different stone materials neighbor the medieval “Drachenfels trachyte” from the “Siebengebirge”. The question arises, “Is the insufficient compatibility of the implemented building materials causatively related to the strong decay of the Drachenfels trachyte?” The present investigations focus on the petrography and mineralogical composition of eight different stones from the Cologne Cathedral. Petrophysical data, i.e., phase content, moisture and thermal characteristics as well as strength properties are determined and discussed in correlation to each other, showing that not only in terms of lithology great differences exist, but also the petrophysical properties strongly diverge. The ascertained parameters are discussed in view of the deterioration behavior and decay mechanisms of the different stones. To evaluate the compatibility of original, replacement and modern building materials, the properties of the investigated stones are compared to those of Drachenfels trachyte by means of constraints given in the literature. Besides optical properties, petrophysical criteria are also defined as well as strength values. It could be shown that primarily moisture properties, i.e., capillary and sorptive water uptake, water saturation, drying processes and moisture dilatation can be addressed to the deterioration processes.
    Keywords: Stone decay; Cologne Cathedral; Compatibility of building materials; Requirements for replacement stones ; 551 ; Earth Sciences; Geology
    Language: English
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  • 44
    Publication Date: 2021-04-27
    Description: The range of substrates that the bone-eating marine worm Osedax is able to consume has important implications for its evolutionary history, especially its potential link to the rise of whales. Once considered a whale specialist, recent work indicates that Osedax consumes a wide range of vertebrate remains, including whale soft tissue and the bones of mammals, birds and fishes. Traces resembling those produced by living Osedax have now been recognized for the first time in Oligocene whale teeth and fish bones from deep-water strata of the Makah, Pysht and Lincoln Creek formations in western Washington State, USA. The specimens were acid etched from concretions, and details of the borehole morphology were investigated using micro-computed tomography. Together with previously published Osedax traces from this area, our results show that by Oligocene time Osedax was able to colonize the same range of vertebrate remains that it consumes today and had a similar diversity of root morphologies. This supports the view that a generalist ability to exploit vertebrate bones may be an ancestral trait of Osedax.
    Keywords: Deep-sea; Trace fossil; Osedax; Whale; Fish; Micro-CT; Tiefsee; Spurenfossil; Osedax; Wal; Fisch; Micro-CT ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 45
    Publication Date: 2021-03-29
    Description: Forests in lowland Bolivia suffer from severe deforestation caused by different types of agents and land use activities. We identify three major proximate causes of deforestation. The largest share of deforestation is attributable to the expansion of mechanized agriculture, followed by cattle ranching and small-scale agriculture. We utilize a spatially explicit multinomial logit model to analyze the determinants of each of these proximate causes of deforestation between 1992 and 2004. We substantiate the quantitative insights with a qualitative analysis of historical processes that have shaped land use patterns in the Bolivian lowlands to date. Our results suggest that the expansion of mechanized agriculture occurs mainly in response to good access to export markets, fertile soil, and intermediate rainfall conditions. Increases in small-scale agriculture are mainly associated with a humid climate, fertile soil, and proximity to local markets. Forest conversion into pastures for cattle ranching occurs mostly irrespective of environmental determinants and can mainly be explained by access to local markets. Land use restrictions, such as protected areas, seem to prevent the expansion of mechanized agriculture but have little impact on the expansion of small-scale agriculture and cattle ranching. The analysis of future deforestation trends reveals possible hotspots of future expansion for each proximate cause and specifically highlights the possible opening of new frontiers for deforestation due to mechanized agriculture. Whereas the quantitative analysis effectively elucidates the spatial patterns of recent agricultural expansion, the interpretation of long-term historic drivers reveals that the timing and quantity of forest conversion are often triggered by political interventions and historical legacies.
    Keywords: Bolivia; Amazon; Deforestation; Proximate causes; Spatial analysis; Multinomial logistic regression ; 551 ; Environment; Geology; Geography (general); Regional/Spatial Science; Climate Change; Nature Conservation; Oceanography
    Language: English
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  • 46
    facet.materialart.
    Unknown
    Springer Berlin Heidelberg | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Characeae, a family of calcifying green algae, are common in carbonate-rich freshwaters. The southwestern shoreline of Lake Ganau (Kurdistan Region, northeastern Iraq) harbors dense and thick mats of these algae (genus Chara). On the lake bottom and along the shore, carbonate sands and rocks rich in the remains of stems, branches, nodes, and whorls of Chara are deposited. These deposits show all stages of growth and degradation of characean algae, including replacement and lithification into limestone. The replacement of the fragments by fine-grained calcite preserved delicate microstructures of Chara, such as cortical walls, cell shape, inner and outer layers of the stems, and reproductive organs. Based on roundness, sorting, the degree of lithification, and preserved microstructures of the grains (fragments), three facies were recognized. The first is represented by a newly formed lime sand facies showing elongated grains, poor sorting, and reduced roundness, with pristine preservation of characean surface microstructures. The second is a weathered lime sand facies, which shows better sorting and good roundness, whereas internal structures of characean fragments are still well preserved. The third is comprised of a lithified lime sand facies (grainstone), with very well sorted and rounded grains, and poorly preserved external and internal structures of the characeans. As compared to the newly formed lime sand facies, the grainstone facies shows an increase in grain size by more than 30 %, owing to precipitation of micritic lamina of possible microbial origin. Eventually, the Characeae-derived lime sands are lithified into oolitic limestones with sparry calcite cement, forming a grainstone microfacies. The present study has important implications for the interpretation of pre-Quaternary environments, as it records all stages of the fossilization process of characean green algae and highlights the role of these algae in the formation of oolitic carbonate rocks.
    Keywords: Characeae; Chara; Ooids; Green algae; Carbonate sand; Freshwater carbonates; Facies ; 551 ; Earth Sciences; Sedimentology; Biogeosciences; Geochemistry; Paleontology; Ecology
    Language: English
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  • 47
    Publication Date: 2021-03-29
    Description: The Mantiqueira Province represents a series of supracrustal segments of the South-American counterpart formed during the Gondwana Supercontinent agglutination. In this crustal domain, the process of escape tectonics played a conspicuous role, generating important NE–N–S-trending lineaments. The oblique component of the motions of the colliding tectonic blocks defined the transpressional character of the main suture zones: Lancinha-Itariri, Cubatão-Arcádia-Areal, Serrinha-Rio Palmital in the Ribeira Belt and Sierra Ballena-Major Gercino in the Dom Feliciano Belt. The process as a whole lasted for ca. 60 Ma, since the initial collision phase until the lateral escape phase predominantly marked by dextral and subordinate sinistral transpressional shear zones. In the Dom Feliciano Belt, southern Brazil and Uruguay, transpressional event at 630–600 Ma is recognized and in the Ribeira Belt, despite less coevally, the transpressional event occurred between 590 and 560 Ma in its northern-central portion and between ca. 625 and 595 Ma in its central-southern portion. The kinematics of several shear zones with simultaneous movement in opposite directions at their terminations is explained by the sinuosity of these lineaments in relation to a predominantly continuous westward compression.
    Keywords: Mantiqueira Province; Gondwana agglutination; Suture zones; Escape tectonics; Metamorphic-deformational events ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 48
    Publication Date: 2021-03-29
    Description: The Sierras Pampeanas in central and north-western Argentina constitute a distinct morphotectonic feature between 27°S and 33°S. The last stage of uplift and deformation in this area are interpreted to be closely related to the Andean flat-slab subduction of the Nazca plate beneath the South American plate. K–Ar fault gouge dating and low-temperature thermochronology along two transects within the Sierra de Comechingones reveal a minimum age for the onset of brittle deformation about 340 Ma, very low exhumation rates since Late Paleozoic time, as well as a total exhumation of about 2.3 km since the Late Cretaceous. New Ar–Ar ages (7.54–1.91 Ma) of volcanic rocks from the San Luis volcanic belt support the eastward propagation of the flat-slab magmatic front, confirming the onset of flat-slab related deformation in this region at 11.2 Ma. Although low-temperature thermochronology does not clearly constrain the signal of the Andean uplift, it is understood that the current structural relief related to the Comechingones range has been achieved after the exhumation of both fault walls (circa 80–70 Ma).
    Keywords: Sierras Pampeanas; K–Ar dating; Fault gouge dating; Low thermal geochronology; Andean uplift ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 49
    Publication Date: 2021-03-29
    Description: The Palaeogene was the most recent greenhouse period on Earth. Especially for the Late Palaeocene and Early Eocene, several superimposed short-term hyperthermal events have been described, including extremes such as the Palaeocene–Eocene Thermal Maximum. Major faunal and floral turnovers in the marine and terrestrial realms were recorded in association with these events. High-resolution palynological analysis of the early Middle Eocene maar lake sediments at Messel, near Darmstadt, Germany, provides an insight into the dynamics of a climax vegetation during the Middle Eocene greenhouse climate in a time span without significant climatic excursions. Numerical techniques like detrended correspondence analysis and wavelet analysis have been applied to recognize cyclic fluctuations and long-term trends in the vegetation through a time interval of approximately 640 kyr. Based on the numerical zoning of the pollen diagram, three phases in the development of the vegetation may be distinguished. Throughout these phases, the climax vegetation did not change substantially in qualitative composition, but a trend towards noticeably less humid conditions probably in combination with a drop of the water level in the lake may be recognized. A shift in algal population from the freshwater dinoflagellate cyst Messelodinium thielepfeifferae to a dominance of Botryococcus in the uppermost part of the core is interpreted as a response to changes in acidity and nutrient availability within the lake. Time series analyses of pollen assemblages show that variations in the Milankovitch range of eccentricity, obliquity and precession can be distinguished. In addition, fluctuations in the sub-Milankovitch range are indicated. This demonstrates that floral changes during steady depositional conditions in the Middle Eocene of Messel were controlled by orbital forcing.
    Keywords: Middle Eocene; Maar lake; Palynology; Climate variability; Milankovitch cycles; Multivariate statistics; Time series analysis ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 50
    Publication Date: 2021-03-29
    Description: In the presented case study, ascomycete fungi and green algae on a marble monument were identified by comparisons of the 18S rRNA gene sequences, which were obtained from DNA either from environmental samples or from enrichment cultures. The organisms were found to be responsible for either black or green surface coverings on different areas of the monument surface. Most fungi were related to plant-inhabiting genera, corresponding to a heavy soiling of the marble surface with honeydew. Whereas green algae of the genera Stichococcus, Chloroidium and Apatococcus were found to be dominant in all samples, isolates of two additional genera were recovered only from enrichment cultures. A reference strain of Apatococcus lobatus and an isolate of Prasiolopsis sp. were investigated with respect to putative surface adhesive structures of the cell envelope. The Prasiolopsis cell walls were covered with a thin adhesive exopolysaccharide layer involved in biofilm formation.
    Keywords: Marble monument; Biofilm; Ascomycete fungi; Green algae; Cell wall; Exopolysaccharide ; 551 ; Earth Sciences; Geology
    Language: English
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  • 51
    facet.materialart.
    Unknown
    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Bowing is a well-known phenomenon seen in marbles used as building veneers. This form of rock weathering occurs as a result of external factors such as temperature, humidity, the system for anchoring the marble slabs or the panel dimensions. Under the same external conditions, many factors will determine the degree of deformation including petrography, thermal properties and residual locked stresses. The usual way to solve the problem of bowed marble slabs is to replace them with other materials, such as granites, in which the deformation still exists but is less common. In this study, eight ornamental granites with different mineralogy, grain size, grain shape, porosity and fabric were tested in a laboratory to assess their susceptibility to bowing. Three slabs of granite, each cut with a different orientation, were studied under different conditions of temperature (90 and 120°C) and water saturation (dry and wet) to investigate the influence of these factors together with that of anisotropy. At 90°C, only the granite with the coarsest grain size and low porosity exhibited deformation under wet conditions. At 120°C and wet conditions, three of the granites showed evident signs of bowing. Again, the granite with the coarsest grain size was the most deformed. It was concluded that the wide grain size distribution influences microcracking more than other expected factors, such as the quartz content of the rock. Also, mineral shape-preferred orientation and porosity play an important role in the bowing of the studied granites.
    Keywords: Granitoids; Bowing; Texture; Thermal expansion ; 551 ; Earth Sciences; Geology
    Language: English
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  • 52
    Publication Date: 2021-03-29
    Description: The emplacement of the Mesoproterozoic Götemar Pluton into Paleoproterozoic granitoid host rocks of the Transscandinavian Igneous Belt is re-examined by microfabric analysis, including cathodoluminescence microscopy. Field data on the pluton-host rock system are used to strengthen the model. The Götemar Pluton, situated on the Baltic Shield of SE Sweden, is a horizontally zoned tabular structure that was constructed by the intrusion of successive pulses of magma with different crystal/melt ratios, at an estimated crustal depth of 4–8 km. Initial pluton formation involved magma ascent along a vertical dike, which was arrested at a mechanical discontinuity within the granitoid host rocks; this led to the formation of an initial sill. Subsequent sill stacking and their constant inflation resulted in deformation and reheating of existing magma bodies, which also raised the pluton roof. This multi-stage emplacement scenario is indicated by complex dike relationships and the occurrence of several generations of quartz (Si-metasomatism). The sills were charged by different domains of a heterogeneous magma chamber with varying crystal/melt ratios. Ascent or emplacement of magma with a high crystal/melt ratio is indicated by syn-magmatic deformation of phenocrysts. Complex crystallization fabrics (e.g. oscillatory growth zoning caused by high crystal defect density, overgrowth and replacement features, resorbed and corroded crystal cores, rapakivi structure) are mostly related to processes within the main chamber, that is repeated magma mixing or water influx.
    Keywords: Pluton emplacement; Microfabrics; Cathodoluminescence; Mesoproterozoic; Götemar; SE Sweden ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 53
    Publication Date: 2021-03-29
    Keywords: Provenance; Heavy minerals; Detrital zircon; U–Pb dating; Rhine River; Alps ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
    Language: English
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  • 54
    Publication Date: 2021-03-29
    Keywords: Landsat ETM+; Sea surface temperature; Submarine groundwater discharge; Groundwater resource ; 551 ; Earth Sciences; Geology
    Language: English
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  • 55
    Publication Date: 2021-03-29
    Description: Slates are internationally known as roof and façade-cladding material since prehistoric times. The methods required to mine and manufacture these dimensional stones are relatively simple in comparison to those utilized in granitic dimensional stones. This has led to a worldwide rentable commercialization of slate in the last centuries and also to the development of characteristic cultural landscapes. In Uruguay several slates are mined and used in architecture, especially as façade cladding and floor slabs. The most important slates regarding their production and utilization are the dolomitic slates. These dolomitic slates are associated with the Neoproterozoic thrust and fold belt of the Dom Feliciano belt. Representative samples have been geochemically and petrographically characterized, as well as petrophysically and petromechanically analyzed. The petrophysical and petromechanical properties were investigated in a very systematic way with respect to the new European standards, showing values comparable to those registered for internationally known slates. Detailed structural and deposit analysis were carried out in Uruguay in order to evaluate the dolomitic slate deposits. The slates are linked to calc-silicate strata in a greenschist facies volcano-sedimentary sequence and the deposits are located in the limb of a regional fold, where bedding and cleavage are parallel. The main lithotype is a layered and fine-grained dolomitic slate with a quite diverse palette of colors: light and dark green, gray, dark gray, reddish and black. The mined slate is split into slabs 0.5–2 cm thick. In the past, the average production in Uruguay was around 4,000 tons/year and a historical maximum of 13,000 tons was reached in 1993 (Oyhantçabal et al. in Z dt Ges Geowiss 158(3):417–428, 2007). The oscillations in the regional demand were the cause of several flourishing and decay cycles in the activity, but our investigation shows a considerable volume of indicated resources and therefore a very good potential.
    Keywords: Slates; Dimensional stones; Petrophysical properties; Petrography; Uruguay ; 551 ; Earth Sciences; Geology
    Language: English
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  • 56
    Publication Date: 2021-03-29
    Description: Microstructure‐based finite-element analysis with a microcracking algorithm was used to simulate an actual degradation phenomenon of marble structures, i.e., microcracking. Both microcrack initiation and crack propagation were characterized, as were their dependence on lattice preferred orientation (LPO), grain shape preferred orientation (SPO), grain size, marble composition (calcite and dolomite) and grain‐boundary fracture toughness. Two LPOs were analyzed: a random orientation distribution function and an orientation distribution function with strong directional crystalline texture generated from a March–Dollase distribution. Three SPOs were considered: equiaxed grains; elongated grains and a mixture of equiaxed and elongated grains. Three different grain sizes were considered: fine grains of order 200 μm (only calcitic marble); medium size grains of order 1 mm (calcitic and dolomitic marbles); and large grains of order 2 mm (only dolomitic marble). The fracture surface energy for the grain boundaries, γig, was chosen to be 20 and 40 % of the fracture surface energy of a grain, γxtal, so that both intergranular and transgranular fracture were possible. Studies were performed on these idealized marble microstructures to elucidate the range of microcracking responses. Simulations were performed for both heating and cooling by 50 °C in steps of 1 °C. Microcracking results were correlated with the thermoelastic responses, which are indicators related to degradation. The results indicate that certain combinations of LPO, SPO, grain size, grain‐boundary fracture toughness and marble composition have a significant influence on the thermal-elastic response of marble. Microstructure with the smallest grain size and the highest degree of SPO and LPO had less of a tendency to microcrack. Additionally, with increasing SPO and LPO microcracking becomes more spatially anisotropic. A significant observation for all microstructures was an asymmetry in microcracking upon heating and cooling: more microcracking was observed upon cooling than upon heating. Given an identical microstructure and crystallographic texture, calcite showed larger thermal stresses than dolomite, had an earlier onset of microcracking upon heating and cooling, and a greater microcracked area at a given temperature differential. Thermal expansion coefficients with and without microcracking were also determined.
    Keywords: Marble; Microcracking; Finite-element modeling; Lattice preferred orientation; Shape preferred orientation; Strain energy density; Maximum principal stress; Thermal expansion coefficient; Thermal expansion anisotropy ; 551 ; Earth Sciences; Geology
    Language: English
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  • 57
    Publication Date: 2021-03-29
    Description: In Uruguay commercial granite varieties comprise mafic rocks, granitoids, and syenitoids. There is a long tradition in Uruguay, as well as worldwide, of using dimensional stones in architecture and art, specially granitic ones. Some of the present applications of these dimensional stones are as façade cladding, countertops, and outdoor and indoor floor slabs. The color spectrum of the Uruguayan granitic dimensional stones varies from black to light gray, covering a wide variety of red and pink and minor greenish-gray. The décor of these granitic dimensional stones is mainly determined by their fabric, fundamentally the grain size and the color distribution between the different minerals that compose the rocks. In the present research the most important commercial granites were sampled to analyze their petrography and petrophysical properties. A detailed structural analysis has been performed in several deposits, as well as the application of the software 3D Block Expert for modeling the possible raw block size distribution. Other factors controlling the mining viability of the deposits were also studied (e.g., homogeneity/heterogeneity of color and décor) and the possible reserves were calculated.
    Keywords: Granitic dimensional stones; Petrophysical properties; Petrography; Deposit characterization; Uruguay ; 551 ; Earth Sciences; Geology
    Language: English
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  • 58
    Publication Date: 2021-03-29
    Description: The old mining city of Guanajuato in middle Mexico preserves one of the most important historical legacies in colonial buildings, the UNESCO declared the city World Heritage Site in 1988. Practically all the colonial constructions were built with natural stones from the neighbourhood, of which stands a greenish to reddish vulcanite, called Loseros Tuff. Although the Loseros Tuff is widely used in historical buildings in the city. It shows significant deterioration and weathering effects, principally in the parts where the tuff shows a coarse grain size. The petrographic, petrophysical, mineralogical and geochemical properties of the Loseros Tuff were analysed in order to determine the causes, effects, behaviour and response to deterioration of this volcanic rock. The results of the investigations suggest that in addition to the parameters like the grain size and the porosity properties, the pore radii distribution is decisive for the effectiveness of porosity and the water transport into the rock. It is recognized that once the liquid water invades the rock the dissolution of the matrix occurs, which is accompanied by a sudden moisture expansion favoured by the newly formed secondary porosity and the high content of expandable clay minerals.
    Keywords: Tuff; Moisture expansion; Porosity; Guanajuato ; 551 ; Earth Sciences; Geology
    Language: English
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  • 59
    Publication Date: 2021-03-29
    Description: The degree of weathering in natural stones on buildings and sculptures has been determined for many years in numerous cases by means of ultrasonic measurements. Conclusions concerning the strength of the rock and the type of weathering can thus be drawn. This relationship has not been established for all rock types. Most of the progress utilizing this method has been made in the analysis of marbles, where an increasing degree of weathering shows lower ultrasonic velocities. In the present study, four Carrara marble samples showing similar rock fabrics, but with respect to weathering exhibit considerable differences are investigated. Porosity varies between 0.2 vol. % and ca. 2.4 vol. %, whereby with increasing porosity the pore radii changes as well. Parallel to this the ultrasonic velocities change in dry samples from about 5.5 to 1.6 km/s, respectively. Model calculations reveal that the velocity reduction is caused by cracks with an extremely small aspect ratio of about 0.005 or even less. After a specific loss of strength, however, solution processes can become active, which modify the microcracks and generate an opposite trend. In the process a strong porosity increase correlates to a relatively small velocity reduction. With the presence of water the Vp porosity weathering relationship experiences a considerable modification. Parallel to the reduction of the ultrasonic velocities, it was determined that the mechanical strength (compressive strength, flexural strength, etc.) as well as the static Young’s modulus is reduced almost equally by a progressive advancement of the weathering front. In one case study dealing with tensile strengths, it was clearly documented how tensile cracks develop and propagate in dependence of the rock fabric. The rock mechanical and ultrasonic velocity data were used for stability assessments applied to the marble statuaries from the Schlossbrücke in Berlin. Stability assessments of the sculpture group 4 reveal that some critical parts must be replaced due to safety reasons.
    Keywords: Marble waethering; Mechanical properties; Ultrasonic wave velocites; Stability assessment; Cultural heritage ; 551 ; Earth Sciences; Geology
    Language: English
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  • 60
    Publication Date: 2021-03-29
    Description: Fabrics of Cambrian sedimentary dykes formed in Proterozoic granites of the Västervik area (Southeast Sweden) evidence repeated opening/filling and mineralisation/cementation events under varying conditions. Diagnostic features include (1) wall-parallel boundaries between epiclastic fillings and (2) early formed dyke sediments that appear as lithoclasts in subsequently formed sedimentary fillings. The psammitic components mostly consist of well-rounded quartz grains related to a coastal environment and fragments from the granitic host rock. Platy calcitic fragments embedded in the epiclastic matrix originally formed as microveins within already-lithified dyke sediments and the adjacent host rock. Convex downward-pointing, internal sagging structures, together with the preferred orientation of compositional boundaries and long axes of grains/rock fragments parallel to the dyke walls, are interpreted as the result of suction-controlled flow of unconsolidated fillings during episodes of downward dyke growth. Pressure solution of quartz grains are evidence of extensional phases with dyke propagation that were interrupted by phases of horizontal compression normal to the dyke walls. The N–S and NE–SW striking sedimentary dykes formed by opening of a pre-existing joint set during NW–SE oriented rifting during the Cambrian.
    Keywords: Sedimentary dykes; Proterozoic; Southeast Sweden; Microfabrics; Passive infill; Cambrian geodynamics ; 551 ; Earth Sciences; Geology; Geophysics/Geodesy
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  • 61
    Publication Date: 2021-03-29
    Description: Moisture expansion in natural building stones is considered one of the most important factors affecting their weathering and deterioration. The processes that may be responsible for the expansion under determinate relative humidity (hygric dilatation) and water-saturated conditions (hydric dilatation) are generally attributed to the presence of swellable clay minerals. In contrast to this assumption, our investigations show that moisture expansion also takes place in volcanic tuff building stones almost free from clay minerals. To provide a deeper understanding of the processes, swelling and deterioration were performed on 14 volcanic tuffs used as important building stones of different ages, compositions and weathering stages from Mexico, Germany and Hungary. The investigations undertaken include extensive chemical, petrophysical and fabric analyses. The samples show a wide range of effective porosity, microporosity, capillary water absorption, moisture expansion, and CEC values. High moisture expansion does not seem to depend on clay mineral content alone. We also observed that there is no significant effect on dilatation if clay minerals are present but only form a thin coat on the outer shell of bigger pores. Moreover, we identified a correlation between microporosity, average pore radius and moisture expansion. The investigations highlight the fact that moisture expansion cannot only be attributed to swellable clay minerals, and suggest that the presence and accumulation of micropores and their average radius and distribution play an important role for non-clay associated swelling intensity, which can most probably be attributed to the disjoining pressure.
    Keywords: Weathering of tuffs; Hygric expansion; Hydric expansion; Clay mineralogy; Microporosity; Disjoining pressure ; 551 ; Earth Sciences; Geology
    Language: English
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  • 62
    Publication Date: 2021-03-29
    Description: Investigation by Raman spectroscopy of samples from different geological settings shows that the occurrence of TiO2 polymorphs other than rutile can hardly be predicted, and furthermore, the occurrence of anatase is more widespread than previously thought. Metamorphic pressure and temperature, together with whole rock chemistry, control the occurrence of anatase, whereas variation of mineral assemblage characteristics and/or fluid occurrence or composition takes influence on anatase trace element characteristics and re-equilibration of relict rutiles. Evaluation of trace element contents obtained by electron microprobe in anatase, brookite, and rutile shows that these vary significantly between the three TiO2 phases. Therefore, on the one hand, an appropriation to source rock type according to Nb and Cr contents, but as well application of thermometry on the basis of Zr contents, would lead to erroneous results if no phase specification is done beforehand. For the elements Cr, V, Fe, and Nb, variation between the polymorphs is systematic and can be used for discrimination on the basis of a linear discriminant analysis. Using phase group means and coefficients of linear discriminants obtained from a compilation of analyses from samples with well-defined phase information together with prior probabilities of groupings from a natural sample compilation, one is able to calculate phase grouping probabilities of any TiO2 analysis containing at least the critical elements Cr, V, Fe, and Nb. An application of this calculation shows that for the appropriation to the phase rutile, a correct-classification rate of 99.5% is obtained. Hence, phase specification by trace elements proves to be a valuable tool besides Raman spectroscopy.
    Keywords: TiO2 polymorph discrimination; Phase classification; Anatase; Brookite; Rutile; Erzgebirge; Zr-in-rutile thermometry ; 551 ; Earth Sciences; Mineral Resources; Mineralogy; Geology
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  • 63
    Publication Date: 2021-03-29
    Description: A new U–Pb SHRIMP age of 551 ± 4 Ma on a mylonitic porphyry that intruded into the Sierra Ballena Shear Zone (Southernmost Dom Feliciano Belt, Uruguay) and a review of relevant published data make possible a more refined correlation and reconstruction of Brasiliano/Pan-African transpressional events. Paleogeographic reconstruction, kinematics and timing of events indicate a connection between the shear systems of the Dom Feliciano and Kaoko Belts at 580–550 Ma. Sinistral transpression recorded in shear zones accommodates deformation subsequent to collision between the Congo and Río de la Plata Cratons. The correlation is strengthened by the similarity of magmatic and metamorphic ages in the Coastal Terrane of the Kaoko Belt and the Punta del Este Terrane of the Dom Feliciano Belt. This post-collisional sinistral transpression brought these units near to their final position in Gondwana and explains the different evolution at 550–530 Ma. While in the Kaoko Belt, an extensional episode resulted in exhumation as a consequence of collision in the Damara Belt, in the Dom Feliciano Belt, sinistral transpression occurred associated with the closure of the southern Adamastor Ocean due to Kalahari-Río de la Plata collision.
    Keywords: Dom Feliciano Belt; Kaoko Belt; Brasiliano; Pan-African; Transpressional deformation; Shear Zones ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
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  • 64
    Publication Date: 2021-03-29
    Keywords: Eastern Sierras Pampeanas; Provenance; Tectonic setting; Gondwana margin; Geodynamic evolution ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 65
    Publication Date: 2021-03-29
    Description: This study documents the chemical and textural responses of zircon in the Elba igneous complex, with particular reference to the 7- to 7.8-Ma-old Monte Capanne pluton in relation to its coeval volcanic counterpart (Capraia), using BSE imaging and quantitative electron microprobe analyses. The Monte Capanne pluton displays multiple field and geochemical evidence for magma mixing. The samples we have investigated (including monzogranitic, mafic enclave and dyke samples) display similar zircon textures and are associated with an extremely large range of trace and minor element (Hf, Y, HREE, Th, U) compositions, which contrast with relatively simple textures and zoning patterns in zircons from a Capraia dacite. We have used a relatively simple textural classification (patchy zoning, homogenous cores, oscillatory zoning and unzoned zircon) as the basis for discussing the chemical composition and chemical variation within zircons from the Monte Capanne pluton. Based on these data and other works (Dini et al. 2004 in Lithos 78:101–118, 2004) , it is inferred that mixing between metaluminous and peraluminous melts occurred early in the evolution of the Monte Capanne magma chamber. In particular, mixing was responsible for the development of the patchy-zoning texture in the zircon cores, which was associated with reactions between other accessory phases (including monazite, apatite, allanite), which we infer to have significantly affected the Th distribution in zircon. Zircons from the MC pluton displaying “homogeneous cores” have chemical affinities with zircons in the coeval Capraia volcanic system, consistent with the participation of a Capraia-like mantle end-member during mixing. Further zircon growth in the MC pluton produced the oscillatory zoning texture, which records both long-term (crystal fractionation) and transient (recharge with both silicic and mafic magmas) events in a hybrid magma chamber. It is inferred that Hf and the Th/U ratio cannot be used alone to infer magmatic processes due to their dependency on temperature, nor are they a diagnostic feature of xenocrystic grains. This study shows that zircon chemistry coupled with detailed textural analysis can provide a powerful tool to elucidate the complex evolution of a magma system.
    Keywords: Granite petrology; Zircon; Elba; Capraia; Electron microprobe; Magma mixing ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
    Language: English
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  • 66
    Publication Date: 2021-03-29
    Description: The bowing of natural stone panels is especially known for marble slabs. The bowing of granite is mainly known from tombstones in subtropical humid climate. Field inspections in combination with laboratory investigations with respect to the thermal expansion and the bowing potential was performed on two different granitoids (Cezlak granodiorite and Flossenbürg granite) which differ in the composition and rock fabrics. In addition, to describe and explain the effect of bowing of granitoid facade panels, neutron time-of-flight diffraction was applied to determine residual macro- and microstrain. The measurements were combined with investigations of the crystallographic preferred orientation of quartz and biotite. Both samples show a significant bowing as a function of panel thickness and destination temperature. In comparison to marbles the effect of bowing is more pronounced in granitoids at temperatures of 120°C. The bowing as well as the thermal expansion of the Cezlak sample is also anisotropic with respect to the rock fabrics. A quantitative estimate was performed based on the observed textures. The effect of the locked-in stresses may also have a control on the bowing together with the thermal stresses related to the different volume expansion of the rock-forming minerals.
    Keywords: Granitoids; Bowing; Residual strain; Texture; Thermal expansion ; 551 ; Geosciences; Geology
    Language: English
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  • 67
    Publication Date: 2021-03-29
    Description: Multi-isotope study including whole-rock Nd–Sr, single zircon Hf, and SIMS δ18O analyses of zircons sheds light on magma sources in the northernmost Arabian–Nubian Shield (ANS) during ~820–570 Ma. Reconnaissance initial Nd and Sr isotope data for the older rocks (~820–740 Ma) reaffirms previous estimates that early crustal evolution in this part of the shield involved some crustal contamination by pre-ANS material. Prominent isotope provinciality is displayed by post-collisional calc-alkaline and alkaline igneous rocks of ~635–570 Ma across a NW-SE transect across basement of the Sinai Peninsula (Egypt) and southern Israel. Silicic rocks of the NW-region are characterized by lower εNd(T)–εHf(T) and higher Sri and δ18O compared with rocks of the SE-region, and the transition between the regions is gradual. Within each region isotope ratios are independent of the extent of magma fractionation, and zircon cores and rims yield similar δ18O values. Comparison with southern segments of the ANS shows that the source for most ~635–570 Ma rocks can be modeled as the isotopically aged lower-intermediate crust in the ANS core (SE-region) and its northern, more contaminated ANS margins (NW-region). Nevertheless, Nd–Sr isotope enrichment of the lithospheric mantle is indicated by some basic magmas of the NW-region displaying the most enriched Nd–Sr isotope compositions. Comparison of Nd and Hf depleted mantle model ages for rocks of the SE-region may indicate that crustal formation events in the ANS geographical core took place at 1.1–1.2 Ga and were followed by crustal differentiation starting at ~0.9 Ga.
    Keywords: Nd–Sr–Hf–O; Arabian–Nubian Shield; Magma-sources; Zircon ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
    Language: English
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  • 68
    Publication Date: 2021-03-29
    Description: Oligoclase and labradorite crystals have been experimentally replaced by albite in an aqueous sodium silicate solution at 600°C and 2 kbars. The replacement is pseudomorphic and is characterised by a sharp chemical interface which progresses through the feldspar while preserving the crystallographic orientation. Reaction rims of albite, up to 50 μm thick, can be readily achieved within 14 days. Re-equilibration of plagioclase in an 18O-enriched sodium- and silica-bearing solution results in oxygen isotope redistribution within the feldspar framework structure. The observed characteristics of the reaction products are similar to naturally albitised plagioclase and are indicative of an interface-coupled dissolution–reprecipitation mechanism. Chemical analyses demonstrate that the albitisation is accompanied by the mobilisation of major, minor and trace elements also including elements such as Al and Ti which are commonly regarded as immobile during hydrothermal alteration. The results contribute to developing our understanding of the close association between large-scale albitisation and secondary ore mineralisation which is common in nature.
    Keywords: Plagioclase albitisation; Fluid–mineral interaction; Interface-coupled dissolution–reprecipitation; Hydrothermal experiments; Element mobility ; 551 ; Earth Sciences; Mineralogy ; Mineral Resources ; Geology
    Language: English
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  • 69
    Publication Date: 2021-03-29
    Description: The Sierra de San Luis forms the southern tip of the Eastern Sierras Pampeanas in central Argentina. Two narrow belts of low-grade phyllites and quartz arenites, i.e. the San Luis Formation, have accommodated part of the strain-related differential exhumation of the medium- to high-grade metamorphic domains that constitute to the basement complex of the sierra. Eleven phyllite samples were subjected to the K/Ar fine-fraction dating technique. Results are interpreted in relation to the Kübler index of the illites, which indicate epimetamorphic conditions for the majority of the samples. Obtained ages between 330 and 290 Ma cover a period of compressional tectonics in the late Mississippian (Visean/Serpukhovian boundary) followed by the subsidence during the formation of the Paganzo Basin in the provinces of La Rioja and San Luis. These tectonic movements are coincident with the Toco orogeny in northern Chile and southern Bolivia. This suggests that the older K/Ar ages document the compressional stage and that younger ages record the cooling of the basement during the subsequent extensional uplift of the basement.
    Keywords: Eastern Sierras Pampeanas; San Luis Formation; Paganzo Basin; K/Ar; Illite fine fractions ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 70
    Publication Date: 2021-03-29
    Description: A review of the lithostratigraphic units in the Río de la Plata Craton and of new and previously published geochronological, isotopic and geophysical data is presented. Sm–Nd TDM model ages between 2.6 and 2.2 Ga characterize the Piedra Alta Terrane of this craton. Crystallization ages between 2.2 and 2.1 Ga for the metamorphic protoliths and 2.1–2.0 Ga for the post-orogenic granitoids indicate juvenile crust, followed by a short period of crustal recycling. Cratonization of this terrane occurred during the late Paleoproterozoic. Younger overprinting is not observed, suggesting it had a thick and strong lithosphere in the Neoproterozoic. A similar scenario is indicated for the Tandilia Belt of Argentina. Sm–Nd TDM model ages for the Nico Pérez Terrane show two main events of crustal growth (3.0–2.6 and 2.3–1.6 Ga). The crystallization ages on zircon ranges between 3.1 and 0.57 Ga, which is evidence for long-lived crustal reworking. The age for cratonization is still uncertain. In the Taquarembó Block, which is considered the prolongation of the Nico Pérez Terrane in southern Brazil, a similar scenario can be observed. These differences together with contrasting geophysical signatures support the redefinition of the Río de la Plata Craton comprising only the Piedra Alta Terrane and the Tandilia Belt. The Sarandí del Yí Shear Zone is regarded as the eastern margin of this Craton.
    Keywords: Precambrian; Transamazonian cycle; South American platform; Río de la Plata Craton ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 71
    Publication Date: 2021-03-29
    Keywords: Mud mound; Peloids; Automicrites; Micro-framework; Carboniferous; Spain ; 551 ; Earth Sciences; Ecology; Paleontology; Geochemistry ; Biogeosciences; Sedimentology
    Language: English
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  • 72
    Publication Date: 2021-03-29
    Keywords: Campi Flegrei; Phlegraean fields; Campanian Ignimbrite; Neapolitan Yellow Tuff; Geochemistry; Sr and Nd isotopes; Magma batches; Precursor activity ; 551 ; Geosciences; Sedimentology ; Mineralogy ; Geophysics/Geodesy ; Geology
    Language: English
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  • 73
    Publication Date: 2021-03-29
    Description: The volcaniclastic Tepoztlán Formation (TF) represents an important rock record to unravel the early evolution of the Transmexican Volcanic Belt (TMVB). Here, a depositional model together with a chronostratigraphy of this Formation is presented, based on detailed field observations together with new geochronological, paleomagnetic, and petrological data. The TF consists predominantly of deposits from pyroclastic density currents and extensive epiclastic products such as tuffaceous sandstones, conglomerates and breccias, originating from fluvial and mass flow processes, respectively. Within these sediments fall deposits and lavas are sparsely intercalated. The clastic material is almost exclusively of volcanic origin, ranging in composition from andesite to rhyolite. Thick gravity-driven deposits and large-scale alluvial fan environments document the buildup of steep volcanic edifices. K-Ar and Ar-Ar dates, in addition to eight magnetostratigraphic sections and lithological correlations served to construct a chronostratigraphy for the entire Tepoztlán Formation. Correlation of the 577 m composite magnetostratigraphic section with the Cande and Kent (1995) Geomagnetic Polarity Time Scale (GPTS) suggests that this section represents the time intervall 22.8–18.8 Ma (6Bn.1n-5Er; Aquitanian-Burdigalian, Lower Miocene). This correlation implies a deposition of the TF predating the extensive effusive activity in the TMVB at 12 Ma and is therefore interpreted to represent its initial phase with predominantly explosive activity. Additionally, three subdivisions of the TF were established, according to the dominant mode of deposition: (1) the fluvial dominated Malinalco Member (22.8–22.2 Ma), (2) the volcanic dominated San Andrés Member (22.2–21.3 Ma) and (3) the mass flow dominated Tepozteco Member (21.3–18.8 Ma).
    Keywords: Magnetostratigraphy; K-Ar Geochronology; Volcaniclastics; Miocene; Tepoztlán Formation; Transmexican Volcanic Belt; Central Mexico ; 551 ; Earth Sciences; Sedimentology; Mineralogy; Geophysics/Geodesy; Geology
    Language: English
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  • 74
    Publication Date: 2021-03-29
    Description: The Sierra Ballena Shear Zone (SBSZ) is part of a high-strain transcurrent system that divides the Neoproterozoic Dom Feliciano Belt of South America into two different domains. The basement on both sides of the SBSZ shows a deformation stage preceding that of the transcurrent deformation recognized as a high temperature mylonitic foliation associated with migmatization. Grain boundary migration and fluid-assisted grain boundary diffusion enhanced by partial melting were the main deformation mechanisms associated with this foliation. Age estimate of this episode is 〉658 Ma. The second stage corresponds to the start of transpressional deformation and the nucleation and development of the SBSZ. During this stage, pure shear dominates the deformation, and is characterized by the development of conjugate dextral and sinistral shear zones and the emplacement of syntectonic granites. This event dates to 658–600 Ma based on the age of these intrusions. The third stage was a second transpressional event at about 586 to 〈560 Ma that was associated with the emplacement of porphyry dikes and granites that show evidence of flattening. Deformation in the SBSZ took place, during the late stages, under regional low-grade conditions, as indicated by the metamorphic paragenesis in the supracrustals of the country rocks. Granitic mylonites show plastic deformation of quartz and brittle behavior of feldspar. A transition from magmatic to solid-state microstructures is also frequently observed in syntectonic granites. Mylonitic porphyries and quartz mylonites resulted from the deformation of alkaline porphyries and quartz veins emplaced in the shear zone. Quartz veins reflect the release of silica associated with the breakdown of feldspar to white mica during the evolution of the granitic mylonites to phyllonites, which resulted in shear zone weakening. Quartz microstructures characteristic of the transition between regime 2 and regime 3, grain boundary migration and incipient recrystallization in feldspar indicate deformation under lower amphibolite to upper greenschist conditions (550–400°C). On the other hand, the mylonitic porphyries display evidence of feldspar recrystallization suggesting magmatic or high-T solid-state deformation during cooling of the dikes.
    Keywords: Brasiliano; Pan-African; Shear zone; Dom Feliciano Belt; Uruguay; Kinematic analysis ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
    Language: English
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  • 75
    Publication Date: 2021-03-29
    Description: Movement within the Earth’s upper crust is commonly accommodated by faults or shear zones, ranging in scale from micro-displacements to regional tectonic lineaments. Since faults are active on different time scales and can be repeatedly reactivated, their displacement chronology is difficult to reconstruct. This study represents a multi-geochronological approach to unravel the evolution of an intracontinental fault zone locality along the Danube Fault, central Europe. At the investigated fault locality, ancient motion has produced a cataclastic deformation zone in which the cataclastic material was subjected to hydrothermal alteration and K-feldspar was almost completely replaced by illite and other phyllosilicates. Five different geochronological techniques (zircon Pb-evaporation, K–Ar and Rb–Sr illite, apatite fission track and fluorite (U-Th)/He) have been applied to explore the temporal fault activity. The upper time limit for initiation of faulting is constrained by the crystallization age of the primary rock type (known as “Kristallgranit”) at 325 ± 7 Ma, whereas the K–Ar and Rb–Sr ages of two illite fractions 〈2 μm (266–255 Ma) are interpreted to date fluid infiltration events during the final stage of the cataclastic deformation period. During this time, the “Kristallgranit” was already at or near the Earth’s surface as indicated by the sedimentary record and thermal modelling results of apatite fission track data. (U–Th)/He thermochronology of two single fluorite grains from a fluorite–quartz vein within the fault zone yield Cretaceous ages that clearly postdate their Late-Variscan mineralization age. We propose that later reactivation of the fault caused loss of helium in the fluorites. This assertion is supported by geological evidence, i.e. offsets of Jurassic and Cretaceous sediments along the fault and apatite fission track thermal modelling results are consistent with the prevalence of elevated temperatures (50–80°C) in the fault zone during the Cretaceous.
    Keywords: Argillic alteration; Fault zone; K–Ar illite; Apatite fission track; (U–Th)/He thermochronology ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
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  • 76
    Publication Date: 2021-03-29
    Keywords: Community-based co-management; Community forestry; Livelihood; Governance; Policy; Mechanism; Participation ; 551 ; Environment; Climate Change; Geology; Oceanography; Geography (general); Regional/Spatial Science; Nature Conservation
    Language: English
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  • 77
    Publication Date: 2021-03-29
    Description: The application of the SHRIMP U/Pb dating technique to zircon and monazite of different rock types of the Sierras de Córdoba provides an important insight into the metamorphic history of the basement domains. Additional constraints on the Pampean metamorphic episode were gained by Pb/Pb stepwise leaching (PbSL) experiments on two titanite and garnet separates. Results indicate that the metamorphic history recorded by Crd-free gneisses (M2) started in the latest Neoproterozoic/earliest Cambrian (553 and 543 Ma) followed by the M4 metamorphism at ~530 Ma that is documented in the diatexites. Zircon ages of 492 Ma in the San Carlos Massif correlate partly with rather low Th/U ratios (〈0.1) suggesting their growth by metamorphic fluids. This age is even younger than the PbSL titanite ages of 506 Ma. It is suggested that the fluid alteration relates to the beginning of the Famatinien metamorphic cycle in the neighbouring Sierra de San Luis and has not affected the titanite ages. The PTt evolution can be correlated with the plate tectonic processes responsible for the formation of the Pampean orogene, i.e., the accretion of the Pampean basement to the Río de La Plata craton (M2) and the later collision of the Western Pampean basement with the Pampean basement.
    Keywords: Eastern Sierras Pampeanas; Sierras de Córdoba; Pampean and Famatinian cycles; Geodynamic evolution; SHRIMP dating; Titanite and Garnet Pb–Pb step-wise leaching ; 551 ; Earth Sciences; Geology ; Geophysics/Geodesy
    Language: English
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  • 78
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    Springer-Verlag | Berlin/Heidelberg
    Publication Date: 2021-04-25
    Description: Aspidochirote holothurian ossicles were discovered in Upper Ordovician-aged Öjlemyr cherts from Gotland, Sweden. The well-preserved material allows definitive assignment to the family Synallactidae, a deep-sea sea cucumber group that is distributed worldwide today. The new taxon Tribrachiodemas ordovicicus gen. et sp. nov. is described, representing the oldest member of the Aspidochirotida. The further fossil record of Synallactidae and evolutionary implications are also discussed.
    Keywords: Echinodermata; Holothuroidea; Ordovician; Sweden; Baltic Sea; Echinodermata; Holothuroidea; Ordovizium; Schweden; Ostsee ; 551 ; Earth Sciences; Paleontology
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  • 79
    Publication Date: 2021-03-29
    Description: The configurational heat capacity, shear modulus and shear viscosity of a series of Na2O–Fe2O3–Al2O3–SiO2 melts have been determined as a function of composition. A change in composition dependence of each of the physical properties is observed as Na2O/(Na2O + Al2O3) is decreased, and the peralkaline melts become peraluminous and a new charge-balanced Al-structure appears in the melts. Of special interest are the frequency dependent (1 mHz–1 Hz) measurements of the shear modulus. These forced oscillation measurements determine the lifetimes of Si–O bonds and Na–O bonds in the melt. The lifetime of the Al–O bonds could not, however, be resolved from the mechanical spectrum. Therefore, it appears that the lifetime of Al–O bonds in these melts is similar to that of Si–O bonds with the Al–O relaxation peak being subsumed by the Si–O relaxation peak. The appearance of a new Al-structure in the peraluminous melts also cannot be resolved from the mechanical spectra, although a change in elastic shear modulus is determined as a function of composition. The structural shear-relaxation time of some of these melts is not that which is predicted by the Maxwell equation, but up to 1.5 orders of magnitude faster. Although the configurational heat capacity, density and shear modulus of the melts show a change in trend as a function of composition at the boundary between peralkaline and peraluminous, the deviation in relaxation time from the Maxwell equation occurs in the peralkaline regime. The measured relaxation times for both the very peralkaline melts and the peraluminous melts are identical with the calculated Maxwell relaxation time. As the Maxwell equation was created to describe the timescale of flow of a mono-structure material, a deviation from the prediction would indicate that the structure of the melt is too complex to be described by this simple flow equation. One possibility is that Al-rich channels form and then disappear with decreasing Si/Al, and that the flow is dominated by the lifetime of Si–O bonds in the Al-poor peralkaline melts, and by the lifetime of Al–O bonds in the relatively Si-poor peralkaline and peraluminous melts with a complex flow mechanism occurring in the mid-compositions. This anomalous deviation from the calculated relaxation time appears to be independent of the change in structure expected to occur at the peralkaline/peraluminous boundary due to the lack of charge-balancing cations for the Al-tetrahedra.
    Keywords: Frequency dependent; Shear modulus; Heat capacity; Silicate melts; Relaxation time ; 551 ; Earth Sciences; Mineral Resources ; Geochemistry ; Mineralogy ; Crystallography
    Language: English
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  • 80
    Publication Date: 2021-03-29
    Description: The giant ignimbrites that erupted from the Cerro Galán caldera complex in the southern Puna of the high Andean plateau are considered to be linked to crustal and mantle melting as a consequence of delamination of gravitationally unstable thickened crust and mantle lithosphere over a steepening subduction zone. Major and trace element analyses of Cerro Galán ignimbrites (68–71% SiO2) that include 75 new analyses can be interpreted as reflecting evolution at three crustal levels. AFC modeling and new fractionation corrected δ18O values from quartz (+7.63–8.85‰) are consistent with the ignimbrite magmas being near 50:50 mixtures of enriched mantle (87Sr/86Sr ~ 0.7055) and crustal melts (87Sr/86Sr near 0.715–0.735). Processes at lower crustal levels are predicated on steep heavy REE patterns (Sm/Yb = 4–7), high Sr contents (〉250 ppm) and very low Nb/Ta (9-5) ratios, which are attributed to amphibolite partial melts mixing with fractionating mantle basalts to produce hybrid melts that rise leaving a gravitationally unstable garnet-bearing residue. Processes at mid crustal levels create large negative Eu anomalies (Eu/Eu* = 0.45–0.70) and variable trace element enrichment in a crystallizing mush zone with a temperature near 800–850°C. The mush zone is repeatedly recharged from depth and partially evacuated into upper crustal magma chambers at times of regional contraction. Crystallinity differences in the ignimbrites are attributed to biotite, zoned plagioclase and other antecrysts entering higher level chambers where variable amounts of near-eutectic crystallization occurs at temperatures as low as 680°C just preceding eruption. 40Ar/39Ar single crystal sanidine weighted mean plateau and isochron ages combined with trace element patterns show that the Galán ignimbrite erupted in more than one batch including a ~ 2.13 Ma intracaldera flow and outflows to the west and north at near 2.09 and 2.06 Ma. Episodic delamination of gravitationally unstable lower crust and mantle lithosphere and injection of basaltic magmas, whose changing chemistry reflects their evolution over a steepening subduction zone, could trigger the eruptions of the Cerro Galán ignimbrites.
    Keywords: Cerro Galán; Puna ignimbrite chemistry; 40Ar/39Ar ages; Delamination; Plateau evolution ; 551 ; Earth Sciences; Sedimentology; Geophysics/Geodesy; Mineralogy; Geology
    Language: English
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  • 81
    Publication Date: 2021-03-29
    Description: The construction suitability of a dimension stone depends on its weathering properties along with the petrology and the petrophysical properties. The aim of this study was to evaluate the suitability of the dimension stones from the “Drei Gleichen” area for construction and replacement purposes. In total, six sandstones (Ingersleben, Wachsenburg, Hindfelden, Seeberg, Röhnberg, Gleichenberg; Upper Triassic) as well as two carbonates (Wachsenburg sinter; Quaternary, Wandersleben dolomite; Middle Triassic) were analysed. The results from our laboratory and on-site studies of the dimension stones show that rocks from the same stratigraphic layer, like the sandstones from the upper Triassic, can show major differences in their petrophysical and weathering properties. These differences are attributed to their different diagenesis, resulting, e.g. in varying pore space, water balance and strength properties. The pore size distribution can be divided into four different groups based on their occurring maxima and micropore content. The determined water balance properties as well as moisture expansion and salt attack depend on these groups. Next to this, the mineralogical composition significantly influences the weathering resistance. Sandstones with a high content of altered lithoclasts show a high amount of moisture expansion, low strength and, in consequence, a low weathering resistance against salt attack. Based on the results of the present study, an evaluation of construction suitability could be accomplished. From the analysed sandstones, only the Seebergen sandstone is suitable for construction purposes due to its good availability, good strength properties (high compressive and tensile strength, low softening degree) as well as a low porosity. Furthermore, the Wachsenburg sandstone also shows good petrophysical and petrological properties, but exploitable deposits are too sparse to be of commercial interest. From the carbonates, the Wachsenburg sinter shows very suitable rock parameters, but only sparse outcrops occur, which are not appropriate for mining.
    Keywords: Dimension stones; Sandstones; Carbonates; Weathering ; 551 ; Earth Sciences; Geology
    Language: English
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  • 82
    Publication Date: 2021-03-29
    Keywords: 551 ; Earth Sciences; Geology
    Language: English
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  • 83
    Publication Date: 2021-03-29
    Description: In the Aztec period and in colonial times different natural stones originating in the Valley of Mexico were used for building construction. Stone weathering was investigated onsite at various historical buildings within the old quarter of Mexico City. In this study, different aspects of weathering and deterioration at three significant historical buildings will be presented, the Aztec excavation site Templo Mayor, the Metropolitan Cathedral, and the colonial palace of the dukes of Heras Soto. Petrophysical properties of the main building stones of these structures were investigated like density, porosity, pore radii distribution, water uptake rate and coefficient, thermal and hygric expansion, and the mechanical properties of uniaxial compressive strength. A relationship between single critical property values, according to anisotropy fabric characteristics, and specific weathering forms could be deduced.
    Keywords: Stone weathering; Mexico-DF; Petrophysical properties; Isotropy–anisotropy; Critical values ; 551 ; Earth Sciences; Geology
    Language: English
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  • 84
    Publication Date: 2021-03-29
    Description: A 782 d solubilization study using not shaken batch experiments and involving one uranium-bearing rock and three natural carbonate minerals was conducted to characterize uranium (U) leaching under oxic conditions. Results showed that aqueous U concentration increased continuously with a solubilization rate of 0.16 mgm-2h-1 for the first 564 d (1.5 y). After 1.5 y, U concentration reached a maximum value (saturation) and decreased afterwards. The saturation concentration of 54 mgL-1 (mean value) was influenced to various extent by the presence of carbonate minerals. Dissolution/precipitation, adsorption or ion exchange processes appear to control U solubilization.
    Keywords: 551
    Language: English
    Type: anthologyArticle , acceptedVersion
    Format: 425-435
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  • 85
    Publication Date: 2021-03-29
    Keywords: Wadi Kafrein; Groundwater modelling; Model calibration; Arid and semiarid areas ; 551 ; Earth Sciences; Geology
    Language: English
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  • 86
    Publication Date: 2021-04-24
    Description: The northern German Lower Cretaceous Bückeberg Formation yields numerous dinosaur tracksites, some of which have produced material of impressive quality. Stratigraphically, the localities are concentrated in the Obernkirchen Sandstone, a thin subunit within this formation. The Obernkirchen Sandstone represents mainly a sandy barrier to back-barrier and lagoonal setting within a limnic deltaic facies complex, which was deposited during the late Berriasian (Cypridea alta formosa ostracod subzone) in the southeast of the Lower Saxony Basin, northwest Germany. A few tracksites occur more proximally in coeval fluvial deposits. Dinosaur footprint assemblages were left by ornithopods, theropods, sauropods, ankylosaurs, and small, bipedal ornithischians. Other vertebrate tracks are those of turtles and, possibly, crocodilians. Due to the decrease in sandstone quarrying in recent decades, many old tracksites are inaccessible today. Additionally, historical descriptions of the tracks were of highly variable quality and often published in remote and today nearly unobtainable sources. Here we provide a catalogue of 13 tracksites compiled from the literature and some new observations. Of these 13 tracksites, only five are still accessible and currently under study. Descriptions of each locality are provided, with a comprehensive compilation of existing data on lithofacies, stratigraphy, palaeogeography and palaeoecology of the Obernkirchen Sandstone and equivalent strata. A short review of the track-bearing lithofacies assemblage indicates that the outcrop areas have distinctly different facies and environments, and, therefore, track-bearing horizons can only be correlated stratigraphically between adjacent outcrops. For this reason, the identification of a megatracksite in the Obernkirchen Sandstone is currently regarded as premature and uncertain.
    Keywords: Vertebrate tracks; Dinosauria; Cretaceous; Berriasian; Obernkirchen; Münchehagen; Germany; Wirbeltier-Fährten; Dinosauria; Kreide; Berriasium; Obernkirchen; Münchehagen; Deutschland ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 87
    facet.materialart.
    Unknown
    Springer-Verlag Berlin Heidelberg | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: Many of the reasons behind the anthropogenic contamination problems in rural environments of developing countries lie in changes in the traditional way of life and the ignorance on the toxic potential of introduced manufactured products. A generalization trend exists within the international community suggesting that water in developing countries is of poor quality. However, the water quality is rarely analytically determined. Existing potabilization solutions may be prohibitively expensive for the rural populations. Therefore, efficient and affordable technologies are still needed to ameliorate the water quality. In the recent two decades,elemental iron has shown the capacity to remove all possible contaminants (including viruses) from the groundwater. This paper presents a concept to scale down the conventional iron barrier technology to meet the requirements of small communities and households in rural environments worldwide.
    Keywords: 551 ; VJF 000 ; 38.32
    Language: English
    Type: anthologyArticle , acceptedVersion
    Format: 121-130
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  • 88
    Publication Date: 2021-04-25
    Description: The morphologically conspicuous bivalve Oxytoma (Palmoxytoma) cygnipes (Young & Bird, 1822), known for its palaeogeographically bipolar distribution, from a limestone bed in the boundary “Belemniten–Schichten”/Amaltheenton formation, Lower Jurassic, in N Germany is described. The occurrence of this palaeoceanographically significant bivalve points to an influx of cool seawater from the Arctic to the North-German Basin at the base of the Upper Pliensbachian, just before the deposition of the Amaltheenton formation. A review of previously reported occurrences on the NW European Shelf indicates two distinct stratigraphic intervals of occurrence of this taxon: the Rhaetian–Hettangian boundary and the Upper Pliensbachian. Whereas the former interval of occurrence may be related to short-term cooling in the course of the end-Triassic extinction event, the latter is interpreted as reflecting the influx of a cool water current to the eastern part of the NW European Shelf, which continued southwards parallel to the coast of the Bohemian–Vindelician High.
    Keywords: Bivalvia; Germany; Triassic–Jurassic boundary; Pliensbachian; Boreal; Bivalvia; Deutschland; Trias–Jura-Grenze; Pliensbachium; Boreal ; 551 ; Earth Sciences; Paleontology
    Language: English
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  • 89
    Publication Date: 2021-03-29
    Description: In the present study, the diversity of ascomycete fungi was investigated on two wall areas of the “Burg Gleichen”, Thuringia (Germany), made of various types of sandstones, travertine and Grenzdolomit. From a W-exposed, shaded wall area, free-living ascomycetes (mainly “black fungi”) and green algae could be retrieved from sandstone lithologies. Sandstone from an ESE-exposed area was mainly colonized by lichen ascomycetes and the lichen alga Trebouxia. Both areas share a small number of generalist species, related to the ascomycete black fungi Sarcinomyces petricola, Phaeococcomyces chersonesos and Stichococcus mirabilis. Free-living black fungi were isolated and characterized with respect to cell wall morphology and melanin content. A remarkably rigid melanin layer, incorporated in the cell wall of a Cladosporium isolate is presented in detail.
    Keywords: Dimension stone; Biofilm; Ascomycete fungi; Green algae; Cell wall; Melanin ; 551 ; Earth Sciences; Geology
    Language: English
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  • 90
    Publication Date: 2021-03-29
    Description: Microstructure-based finite element simulations were used to study the influence of grain shape fabric and crystal texture on thermoelastic responses related to marble degradation phenomena. Calcite was used as an illustrative example for studying extremes of shape preferred orientation (SPO) in shape fabric and lattice preferred orientation (LPO) in crystal texture. Three SPOs were analyzed: equiaxed grains, elongated grains, and a mixture of equiaxed and elongated grains. Three LPOs were considered: a random orientation distribution function and two degrees of strong directional crystal texture. Finally, the correlation between the direction of the LPO with respect to that of the SPO was examined. Results show that certain combinations of SPO, LPO, and their directional relationship have significant influence on the thermomechanical behavior of marble. For instance, while there is no major dependence of the elastic strain energy density and the maximum principal stress on SPO for randomly textured microstructures, there is a strong synergy between LPO and its directional relationship with respect to the SPO direction. Microcracking precursors, elastic strain energy density, and maximum principal stress, decrease when the crystalline c-axes have fiber texture perpendicular to the SPO direction, but increase significantly when the c-axes have fiber texture parallel to the SPO direction. Moreover, the microstructural variability increases dramatically for these latter configurations. In general, the influence of LPO was as expected, namely, the strain energy density and the maximum principal stress decreased with more crystal texture, apart from for the exception noted above. Spatial variations of these precursors indicated regions in the microstructure with a propensity for microcracking. Unexpectedly, important variables were the microstructural standard deviations of the spatial distributions of the microcracking indicators. These microstructural standard deviations were as large as or larger than the variables themselves. The elastic misfit-strain contributions to the coefficients of thermal expansion were also calculated, but their dependence was as expected.
    Keywords: Shape fabric; Shape preferred orientation; Crystal texture; Lattice preferred orientation; Marble; Calcite; Finite element simulations; Thermal expansion anisotropy; Elastic strain energy density; Maximum principal stress; Orientation distribution function; Coefficient of thermal expansion ; 551 ; Earth Sciences; Geology
    Language: English
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  • 91
    Publication Date: 2021-03-29
    Description: The present study documents the results of an inter-disciplinary model project that was planned with the aim of developing an innovative winter covering system for marble statuaries located on the Schlossbrücke (Berlin). Such a system would need to fulfil the various requirements for structural stability, aesthetics, climate and practical use. This applied research represents the first complex scientific study of the sustainability of a winter covering system. The study is characterised by the use of complex scientific instruments such as special laboratory analysis and numerical simulation tools. The interaction between the environment and the artefacts in connection with the innovative winter covering structures were studied by extensive climatic monitoring.
    Keywords: Marble sculptures; Marble weathering; Winter cover; Climate data; Numerical simulations ; 551 ; Earth Sciences; Geology
    Language: English
    Type: article , publishedVersion
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  • 92
    facet.materialart.
    Unknown
    Springer Berlin Heidelberg | Berlin/Heidelberg
    Publication Date: 2021-03-29
    Description: This study evaluates and compares the trends in CO2 emissions for the manufacturing industries of three countries: two developed countries (Germany and Sweden) that have applied several measures to promote a shift towards a low-carbon economy and one developing country (Colombia) that has shown substantial improvements in the reduction of CO2 emissions. This analysis is conducted using panel data cointegration techniques to infer causality between CO2 emissions, production factors and energy sources. The results indicate a trend of producing more output with less pollution. The trends for these countries’ CO2 emissions depend on investment levels, energy sources and economic factors. Furthermore, the trends in CO2 emissions indicate that there are emission level differences between the two developed countries and the developing country. Moreover, the study confirms that it is possible to achieve economic growth and sustainable development while reducing greenhouse gas emissions, as Germany and Sweden demonstrate. In the case of Colombia, it is important to encourage a reduction in CO2 emissions through policies that combine technical and economic instruments and incentivise the application of new technologies that promote clean and environmentally friendly processes.
    Keywords: CO2 emissions; Manufacturing industries; Panel data model ; 551 ; Environment; Climate Change; Climate Change Impacts; Oceanography; Geography (general); Regional/Spatial Science; Nature Conservation
    Language: English
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  • 93
    Publication Date: 2021-03-29
    Description: Severe stone deterioration is evident at the Cologne cathedral. In particular, the “Drachenfels” trachyte, which was the building material of the medieval construction period, shows significant structural deterioration as well as massive formation of gypsum crusts. The present article investigates crust formation on limestone, sandstone, and volcanic rock from the Cologne cathedral as well as from the Xanten and Altenberg cathedrals. These three buildings, showing varying degrees of deterioration, are located in different areas and exposed to varying industrial, urban, and rural pollution. Thin laminar and black framboidal crusts form on calcareous as well as silicate stone. The lack of a significant intrinsic calcium and sulfur source for the formation of the gypsum crusts on the Drachenfels trachyte indicates major extrinsic environmental impact: a sufficient offer of SOx from pollutant fluxes as well as external calcium sources (e.g., pollution, mortars, neighboring calcite stones). Chemical analyses reveal strong gypsum enrichment within the crusts as well as higher concentrations of lead and other pollutants (arsenic, antimony, bismuth, tin, etc.), which generally can be linked to traffic and industry. The formation of weathering crusts in an industrial environment is clearly distinguishable from that in rural areas. Scanning electron microscopy observations confirm that the total amount of pollution is less at the Altenberg cathedral than at the Cologne and Xanten cathedrals. XRF analyses show that the formation of gypsum occurs in lower amounts at Altenberg. This correlates well with the measured SO2 content and the intensity of the decay at the different locations. Furthermore, the different types of crusts, e.g., framboidal and laminar, can be differentiated and assigned to the different locations. The black weathering crusts on the silicate Drachenfels trachyte contribute to the degradation of the historic building material. They enhance mechanical moisture-related deterioration processes and the decay by chemical corrosion of rock-forming minerals. Although SO2 concentrations in air have shown a strong decrease over the past 30 years, degradation in connection with weathering crusts is still observed. This indicates that not only contemporary or recent emissions, but also past pollutant concentrations have to be considered.
    Keywords: Cologne cathedral; Xanten cathedral; Altenberg cathedral; Weathering crusts; Pollution impact; Stone decay processes; Drachenfels trachyte ; 551 ; Earth Sciences; Geology
    Language: English
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  • 94
    Publication Date: 2021-03-29
    Description: The St. Servatius Church in Quedlinburg (UNESCO’s World Heritage Site, Germany) is characterised by long-standing stability problems and structural damages, which have been known over the last several centuries. The monotonous Cretaceous sandstone with its poor lithification is considered to be the main factor. The sandstone is characterised by a high porosity of around 30 Vol.% (max. ca. 35 Vol.%) and a corresponding high w-value. The porosity and the degree of cementation are responsible for the very low compressive strength of around 8 MPa at maximum, whereas under moisture these values are significantly reduced up to 40%. The freeze–thaw tests indicate a very poor resistance to frost weathering, which may explain the near-surface softening of the sandstone. Direct shear experiments with an approximate 60° angle of friction on the sandstone clearly demonstrate the safety margins. Initial geotechnical modelling does not favour the hypothesis that a landslide of the hill parallel to the southward dipping bedding planes (i.e. shear failure along weak zones) can occur. A prominent clay layer (also with a southward dip) below the entire castle hill is monitored to determine the possible amount of movement with respect to the geological discontinuities (e.g. joints, fractures). At present, a combination of foundation problems are being considered for the stability situation at the church. These include construction deficiencies due to deformation or softening of the foundation of the forerunner churches and missing or faulty connections from building additions. Geological factors responsible for the stability problems include the softening of the sandstone by the influence of weathering and penetrating water as well as the presence of possible shear planes and joints.
    Keywords: Cretaceous sandstone; Lithology; Diagenetic processes; Weathering; Petrophysical properties; Stability assessment ; 551 ; Earth Sciences; Geology
    Language: English
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  • 95
    Publication Date: 2021-03-29
    Description: Dimensional stones with a black color occupy a prominent place on the international market. Uruguayan dolerite dikes of andesitic and andesitic–basaltic composition are mined for commercial blocks of black dimensional stones. A total of 16 dikes of both compositions were studied and samples collected for geochemical and petrographical analysis. Color measurements were performed on different black dimensional stones in order to compare them with the Uruguayan dolerites. Samples of the two commercial varieties (Absolute Black and Moderate Black) were obtained for petrophysical analysis (e.g. density, porosity, uniaxial compressive strength, tensile strength, etc.). Detailed structural analyses were performed in several quarries. Geochemistry and petrography determines the intensity of the black color. The Uruguayan dolerite Absolute Black is the darkest black dimensional stone analyzed in this study. The petrophysical properties of Uruguayan dolerites make them one of the highest quality black dimensional stones. Structural analyses show that five joint sets have been recognized: two sub-vertical joints, one horizontal and two diagonal. These joint sets are one of the most important factors that control the deposits, since they control the block size distribution and the amount of waste material.
    Keywords: Dolerites; Black dimensional stones; Petrophysical properties; Structural analysis; Block size distribution; Uruguay ; 551 ; Earth Sciences; Geology
    Language: English
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  • 96
    Publication Date: 2021-03-29
    Description: One of the properties that makes marble such an excellent construction and ornamental material is its low porosity. It is very difficult for water or decay agents to penetrate the internal structure of materials with no or few pores, so enhancing the durability of these materials. However, environmental temperature fluctuations bring about significant physical changes in marbles that result in an increase in porosity, due to the appearance of new microcracks and the expansion of existing ones. These cracks offer new paths into the marble which make it easier for solutions containing pollutants to penetrate the material. Thermal expansion tests were performed on three different types of marble known as White, Tranco, and Yellow Macael (Almeria, Spain), after which an increase in porosity (from 17 to 73% depending on marble type) was observed, mainly due to crack formation. The structural changes occurring during thermal expansion tests were more significant in the case of White Macael samples, a fact that is not only related to its mineralogical composition but also to the morphology of the grains, grain boundaries and crystal size. Our research suggests that thermally weathered White Macael marble could be more susceptible to decay by other contaminant agents than Tranco or Yellow Macael. The use of hot-stage environmental scanning electron microscopy is proposed as a valid tool for observing, both in situ and at high magnification, changes in the fracture system of building stones induced by thermal stress.
    Keywords: Marble; Microcracks; Thermal expansion anisotropy; Grain boundaries ; 551 ; Earth Sciences; Geology
    Language: English
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  • 97
    Publication Date: 2021-03-29
    Keywords: 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
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  • 98
    Publication Date: 2020-02-12
    Description: In summer 2017, the ICDP SUSTAIN project (Surtsey Underwater volcanic System for Thermophiles, Alteration processes and INnovative concretes), drilled three cored boreholes (Table 1) through Surtsey at sites ≤10 m from a cored hole obtained in 1979. Drilling through the still hot volcano was carried out with an Atlas Copco CS1000 drill rig, whose components were transported by helicopter to Surtsey and re-assembled on site. The first vertical borehole, SE-02a, was cored in HQ diameter to 152 meters below surface (m b.s.) during August 7-16. It was terminated due to borehole collapse. A second vertical (SE-02b) cored borehole was then drilled in HQ diameter to 192 m during August 19-26. Wireline borehole logging in SE-02b was performed August 26. The anodized NQ-sized aluminum tubing of the Surtsey Subsurface Observatory was installed in SE-02b to 181 m depth on August 27. A third borehole, SE-03, angled 35° from vertical and directed 264°, was drilled from August 28 to September 4 and reached a measured depth of 354 m (~290 m vertical depth) under the eastern crater. The core is HQ diameter to a measured depth of 213 m and NQ diameter from 213-354 m measured depth. The core traverses the deep conduit and intrusions of the volcano to a total vertical depth of 290 m b.s. Seawater drilling fluid for boreholes SE-02a and SE-02b was filtered and doubly UV-sterilized at the drill site. No mud products were employed while coring SE-02a, while small amounts of attapulgite mud were used in SE-02b and SE-03. Core samples for geochemical analyses of pore water and microbiological investigations were collected on site from all three boreholes. About 650 m of core was transported by helicopter to Heimaey, 18 km northeast of Surtsey, to a processing laboratory where the core was scanned, documented, and described. Additional core processing has taken place at the Náttúrufraedistofnun Íslands, the Icelandic Institute of Natural History in Gardabaer, where both the 1979 and 2017 cores are stored.
    Language: English
    Type: info:eu-repo/semantics/report
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  • 99
    Publication Date: 2020-02-12
    Description: On a beautiful summer day Emma and Steven want to have fun at their favourite lake. However, a mysterious situation thwarts their plans. This leads the two friends on an unexpected quest ... Join Emma and Steven as they explore the vast, intriguing and efficient world of stable isotopes: What are isotopes? How do isotopes work? And last but not least, how can isotopes help Emma and Steven to finally answer the question: Who poisoned Family Mole?
    Language: English
    Type: info:eu-repo/semantics/book
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  • 100
    Publication Date: 2020-02-12
    Description: Length: 32 min What forms the landscapes of the Earth with its mountains, rivers, soils, the places we live in? Is Earth’s surface shaped when rocks are uplifted by geologic forces, and are then destroyed by rain, ice, and wind; or do plants with their roots, animals that dig into soil and the vast number of microorganisms shape the landscapes? Watch the scientists of the German-Chilean “EarthShape” project study these questions along a fascinating landscapes in Chile, and in their home laboratories. A science movie designed and produced by Friedhelm von Blanckenburg from GFZ Potsdam, Germany, Kirstin Übernickel from Universität Tübingen, and Wolfgang Dümcke from Filmbüro Potsdam, Germany, within the DFG-funded research network “EarthShape – Earth Surface Shaping by Biota” which is coordinated by Todd Ehlers (Universität Tübingen) und Friedhelm von Blanckenburg (GFZ Potsdam).
    Language: English
    Type: info:eu-repo/semantics/other
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