ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Springer-Verlag  (59)
  • Oxford : Oxford University Press  (31)
  • English  (90)
  • Chinese
  • Danish
  • Romanian
  • Turkish
  • 2015-2019  (90)
  • 1945-1949
Collection
Keywords
Language
  • English  (90)
  • Chinese
  • Danish
  • Romanian
  • Turkish
Years
Year
  • 1
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK D 024-16-90309 ; IASS 17.90309
    Description / Table of Contents: "Climate change is a pressing international political issue, for which a practical but principled solution is urgently required. Climate Justice in a Non-Ideal World aims to make normative theorising on climate justice more relevant and applicable to political realities and public policy. The motivation behind this edited collection is that normative theorising has something to offer even in an imperfect world mired by partial compliance and unfavourable circumstances. In the last years, a lively debate has sprung up in political philosophy about non-ideal theory and there has also been an upsurge of interest in the various normative issues raised by climate change such as intergenerational justice, transnational harm, collective action, or risk assessment. However, there has been little systematic discussion of the links between climate justice and non-ideal theory even though the former would seem like a paradigm example of the relevance of the latter. The aim of this edited volume is to address this. In doing so, the volume presents original work from leading experts on climate ethics, including several who have participated in climate policy. The first part of the book discusses those facets of the debate on climate justice that become relevant due to the shortcomings of current global action on climate change. The second part makes specific suggestions for adjusting current policies and negotiating procedures in ways that are feasible in the relatively short term while still decreasing the distance between current climate policy and the ideal. The chapters in the third and final part reflect upon how philosophical work can be brought to bear on the debates in climate science, communication, and politics."--
    Type of Medium: Monograph available for loan
    Pages: xvii, 323 Seiten , 24 cm
    Edition: 1. edition
    ISBN: 9780198744047
    Language: English
    Note: Climate change and non-ideal theory : six ways of responding to non-compliance / Simon Caney -- A climate of disorder : what to do about the obstacles to effective climate politics / Aaron Maltais -- Difference-making and individuals' climate-related obligations / Holly Lawford-Smith -- Reducing injustice within the bounds of motivation / Dominic Roser -- Taking UNFCCC norms seriously / Darrel Moellendorf -- Justice and choice of legal instrument under the Durban mandate : ideal and not so ideal legal forms / Peter Lawrence -- Emissions trading schemes in a 'non-Ideal' world / Jonathan Aldred -- A responsible path : advancing a full-participation climate regime through enhanced action on short-lived climate pollutants / Andrew Light and Gwynne Taraska -- Climate justice for LDCs through global decisions / Achala Abeysinghe and Saleemul Huq -- A free movement passport for the territorially dispossessed / Clare Heyward and Jorgen Odalen -- Aristotle on the ethics of communicating climate change / Melissa Lane and Michael Lamb -- Moral language in climate politics / Jonathan Pickering -- The costs of moralizing : how about a 'government house climate ethics'? / Christian Seidel -- Principles or pathways? Improving the contribution of philosophical ethics to climate policy / Martin Kowarsch and Ottmar Edenhofer..
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 16.90506
    Description / Table of Contents: In times of climate change and public debt, a concern for intergenerational justice should lead us to have a closer look at theories of intergenerational justice. It should also press us to provide institutional design proposals to change the decision-making world that surrounds us. This book provides an exhaustive overview of the most important institutional proposals as well as a systematic and theoretical discussion of their respective features and advantages. It focuses on institutional proposals aimed at taking the interests of future generations more seriously, and does so from the perspective of applied political philosophy, being explicit about the underlying normative choices and the latest developments in the social sciences. It provides citizens, activists, firms, charities, public authorities, policy-analysts, students, and academics with the body of knowledge necessary to understand what our institutional options are and what they entail if we are concerned about today's excessive short-termism
    Type of Medium: Monograph available for loan
    Pages: XI, 432 Seiten
    ISBN: 0198746954 , 9780198746959
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK B 100-17-91198
    Description / Table of Contents: The financial crisis of 2007 and the following recession present a major challenge to macroeconomic theory. The same holds true for exceptionally low interest rates during the recent years and for the puzzle that super-expansive monetary policies failed to produce high inflation. Approaches that focus on steady states, rational expectations, and individuals planning over infinite horizons, are not suitable for analysing such abnormal situations. 'A Study in Monetary Macroeconomics' refines and improves mainstream approaches to resolve these puzzles and to contribute to a better understanding of monetary and fiscal policies. Using a rich institutional structure that includes features such as credit money, external finance, borrowing constraints, net worth, real estate and commercial banks, this timely study reduces rationality requirements to cope with its complex setting. It starts with a simple baseline model, deriving results from mathematical reasoning and simulations whilst adhering to the method of dynamic general equilibrium (DGE) with optimizing agents and fully specified models. Highly topical, 'A Study in Monetary Macroeconomics' uses a unified theoretical framework to demonstrate that a DGE approach makes it possible to develop clean models that work outside steady states and are appropriate for answering macroeconomic questions of actual interest
    Type of Medium: Monograph available for loan
    Pages: x, 205 Seiten , Diagramme
    Edition: First edition
    ISBN: 9780198807537
    Language: English
    Note: Contents: 1: Introduction ; 2: Framework ; 3: Traditional topics ; 4: Constrained credit ; 5: Net worth ; 6: Real estate ; 7: Commerical banks ; 8: Methods
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Call number: IASS 19.92042
    Description / Table of Contents: This volume defines, illustrates, and challenges the field on environmental political theory. Through a broad range of approaches, it shows how scholars have used concepts, methods, and arguments from political theory and closely related disciplines to address contemporary environmental problems.
    Type of Medium: Monograph available for loan
    Pages: xvii, 662 Seiten , Diagramm
    Edition: First edition
    ISBN: 9780199685271
    Series Statement: Oxford handbooks
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Call number: PIK M 490-19-92571 ; PIK M 490-19-92571/2
    Type of Medium: Monograph available for loan
    Pages: xiv, 431 Seiten , Illustrationen, Diagramme
    Edition: First edition
    ISBN: 019882193X , 9780198821939
    Language: English
    Note: Contents: 1: Introduction to complex systems ; 2: Probability and random processes ; 3: Scaling ; 4: Networks ; 5: Evolutionary processes ; 6: Statistical mechanics & information theory for complex systems ; 7: The future of the science of complex systems? ; 8: Special functions and approximations
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK B 020-19-92795
    Type of Medium: Monograph available for loan
    Pages: xiii, 571 Seiten , Illustrationen, Diagramme , 25 cm
    Edition: First edition
    ISBN: 9780198804406 , 9780198804390
    URL: Cover
    Language: English
    Note: Contents: Part I: An Introduction to Fortran 90 and Numerical Methods ; 1: Fortran 90: A Simple Programming Language ; 2: Numerical Solution Methods ; Part II: Computational Economics for Beginners ; 3: The Static General Equilibrium Model ; 4: Topics in Finance and Risk Management ; 5: The Life Cycle Model and Intertemporal Choics ; 6: The Overlapping Generations Model ; 7: Extending the OLG Model ; Part III: Advanced Computational Economics ; 8: Introduction to Dynamic Programming ; 9: Dynamic Macro I: Infinite Horizon Models ; 10: Life-Cycle Choices and Risk ; 11: Dynamic Macro II: The Stochastic OLG Model
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Call number: IASS 19.92866
    Type of Medium: Monograph available for loan
    Pages: xxx, 438 Seiten , graphische Darstellungen
    Edition: Second edition
    ISBN: 9780198843504 , 9780198843498
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Call number: PIK N 630-18-91681
    Type of Medium: Monograph available for loan
    Pages: xxii, 231 Seiten , Illustrationen, Diagramme
    Edition: First edition
    ISBN: 9780198757368 , 9780198757375
    Uniform Title: Diversité fonctionnelle des plantes
    Language: English
    Note: Contents: 1: A functional approach to biological diversity ; 2: Trait-based ecology: definitions, methods, and a conceptual framework ; 3: The functional characterisation of plants ; 4: Gradients, response traits, and ecological strategies ; 5: A functional approach to plant community structure ; 6: Plant traits and ecosystem properties ; 7: Functional diversity and ecosystem services ; 8: Functional diversity in agriculture: the cases of grasslands and crop weeds ; 9: Managing functional diversity data ; 10: Perspectives for functional diversity research
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Call number: 9780191079993 (e-book)
    Type of Medium: 12
    Pages: 1 online resource (254 pages)
    Edition: First edition
    ISBN: 9780191079993 (e-book)
    Language: English
    Note: Contents Acknowledgments 1 Introduction to environmental DNA (eDNA) 1.1 Definitions 1.2 A brief history of eDNA analysis 1.3 Constraints when working with eDNA 1.4 Workflow in eDNA studies and main methods used 1.5 Environmental DNA as a monitoring tool 2 DNA metabarcode choice and design 2.1 Which DNA metabarcode? 2.2 Properties of the ideal DNA metabarcode 2.3 In silica primer design and testing 2.3.1 Prerequisites 2.3.2 Reference sequences: description, filtering, and formatting for ecoPrimers 2.3.3 In silica primer design with ecoPrimers 2.3.3.1 'Ihe ecoPrimers output 2.3.4 In silica primer testing with ecoPCR 2.3.4.1 The ecoPCR output 2.3.4.2 Filtering of the ecoPCR output 2.3.4.3 Evaluation of primer conservation 2.3.4.4 Taxonomic resolution and Bs index 2.4 Examples of primer pairs available for DNA metabarcoding 3 Reference databases 3.1 Extracting reference databases from EMBL/GenBank/DDBJ 3.1.1 Downloading a local copy of EMBL 3.1.2 Identifying sequences corresponding to the relevant metabarcode 3.2 Marker-specific reference databases 3.2.1 Nuclear rRNA gene reference databases 3.2.2 Eukaryote-specific databases 3.3 Building a local reference database 3.3.1 PCR-based local reference database 3.3.2 Shotgun-based local reference database 3.4 Current challenges and future directions 4 Sampling 4.1 The cycle of eDNA in the environment 4.1.1 State and origin 4.1.2 Fate 4.1.3 Transport 4.2 Sampling design 4.2.1 Focusing on the appropriate DNA population 4.2.2 Defining the sampling strategy 4.3 Sample preservation 5 DNA extraction 5.1 From soil samples 5.2 From sediment 5.3 From litter 5.4 From fecal samples 5.5 From water samples 6 DNA amplification and multiplexing 6.1 Principle of the PCR 6.2 Which polymerase to choose? 6.3 The standard PCR reaction 6.4 The importance of including appropriate controls 6.4.1 Extraction negative controls 6.4.2 PCR negative controls 6.4.3 PCR positive controls 6.4.4 Tagging system controls 6.4.5 Internal controls 6.5 PCR optimization 6.6 How to limit the risk of contamination? 6.7 Blocking oligonucleotides for reducing the amplification of undesirable sequences 6.8 How many PCR replicates? 6.9 Multiplexing several metabarcodes within the same PCR 6.10 Multiplexing many samples on the same sequencing lane 6.10.1 Overview of the problem 6.10.2 Strategy 1: single-step PCR with Illumina adapters 6.10.3 Strategy 2: two-step PCR with Illumina adapters 6.10.4 Strategy 3: single-step PCR with tagged primers 7 DNA sequencing 7.1 Overview of the first, second, and third generations of sequencing technologies 7.2 The Illumina technology 7.2.1 Library preparation 7.2.2 Flow cell, bridge PCR, and clusters 7.2.3 Sequencing by synthesis 7.2.4 Quality scores of the sequence reads 8 DNA metabarcoding data analysis 8.1 Basic sequence handling and curation 8.1.1 Sequencing quality 8.1.1.1 The pros and cons of read quality-based filtering 8.1.1.2 Quality trimming software 8.1.2 Paired-end read pairing 8.1.3 Sequence demultiplexing 8.1.4 Sequence dereplication 8.1.5 Rough sequence curation 8.2 Sequence classification 8.2.1 Taxonomic classification 8.2.2 Unsupervised classification 8.2.3 Chimera identification 8.3 Taking advantages of experimental controls 8.3.1 Filtering out potential contaminants 8.3.2 Removing dysfunctional PCRs 8.4 General considerations on ecological analyses 8.4.1 Sampling effort and representativeness 8.4.1.1 Evaluating representativeness of the sequencing per PCR 8.4.1.2 Evaluating representativeness at the sampling unit or site level 8.4.2 Handling samples with varying sequencing depth 8.4.3 Going further and adapting the ecological models to metabarcoding 9 Single-species detection 9.1 Principle of the quantitative PCR (qPCR) 9.1.1 Recording amplicon accumulation in real time via fluorescence measurement 9.1.2 The typical amplification curve 9.1.3 Quantification of target sequences with the Ct method 9.2 Design and testing of qPCR barcodes targeting a single species 9.2.1 1he problem of specificity 9.2.2 qPCR primers and probe 9.2.3 Candidate qPCR barcodes 9.3 Additional experimental considerations 9.3.1 General issues associated with sampling, extraction, and PCR amplification 9.3.2 The particular concerns of contamination and inhibition 10 Environmental DNA for functional diversity 10.1 Functional diversity from DNA metabarcoding 10.1.1 Functional inferences 10.1.2 Targeting active populations 10.2 Metagenomics and metatranscriptomics: sequencing more than a barcode 10.2.1 General sampling constraints 10.2.1.1 Optimization of the number of samples 10.2.1.2 Enrichment in target organisms 10.2.1.3 Enrichment in functional information 10.2.2 General molecular constraints 10.2.3 From sequences to functions 10.2.3.1 Assembling (or not) a metagenome 10.2.3.2 Sorting contigs or reads in broad categories 10.2.3.3 Extracting functional information via taxonomic inferences 10.2.3.4 Functional annotation of metagenomes 11 Some early landmark studies 11.1 Emergence of the concept of eDNA and first results on microorganisms 11.2 Examining metagenomes to explore the functional information carried by eDNA 11.3 Extension to macroorganisms 12 Freshwater ecosystems 12.1 Production, persistence, transport, and delectability of eDNA in freshwater ecosystems 12.1.1 Production 12.1.2 Persistence 12.1.3 Transport/ diffusion distance 12.1.4 Detectability 12.2 Macroinvertebrates 12.3 Diatoms and microeukaryotes 12.4 Aquatic plants 12.5 Fish, amphibians, and other vertebrates 12.5.1 Species detection 12.5.2 Biomass estimates 12.6 Are rivers conveyer belts of biodiversity information? 13 Marine environments 13.1 Environmental DNA cycle and transport in marine ecosystems 13.2 Marine microbial diversity 13.3 Environmental DNA for marine macroorganisms 14 Terrestrial ecosystems 14.1 Delectability, persistence, and mobility of eDNA in soil 14.2 Plant community characterization 14.3 Earthworm community characterization 14.4 Bacterial community or metagenome characterization 14.5 Multitaxa diversity surveys 1 5 Paleoenvironments 15.1 Lake sediments 15.1.1 Pollen, macrofossils, and DNA metabarcoding 15.1.2 Plants and mammals from Lake Anteme 15.1.3 Viability in the ice-free corridor in North America 15.2 Permafrost 15.2.1 Overview of the emergence of permafrost as a source of eDNA 15.2.2 Large-scale analysis of permafrost samples for reconstructing past plant communities 15.3 Archaeological midden material 15.3.1 Bulk archaeological fish bones from Madagascar 15.3.2 Midden from Greenland to assess past human diet 16 Host-associated microbiota 16.1 DNA dynamics 16.2 Early molecular-based works 16.3 Post-holobiont works 17 Diet analysis 17.1 Some seminal diet studies 17.1.1 Proof of concept-analyzing herbivore diet using next-generation sequencing 17.1.2 Assessing the efficiency of conservation actions in Bialowieza forest 17.1.3 Characterizing carnivore diet, or how to disentangle predator and prey eDNA 17.1.4 Analyzing an omnivorous diet, or integrating several diets in a single one 17.2 Methodological and experimental specificities of eDNA diet analyses 17.2.1 eDNAsources 17.2.1.1 Feces 17.2.1.2 Gut content 17.2.1.3 Whole body 17.2.2 Quantitative aspects 17.2.2.1 Relationship between the amount of ingested food and DNA quantity in the sample 17.2.2.2 Quantifying DNA with PCR and next-generation sequencing 17.2.2.3 Empirical correction of abundances 17.2.3 Diet as a sample of the existing biodiversity 17.2.4 Problematic diets 18 Analysis of bulk samples 18.1 What is a bulk sample? 18.2 Case studies 18.2.1 Bulk insect samples for biodiversity monitoring 18.2.2 Nematode diversity in tropical rainforest 18.2.3 Marine metawan diversity in benthic ecosystems 18.3 Metabarcoding markers for bulk samples 18.4 Alternative strategies 19 The future of eDNA metabarcoding 19.1 PCR-based approaches 19.1.1 Singl
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK B 100-21-94537
    Keywords: Volkswirtschaftliche Gesamtrechnung ; Volksvermögen
    Description / Table of Contents: Why are some nations wealthy and others poor? How did the wealthy nations become rich? What are the components of wealth? How should nations manage their wealth for the future? These are among the most important questions in economics. They are also impossible to answer without defining wealth, and understanding how it can be created, destroyed, stored, and managed. National Wealth: What is Missing, Why it Matters assembles a collection of high-quality contributions to define the key concepts and address the economic and policy issues around national wealth. It considers insights from economic history, addresses the impacts of the changes to national accounting, and teases out the policy implications for both rich and poor countries and the institutions within them. Using expert analysis and theoretically grounded empirical work, this book evaluates the progress that has been made in measuring national wealth, as well as the recent developments in theory and practice which show that the change in real wealth is an essential indicator of economic progress and future well-being. Measuring the change in real wealth answers the fundamental question: How much does the stream of future well-being of the population rise or fall as a result of policy actions today? Organized into four parts, National Wealth defines the key political and economic concepts of wealth. examines the history of wealth creation and destruction, and provides a detailed analysis of the individual components of wealth before finally examining the lessons for managing wealth for sustainable national prosperity.
    Type of Medium: Monograph available for loan
    Pages: xxiv, 468 Seiten , Illustrationen , 24 cm
    Edition: First edition
    ISBN: 9780198803720
    Language: English
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 11
    Call number: 9780191091926 (e-book)
    Type of Medium: 12
    Pages: 1 Online-Ressource (xviii, 231 Seiten) , Illustrationen, Diagramme
    Edition: Second edition
    ISBN: 978-0-19-109192-6 , 9780191091926 (e-book)
    Language: English
    Note: Contents Preface Introduction to the second edition What this book is about How the book is organized Why R? Updates Acknowledgements Chapter 1: Getting and Getting Acquainted with R 1.1 Getting started 1.2 Getting R 1.3 Getting R Studio 1.4 Let's play 1.5 Usin g R as a giant calculator (the size of your computer) 1.6 Your first script 1.7 Intermezzo remarks 1.8 Important functionality: packages 1.9 Getting help 1.10 A mini-practical - some in-depth play 1.11 Some more top tips and hints for a successful first (and more) R experience Appendix 1a Mini-tutorial solutions Appendix 1b File extensions and operating systems Chapter 2: Getting Your Data into R 2.1 Getting data ready for R 2.2 Getting your data into R 2.3 Checking that your data are your data 2.4 Basic troubleshooting while importing data 2.5 Summing up Appendix Advanced activity: dealing with untidy data Chapter 3: Data Management, Manipulation, and Exploration with dplyr 3.1 Summary statistics for each variable 3.2 dplyr verbs 3.3 Subsetting 3.4 Transforming 3.5 Sorting 3.6 Mini-summary and two top tips 3.7 Calculating summary statistics about groups of your data 3.8 What have you learned ... lots Appendix 3a Comparing classic methods and dplyr Appendix 3b Advanced dplyr Chapter 4: Visualizing Your Data 4.1 The first step in every data analysis — making a picture 4.2 ggplot2: a grammar for graphics 4.3 Box-and-whisker plots 4.4 Distributions: making histograms of numeric variables 4.5 Saving your graphs for presentation, documents, etc. 4.6 Closing remarks Chapter 5: Introducing Statistics in R 5.1 Getting started doing statistics in R 5.2 x2 contingency table analysis 5.3 Two-sample t-test 5.4 Introducing ... linear models 5.5 Simple linear regression 5.6 Analysis of variance: the one-way ANOVA 5.7 Wrapping up Appendix Getting packages not on CRAN Chapter 6: Advancing Your Statistics in R 6.1 Getting started with more advanced statistics 6.2 The two-way ANOVA 6.3 Analysis of covariance (ANCOVA) 6.4 Overview: an analysis workflow Chapter 7: Getting Started with Generalized Linear Models 7.1 Introduction 7.2 Counts and rates — Poisson GLMs 7.3 Doing it wrong 7.4 Doing it right — the Poisson GLM 7.5 When a Poisson GLM isn’t good for counts 7.6 Summary, and beyond simple Poisson regression Chapter 8: Pimping Your Plots: Scales and Themes in ggplot2 8.1 What you already know about graphs 8.2 Preparation 8.3 What you may want to customize 8.4 Axis labels, axis limits, and annotation 8.5 Scales 8.6 The theme 8.7 Summing up Chapter 9: Closing Remarks: Final Comments and Encouragement General Appendices Appendix 1 Data Sources Appendix 2 Further Reading Appendix 3 R Markdown Index
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 12
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 19.92583
    Description / Table of Contents: Origins -- Earth system -- Geologic time -- The great acceleration -- Anthropos -- Oikos -- Politikos -- Prometheus
    Type of Medium: Monograph available for loan
    Pages: xxii, 183 Seiten , Illustrationen, Diagramme, Karten
    Edition: First edition
    ISBN: 0198792980 , 9780198792987
    Series Statement: Very short introductions 558
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 13
    Call number: IASS 17.91113
    Description / Table of Contents: Part I. Introductory chapters -- Introduction: Scientific and political drivers for the Paris Agreement / Andreas Fischlin, Maria Ivanova -- Foundations for the Paris Agreement / Joanna Depledge, Andrew Higham -- Negotiating history of the Paris Agreement / Jane Bulmer, Meinhard Doelle, and Daniel Klein -- Central concepts in the Paris Agreement and how they evolved / Lavanya Rajamani and Emmanuel Guérin -- Legal form of the Paris Agreement and nature of its obligations / Ralph Bodle and Sebastian Oberthür -- Part II. Analysis of the provisions of the agreement -- Contextual provisions (Preamble and Article 1) / María Pía Carazo-- Objective (Article 2.1) / Halldór Thorgeirsson -- Guiding principles and general obligation (Article 2.2 and Article 3) / Lavanya Rajamani -- Mitigation (Article 4) / Harald Winkler -- Conserving and enhancing sinks and reservoirs of greenhouse gases, including forests (Article 5) / Antonio G M La Viña and Alaya de Leon -- Voluntary cooperation (Article 6) / Andrew Howard -- Adaptation (Article 7) / Irene Suárez Pérez and Angela Churie Kallhauge -- Loss and damage (Article 8) / Linda Siegele -- Climate finance (Article 9) / Jorge Gastelumendi and Inka Gnittke -- Technology development and transfer (Article 10) / Heleen de Conick and Ambuj Sagar -- Capacity-building (Article 11) / Crispin d'Auvergne and Matti Nummelin -- Education, training, public awareness participation and access to information (Article 12) / Jeniffer Hanna Collado -- Transparency (Article 13) / Yamide Dagnet and Kelly Levin -- Global stocktake (Article 14) / Jürgen Friedrich -- Facilitating implementation and promoting compliance (Article 15) / Yamide Dagnet and Eliza Northrop -- Institutional arrangements and final clauses (Articles 16-29) / Christina Voigt -- Part III. Concluding reflections -- Assessment of strengths and weaknesses / Meinhard Doelle -- Implications for public international law : initial considerations / María Pía Carazo -- Epilogue: Making the transition from an international agreement to a new epoch of human prosperity in one generation / Andrew Higham
    Description / Table of Contents: The most important climate agreement in history, the Paris Agreement on Climate Change represents the commitment of the nations of the world to address and curb climate change. Signed in December 2015, it will come into force on the 4th November, and efforts toward fulfilling its ambitious goals are already under way. The Paris Climate Agreement: Commentary and Analysis combines a comprehensive legal appraisal and critique of the new Agreement with a practical and structured commentary to all its Articles. Part I discusses the general context for the Paris Agreement, detailing the scientific, political, and social drivers behind it, providing an overview of the pre-existing regime, and tracking the history of the negotiations. It examines the evolution of key concepts such as common but differentiated responsibilities, and analyses the legal form of the Agreement and the nature of its provisions. Part II comprises individual chapters on each Article of the Agreement, with detailed commentary of the provisions which highlights central aspects from the negotiating history and the legal nature of the obligations. It describes the institutional arrangements and considerations for national implementation, providing practical advice and prospects for future development. Part III reflects on the Paris Agreement as a whole: its strengths and weaknesses, its potential for further development, and its relationship with other areas of public international law and governance. The book is an invaluable resource for academics and practitioners, policy makers, and actors in the private sector and civil society, as they negotiate the implementation of the Agreement in domestic law and policy
    Type of Medium: Monograph available for loan
    Pages: xxxii, 435 Seiten , Illustrationen, Diagramme (teilweise farbig) , 25 cm
    Edition: First edition
    ISBN: 9780198803768 , 9780198789338
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 14
    Call number: PIK C 111-18-91861
    Type of Medium: Monograph available for loan
    Pages: xxxiii, 415 Seiten
    Edition: First edition, Impression: 1
    ISBN: 9780198795919 (hbk.)
    Language: English
    Note: Contents: INTRODUCTION ; 1: Ius Constitutionale Commune in América Latina: A Regional Approach to Transformative Constitutionalism ; PART I: FRAMEWORK ; 2: Ius Constitutionale Commune in América Latina: A Conceptual Clarification ; 3: Ius Constitutionale Commune in América Latina: Context, Challenges, and Perspectives ; 4: The Struggle for Rights and the Ius Constitutionale Commune ; 5: A Multidimensional Approach to Equality in the Inter-American Context: Redistribution, Recognition, and Participatory Parity ; 6: Transformative Constitutionalism and the Global South: The View from South Africa ; 7: Preserving the Acquis of Transformative Constitutionalism in Times of Constitutional Crisis: Lessons from the Hungarian Case ; PART II: THE DOMESTIC ELEMENT ; 8: The Mexican Constitution of 1917: An Early Example of Transformative Constitutionalism ; 9: The Amparo as an Instrument of Ius Constitutionale Commune ; 10: The Presidential System in Latin America: A Hallmark and Challenge to a Latin American Ius Constitutionale Commune ; 11: The Roberto Gargarella ; 12: The Block of Constitutionality as the Doctrinal Pivot of a Ius Commune ; 13: Inter-Americanization: Its Legal Bases and Political Impact ; PART III: THE INTER-AMERICAN ELEMENT ; 14: The Inter-American System of Human Rights: Essential Features ; 15: The American Human Rights Navigation: Toward a Ius Commune ; 16: The Conventionality Control as a Core Mechanism of the Ius Constitutionale Commune ; 17: The Transformative Dimension of Inter-American Jurisprudence ; 18: The Impact of Inter-American Judgments by Institutional Empowerment ; 19: The Added Value of the Inter-American Human Rights System: Comparative Thoughts
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 15
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 16.90080
    Description / Table of Contents: Exploring the politics of inclusive development : towards a new conceptual approach / Sam Hickey, Kunal Sen, and Badru Bukenya -- The political determinants of economic growth : an analytical review / Kunal Sen -- The politics of what works for the poor in public expenditure and taxation / Paul Mosley -- Governing natural resources for inclusive development / Anthony Bebbington -- The politics of what works in service delivery / Claire Mcloughlin -- Political factors in the growth of social assistance / Armando Barrientos and Sony Pellissery -- The politics and process of rule of law systems in developmental states / Deval Desai and Michael Woolcock -- The gendered politics of securing inclusive development / Sohela Nazneen and Simeen Mahmud -- Ethnicity, state capacity, and development : reconsidering causal connections / Prerna Singh and Matthias vom Hau -- The politics of aid revisited : a review of evidence on state capacity and elite commitment / Arjan de Haan and Ward Warmerdam -- China in Africa : impacts and prospects for accountable development / Giles Mohan
    Type of Medium: Monograph available for loan
    Pages: XX, 396 S. , graph. Darst.
    Edition: 1. ed.
    ISBN: 9780198722564 (hbk.)
    Language: English
    Note: Exploring the politics of inclusive development : towards a new conceptual approach / Sam Hickey, Kunal Sen, and Badru BukenyaThe political determinants of economic growth : an analytical review / Kunal Sen -- The politics of what works for the poor in public expenditure and taxation / Paul Mosley -- Governing natural resources for inclusive development / Anthony Bebbington -- The politics of what works in service delivery / Claire Mcloughlin -- Political factors in the growth of social assistance / Armando Barrientos and Sony Pellissery -- The politics and process of rule of law systems in developmental states / Deval Desai and Michael Woolcock -- The gendered politics of securing inclusive development / Sohela Nazneen and Simeen Mahmud -- Ethnicity, state capacity, and development : reconsidering causal connections / Prerna Singh and Matthias vom Hau -- The politics of aid revisited : a review of evidence on state capacity and elite commitment / Arjan de Haan and Ward Warmerdam -- China in Africa : impacts and prospects for accountable development / Giles Mohan..
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 16
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 17.91265
    Description / Table of Contents: A critical reflection on ICTs and 'development' -- Understanding the technologies -- The international policy arena: ICTs and Internet governance -- Partnerships in ICT4D: rhetoric and reality -- From regulation to facilitation: the role of ICT and telecommunication regulators in a converging world -- Reflections on the dark side of ICT4D -- ...In the interests of the poorest and most marginalized
    Description / Table of Contents: This book draws on the author's 15 years of practical and conceptual experience of research and practice in delivering development initiatives that effectively use information and communication technologies (ICTs) to empower some of the world's poorest and most marginalized people
    Type of Medium: Monograph available for loan
    Pages: viii, 226 Seiten , Illustrationen
    ISBN: 9780198795292
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 17
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 18.91713
    Type of Medium: Monograph available for loan
    Pages: xxi, 410 Seiten
    Edition: First published in paperback
    ISBN: 9780198803065 , 0198803060 , 9780198724506 , 0198724500
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 18
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK N 072-18-91858
    Description / Table of Contents: This textbook, by three experts in the field, provides a comprehensive overview of international climate change law. Climate change is one of the fundamental challenges facing the world today, and is the cause of significant international concern. In response, states have created an international climate regime. The treaties that comprise the regime - the 1992 United Nations Framework Convention on Climate Change, the 1997 Kyoto Protocol and the 2015 Paris Agreement establish a system of governance to address climate change and its impacts. This book provides a clear analytical guide to the climate regime, as well as other relevant international legal rules. The book begins by locating international climate change law within the broader context of international law and international environmental law. It considers the evolution of the international climate change regime, and the process of law-making that has led to it. It examines the key provisions of the Framework Convention, the Kyoto Protocol and the Paris Agreement. It analyses the principles and obligations that underpin the climate regime, as well as the elaborate institutional and governance architecture that has been created at successive international conferences to develop commitments and promote transparency and compliance. The final two chapters address the polycentric nature of international climate change law, as well as the intersections of international climate change law with other areas of international regulation. This book is an essential introduction to international climate change law for students, scholars and negotiators.--
    Type of Medium: Monograph available for loan
    Pages: xxxix, 374 Seiten
    Edition: First edition, Impression: 3
    ISBN: 9780199664306 , 9780199664290
    Language: English
    Note: Contents: 1: Introduction ; 2: Climate Change and International Law ; 3: Treaty-Based Lawmaking: Rules, Tools and Techniques ; 4: Evolution of the United Nations Climate Regime ; 5: The Framework Convention on Climate Change ; 6: Kyoto Protocol ; 7: Paris Agreement ; 8: Climate Governance beyond the United Nations Climate Regime ; 9: International Climate Change Law & Other Areas of International Regulation ; 10: Conclusion
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 19
    Call number: IASS 20.95234
    Description / Table of Contents: Deliberative democracy has challenged two widely-accepted nostrums about democratic politics: that people lack the capacities for effective self-government; and that democratic procedures are arbitrary and do not reflect popular will; indeed, that the idea of popular will is itself illusory. On the contrary, deliberative democrats have shown that people are capable of being sophisticated, creative problem solvers, given the right opportunities in the right kinds of democratic institutions. But deliberative empirical research has its own problems. In this text two leading deliberative scholars review decades of that research and reveal three important issues.
    Type of Medium: Monograph available for loan
    Pages: ix, 189 Seiten , Illustrations
    ISBN: 9780199672196
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 20
    Call number: IASS 20.95233
    Description / Table of Contents: Deliberative democracy has been the main game in contemporary political theory for two decades and has grown enormously in size and importance in political science and many other disciplines, and in political practice. The Oxford Handbook of Deliberative Democracy takes stock of deliberative democracy as a research field, as well as exploring and creating links with multiple disciplines and policy practice around the globe. It provides a concise history of deliberative ideals in political thought while also discussing their philosophical origins. It locates deliberation in a political system with different spaces, publics, and venues, including parliament and courts but also governance networks, protests, mini-publics, old and new media, and everyday talk. It documents the intersections of deliberative ideals with contemporary political theory.
    Type of Medium: Monograph available for loan
    Pages: xxi, 948 Seiten
    ISBN: 9780198747369 , 9780191809699
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 21
    Call number: IASS 17.90838
    Type of Medium: Monograph available for loan
    Pages: xxiii, 821 Seiten , Illustrationen
    Edition: First edition
    ISBN: 9780199684601
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 22
    Call number: AWI G1-17-90601
    Description / Table of Contents: This innovative study presents concepts and problems in soil physics, and provides solutions using original computer programs. It provides a close examination of physical environments of soil, including an analysis of the movement of heat, water and gases. The authors employ the programming language Python, which is now widely used for numerical problem solving in the sciences. In contrast to the majority of the literature on soil physics, this text focuses on solving, not deriving, differential equations for transport. Using numerical procedures to solve differential equations allows the solution of quite difficult problems with fairly simple mathematical tools. Numerical methods convert differential into algebraic equations, which can be solved using conventional methods of linear algebra. Each chapter introduces a soil physics concept, and proceeds to develop computer programs to solve the equations and illustrate the points made in the discussion. Problems at the end of each chapter help the reader practise using the concepts introduced. The text is suitable for advanced undergraduates, graduates and researchers of soil physics. It employs an open source philosophy where computer code is presented, explained and discussed, and provides the reader with a full understanding of the solutions. Once mastered, the code can be adapted and expanded for the user's own models, fostering further developments. The Python tools provide a simple syntax, Object Oriented Programming techniques, powerful mathematical and numerical tools, and a user friendly environment.
    Type of Medium: Monograph available for loan
    Pages: X, 449 Seiten , Illustrationen
    Edition: First edition
    ISBN: 0199683093 , 9780199683093
    Language: English
    Note: Contents: 1 Introduction. - 2 Basic Physical Properties of Soil. - 2.1 Geometry of the Soil Matrix. - 2.2 Soil Structure. - 2.3 Fractal Geometry. - 2.4 Geometry of the Pore Space. - 2.5 Specific Surface Area. - 2.6 Averaging. - 2.7 Bulk Density, Water Content and Porosity. - 2.8 Relationships between Variables. - 2.9 Typical Values of Physical Properties. - 2.10 Volumes and Volumetric Fractions for a Soil Prism. - 2.11 Soil Solid Phase. - 2.12 Soil Texture. - 2.13 Sedimentation Law. - 2.14 Exercises. - 3 Soil Gas Phase and Gas Diffusion. - 3.1 Transport Equations. - 3.2 The Diffiisivity of Gases in Soil. - 3.3 Computing Gas Concentrations. - 3.4 Simulating One-Dimensional Steady-State Oxygen Diffusion in a Soil Profile. - 3.5 Numerical Implementation. - 3.6 Exercises. - 4 Soil Temperature and Heat Flow. - 4.1 Differential Equations for Heat Conduction. - 4.2 Soil Temperature Data. - 4.3 Numerical Solution of the Heat Flow Equation. - 4.4 Soil Thermal Properties. - 4.5 Numerical Implementation. - 4.6 Exercises. - 5 Soil Liquid Phase and Soil-Water Interactions. - 5.1 Properties of Water. - 5.2 Soil Water Potential. - 5.3 Water Potential-Water Content Relations. - 5.4 Liquid- and Vapour-Phase Equilibrium. - 5.5 Exercises. - 6 Steady-State Water Flow and Hydraulic Conductivity. - 6.1 Forces on Water in Porous Media. - 6.2 Water Flow in Saturated Soils. - 6.3 Saturated Hydraulic Conductivity. - 6.4 Unsaturated Hydraulic Conductivity. - 6.5 Exercises. - 7 Variation in Soil Properties. - 7.1 Frequency Distributions. - 7.2 Probability Density Functions. - 7.3 Transformations. - 7.4 Spatial Correlation. - 7.5 Approaches to Stochastic Modelling. - 7.6 Numerical Implementation. - 7.7 Exercises. - 8 Transient Water Flow. - 8.1 Mass Conservation Equation. - 8.2 Water Flow. - 8.3 Infiltration. - 8.4 Numerical Simulation of Infiltration. - 8.5 Numerical Implementation. - 8.6 Exercises. - 9 Triangulated Irregular Network. - 9.1 Digital Terrain Model. - 9.2 Triangulated Irregular Network. - 9.3 Numerical Implementation. - 9.4 Main. - 9.5 Triangulation. - 9.6 GIS Functions. - 9.7 Boundary. - 9.8 Geometrical Properties of Triangles. - 9.9 Delaunay Triangulation. - 9.10 Refinement. - 9.11 Utilities. - 9.12 Visualization. - 9.13 Exercise. - 10 Water Flow in Three Dimensions. - 10.1 Governing Equations. - 10.2 Numerical Formulation. - 10.3 Coupling Surface and Subsurface Flow. - 10.4 Numerical Implementation. - 10.5 Simulation. - 10.6 Visualization and Results. - 10.7 Exercises. - 11 Evaporation. - 11.1 General Concepts. - 11.2 Simultaneous Transport of Liquid and Vapour in Isothermal Soil. - 11.3 Modelling evaporation. - 11.4 Numerical Implementation. - 11.5 Exercises. - 12 Modelling Coupled Transport. - 12.1 Transport Equations. - 12.2 Partial Differential Equations. - 12.3 Surface Boundary Conditions. - 12.4 Numerical Implementation. - 12.5 Exercises. - 13 Solute Transport in Soils. - 13.1 Mass Flow. - 13.2 Diffusion. - 13.3 Hydrodynamic Dispersion. - 13.4 Advection-Dispersion Equation. - 13.5 Solute-Soil Interaction. - 13.6 Sources and Sinks of Solutes. - 13.7 Analytical Solutions. - 13.8 Numerical Solution. - 13.9 Numerical Implementation. - 13.10 Exercises. - 14 Transpiration and Plant-Water Relations. - 14.1 Soil Water Content and Soil Water Potential under a Vegetated Surface. - 14.2 General Features of Water Flow in the SPAC. - 14.3 Resistances to Water Flow within the Plant. - 14.4 Effect of Environment on Plant Resistance. - 14.5 Detailed Consideration of Soil and Root Resistances. - 14.6 Numerical Implementation. - 14.7 Exercises. - 15 Atmospheric Boundary Conditions. - 15.1 Radiation Balance at the Exchange Surface. - 15.2 Boundary-Layer Conductance for Heat and Water Vapour. - 15.3 Evapotranspiration and the Penman-Monteith Equation. - 15.4 Partitioning of Evapotranspiration. - 15.5 Exercise. - Appendix A: Basic Concepts and Examples of Python Programming. - A.1 Basic Python. - A.2 Basic Concepts of Computer Programming. - A.3 Data Representation: Variables. - A.4 Comments Rules and Indendation. - A.5 Arithmetic Expression. - A.6 Functions. - A.7 Flow Control. - A.8 File Input and Output. - A.9 Arrays. - A.10 Reading Date Time. - A.11 Object-Oriented Programming in Python. - A.12 Output and Visualization. - A.13 Exercises. - Appendix B: Computational Tools. - B.1 Numerical Differentiation. - B.2 Numerical Integration. - B.3 Linear Algebra. - B.4 Exercises. - List of Symbols. - List of Python Variables. - List of Python Projects. - References. - Index.
    Location: AWI Reading room
    Branch Library: AWI Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 23
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK N 071-19-92127
    Type of Medium: Monograph available for loan
    Pages: xvi, 260 Seiten , Illustrationen, Diagramme
    Edition: First edition
    ISBN: 9780198813248
    Language: English
    Note: Contents: : 1: Climate Justice: Integrating Economics and Philosophy, Ravi Kanbur and Henry Shue ; 2: Poor People on the Front Line: The Impacts of Climate Change on Poverty in 2030, Julie Rozenberg and Stephane Hallegatte ; 3: Governing the Commons to Promote Global Justice: Climate Change Mitigation and Rent Taxation, Michael Jakob, Ottmar Edenhofer, Ulrike Kornek, Dominic Lenzi, and Jan Minx. ; 4: Equity Implications of the COP21 Intended Nationally Determined Contributions to Reduce Greenhouse Gas Emissions, Adam Rose, Dan Wei, and Antonio Bento ; 5: Climate Change and Inequity: How to Think about Inequities in Different Dimensions, Nicole Hassoun and Anders Herlitz ; 6: Climate Change and Economic Self-Interest, Julie Nelson ; 7: Noncompliers' Duties, Anja Karnein ; 8: Divest-Invest: A Moral Case for Fossil Fuel Divestment, Alex Lenferna ; 9: Justice and Posterity, Simon Caney ; 10: Discounting and the Paradox of the Indefinitely Postponed Splurge, Matthew Rendall ; 11: The Controllability Precautionary Principle: Justification of a Climate Policy Goal under Uncertainty, Eugen Pissarskoi ; 12: The Social Cost of Carbon from Theory to Trump, Paul Kelleher ; 13: Long-term Climate Justice, John Nolt ; Appendix: Declaration on Climate Justice
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 24
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK E 821-19-92908
    Description / Table of Contents: 'Mass Exodus' is the first serious historical and sociological study of Catholic lapsation and disaffiliation. Drawing on a wide range of theological, historical and sociological sources, Bullivant offers a comparative study of secularization across two famously contrasting religious cultures: Britain and the USA.
    Type of Medium: Monograph available for loan
    Pages: VIII, 309 Seiten , Diagramme
    Edition: First edition Impression: 6
    ISBN: 9780198837947
    Language: English
    Note: Contents: 1: Looking Foolish ; 2: The Demographics of Disaffiliation ; 3: Why They Say They Leave ; 4: The Night Before ; 5: Gaudium et spes, luctus et angor ; 6: The Morning After ; 7: Unto the Third and Fourth Generations ; Epilogue: Did the Council Fail?
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 25
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: PIK N 401-22-94782
    Description / Table of Contents: The concept of the Earth's atmosphere, biosphere, oceans, soil, and rocks operating as a closely interacting system has rapidly gained ground in science. This new field, involving geographers, geologists, biologists, oceanographers, and atmospheric physicists, is known as Earth system science. This introductory text considers how a world in which humans could evolve was created; how, as a species, we are now reshaping that world; and what a sustainable future for humanity within the Earth system might look like. Drawing on elements of geology, biology, chemistry, physics, and mathematics, it also asks whether Earth system science can help guide us onto a sustainable course before we alter the Earth system to the point where we destroy ourselves and our current civilisation.--
    Type of Medium: Monograph available for loan
    Pages: 153 Seiten , Diagramme
    ISBN: 978-0-19-871887-1
    Language: English
    Location: A 18 - must be ordered
    Branch Library: PIK Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 26
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: 18 / M 21.94608
    Type of Medium: Monograph available for loan
    Pages: xi, 780 Seiten , Diagramme , 191 x 254 x 48
    Edition: Second edition
    ISBN: 9780198805090
    URL: Cover
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 27
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: IASS 16.90594
    Type of Medium: Monograph available for loan
    Pages: ix, 204 Seiten , Karten
    ISBN: 9780198747338
    Series Statement: SIPRI research report No. 25
    Language: English
    Branch Library: RIFS Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 28
    Monograph available for loan
    Monograph available for loan
    Oxford : Oxford University Press
    Call number: M 16.89793
    Description / Table of Contents: Plate tectonics caused a revolution in our understanding of the Earth. It has aided our understanding of why earthquakes and volcanoes are found in distinct locations, how oceans form and disappear, and how mountain ranges were built. In this volume, Peter Molnar explores the history and significance of plate tectonics
    Description / Table of Contents: Plate tectonics caused a revolution in our understanding of the Earth. It has aided our understanding of why earthquakes and volcanoes are found in distinct locations, how oceans form and disappear, and how mountain ranges were built. In this volume, Peter Molnar explores the history and significance of plate tectonics. --
    Type of Medium: Monograph available for loan
    Pages: xvii, 136 p , Ill., maps , 18 cm
    Edition: 1st ed
    ISBN: 9780198728269 , 0198728263
    Series Statement: Very short introductions 425
    Language: English
    Note: 1. The basic idea -- 2. Seafloor spreading and magnetic anomalies -- 3. Fracture zones and transform faults -- 4. Subduction of oceanic lithosphere -- 5. Rigid plates of lithosphere -- 6. Tectonics of continents -- 7. From whence to whither?
    Branch Library: GFZ Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 29
    Unknown
    Oxford : Oxford University Press
    Keywords: change agents ; campaigners ; lobbyists ; officials ; public services ; activists ; social change ; political change ; NGOs
    Description / Table of Contents: Human society is full of would-be ‘change agents’, a restless mix of campaigners, lobbyists, and officials, both individuals and organizations, set on transforming the world. They want to improve public services, reform laws and regulations, guarantee human rights, get a fairer deal for those on the sharp end, achieve greater recognition for any number of issues, or simply be treated with respect. Striking then, that not many universities have a Department of Change Studies, to which social activists can turn for advice and inspiration. Instead, scholarly discussions of change are fragmented with few conversations crossing disciplinary boundaries, rarely making it onto the radars of those actively seeking change. This book aims to bridge the gap between academia and practice, bringing together the best research from a range of academic disciplines and the evolving practical understanding of activists to explore the topic of social and political change. Drawing on many first-hand examples from the global experience of Oxfam, one of the world’s largest social justice NGOs, as well as insights gleaned from studying and working on international development, it tests ideas and offers the latest thinking on what works to achieve progressive change. Table of Contents Foreword, Ha-Joon Chang Introduction Part 1. A Power and Systems Approach 1: Systems Thinking Changes Everything 2: Power Lies at the Heart of Change 3: Shifts in Social Norms often Underpin Change Case Study: The Chiquitanos of Bolivia Part 2. Institutions and the Importance of History Introduction to Section 2 4: How States Evolve 5: The Machinery of Law 6: Accountability, Political Parties,and the Media 7: How the International System Shapes Change 8: Transnational Corporations as Drivers and Targets of Change Case Study: The December 2015 Paris Agreement on Climate Change Part 3. Activists Introduction to Section 3 9: Citizen Activism and Civil Society 10: Leaders and leadership 11: The Power of Advocacy 12: A Power and Systems Approach to Making Change Happen In Conclusion
    Pages: Online-Ressource (XVIII, 268 Seiten)
    ISBN: 9780198785392
    Language: English
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 30
    Keywords: development ; capability ; reform ; government ; poverty ; services ; policy ; PDIA ; politics ; foreign aid
    Description / Table of Contents: Governments play a major role in the development process, and constantly introduce reforms and policies to achieve developmental objectives. Many of these interventions have limited impact, however; schools get built but kids don’t learn, IT systems are introduced but not used, plans are written but not implemented. These achievement deficiencies reveal gaps in capabilities, and weaknesses in the process of building state capability. This book addresses these weaknesses and gaps. It starts by providing evidence of the capability shortfalls that currently exist in many countries, showing that many governments lack basic capacities even after decades of reforms and capacity-building efforts. The book then analyzes this evidence, identifying capability traps that hold many governments back—particularly related to isomorphic mimicry (where governments copy best practice solutions from other countries that make them look more capable even if they are not more capable) and premature load bearing (where governments adopt new mechanisms that they cannot actually make work, given weak extant capacities). The book then describes a process that governments can use to escape these capability traps. Called PDIA (problem-driven iterative adaptation), this process empowers people working in governments to find and fit solutions to the problems they face. The discussion about this process is structured in a practical manner so that readers can actually apply tools and ideas to the capability challenges they face in their own contexts. These applications will help readers devise policies and reforms that have more impact than those of the past. | Table of Contents Introduction: "The Long Voyage of Discovery" Part 1. The Problem: The Creation and Consolidation of Capability Traps 1: The Big Stuck in State Capability 2: Looking Like a State: The Seduction of Isomorphic Mimicry 3: Premature Load Bearing: Doing Too Much Too Soon 4: Capability for Policy Implementation 5: What Type of Organization Capability is Needed? Part 2. A Strategy for Action: Problem-Driven Iterative Adaptation (PDIA) 6: The Challenge of Building (Real) State Capability for Implementation 7: Doing Problem-Driven Work 8: The Searchframe: Doing Experimental Iterations 9: Managing Your Authorizing Environment 10: Building State Capability at Scale Through Groups
    Pages: Online-Ressource (XII, 257 pages) , 27 Figures, 25 Tables, 6 Boxes
    ISBN: 9780198807186
    Language: English
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 31
    Unknown
    Oxford : Oxford University Press
    Keywords: Natural disaster ; Extreme event ; Pandemic ; Disaster risk finance ; Time inconsistency ; Commitment device ; Planning ; Behavioural psychology ; Politics of disaster relief ; Risk management
    Description / Table of Contents: In recent years, typhoons have struck the Philippines and Vanuatu; earthquakes have rocked Haiti, Pakistan, and Nepal; floods have swept through Pakistan and Mozambique; droughts have hit Ethiopia, Kenya, and Somalia; and more. All led to loss of life and loss of livelihoods, and recovery will take years. One of the likely effects of climate change is to increase the likelihood of the type of extreme weather events that seems to cause these disasters. But do extreme events have to turn into disasters with huge loss of life and suffering? Dull Disasters? harnesses lessons from finance, political science, economics, psychology, and the natural sciences to show how countries and their partners can be far better prepared to deal with disasters. The insights can lead to practical ways in which governments, civil society, private firms, and international organizations can work together to reduce the risks to people and economies when a disaster looms. Responses to disasters then become less emotional, less political, less headline-grabbing, and more business as usual and effective. The book takes the reader through a range of solutions that have been implemented around the world to respond to disasters. It gives an overview of the evidence on what works and what doesn't and it examines the crucial issue of disaster risk financing. Building on the latest evidence, it presents a set of lessons and principles to guide future thinking, research, and practice in this area.
    Pages: Online-Ressource (XIV, 139 Seiten)
    ISBN: 9780198785576
    Language: English
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 32
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 33
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 34
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 35
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 36
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 37
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 38
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 39
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 40
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 41
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 42
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 43
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 44
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 45
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 46
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 47
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 48
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 49
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 50
    Publication Date: 2021-03-29
    Keywords: Landsat ETM+; Sea surface temperature; Submarine groundwater discharge; Groundwater resource ; 551 ; Earth Sciences; Geology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 51
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 52
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 53
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 54
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 55
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 56
    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
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 57
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 58
    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
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 59
    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
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 60
    Publication Date: 2021-03-29
    Keywords: Eastern Sierras Pampeanas; Provenance; Tectonic setting; Gondwana margin; Geodynamic evolution ; 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 61
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 62
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 63
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 64
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 65
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 66
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 67
    Publication Date: 2021-03-29
    Keywords: Mud mound; Peloids; Automicrites; Micro-framework; Carboniferous; Spain ; 551 ; Earth Sciences; Ecology; Paleontology; Geochemistry ; Biogeosciences; Sedimentology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 68
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 69
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 70
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 71
    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
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 72
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 73
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 74
    facet.materialart.
    Unknown
    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
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 75
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 76
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 77
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 78
    Publication Date: 2021-03-29
    Keywords: 551 ; Earth Sciences; Geology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 79
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 80
    Publication Date: 2021-03-29
    Keywords: Wadi Kafrein; Groundwater modelling; Model calibration; Arid and semiarid areas ; 551 ; Earth Sciences; Geology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 81
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 82
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 83
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 84
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 85
    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
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 86
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 87
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 88
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 89
    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
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 90
    Publication Date: 2021-03-29
    Keywords: 551 ; Earth Sciences; Geophysics/Geodesy; Geology
    Language: English
    Type: article , publishedVersion
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...