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  • 1
    Monograph available for loan
    Monograph available for loan
    London : Geological Society
    Associated volumes
    Call number: 9/M 07.0052
    In: Geological Society memoir
    Description / Table of Contents: Europe provides an outstanding field laboratory for studying lithospheric processes through time, for tracing the tectonic evolution of crust and mantle from the present far back into the early Precambrian. Two things are particularly striking: the importance of plate tectonics during the Phanerozoic and through the Proterozic into the Archeaen, and the significance of tectonic inheritance, older structures and rheologies guiding the younger evolution. 'European Lithosphere Dynamics' grew out of a major European Science Foundation programme, EUROPROBE, with participation of many hundreds of Earth scientists from all over Europe. The main research activities focused on specific target areas and involved integration of geological, geophysical and geochemical methods. Defining surface-depth relationships was a prerequisite for interpretation of the processes, present and past, responsible for the formation of the lithosphere. This Memoir addresses the major features of the European lithosphere and is aimed at giving the reader an overview of their development and growth during three billion years of Earth history.
    Type of Medium: Monograph available for loan
    ISBN: 1862392129
    Series Statement: Geological Society memoir 32
    Classification:
    Regional Geology
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 339 (May 2007), p. 50-58 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Based on the concept of the interaction between a magnetic and electric field, a magneticfield was suppressed on the Electrochemical Machining (ECM) setup to improve the copyingaccuracy of ECM. Mathematical modeling and finite element modeling of the magnetic field wasalso developed using ANSYS to study the influence of permanent magnet design on the ECMprocess. The results indicate that by introducing the magnetic field the threshold of electrochemicalreaction is decreased and the tracks of ions become complicated which makes the chemical reactionmore extensive and more uniform in the inter-electrode gap. The distribution of magnetic field inthe gap helps to improve the machining accuracy and the process efficiency, when the permanentmagnet is at the end of the electrodes. Experiments have been carried out to validate the results offinite element analysis and the effect of a magnetic field on the ECM process is discussed
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 450 (2007), S. 1071-1074 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The process of continental break-up provides a large-scale experiment that can be used to test causal relations between plate tectonics and the dynamics of the Earth’s deep mantle. Detailed diagnostic information on the timing and dynamics of such events, which are not resolved by plate ...
    Type of Medium: Electronic Resource
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  • 4
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    In:  Geological Society Special Publication 250: 185-194.
    Publication Date: 2007-10-08
    Description: The natural resources of developing countries, particularly in a post-conflict situation, are the key to creating wealth, getting people back to work, and to improving security. However, public sector institutions like geological surveys, and government departments such as mines, energy and water ministries often need help in their vision to promote and sustainably develop their natural capital, as well as to protect the lives and livelihoods of people affected by development. Some have few physical resources, and a poorly trained and motivated workforce; others may be housed in buildings that have borne the brunt of prolonged fighting and a long period of neglect. In many developing countries, such institutions have a rather inward-facing colonial-style civil service culture that lacks the ability to liaise and engage with modern multinational investors. Unfortunately, donor organizations that seek to build the capacities of institutions do not build sufficient project ownership' and fail to incorporate into their plans the culture of the organization, or fail to integrate parts of multidisciplinary projects. Development projects supported are often perceived to reflect donor agendas rather than the needs of the recipient institution. Using experience in a number of developing country and post-conflict contexts, a methodology to plan and integrate capacity building has been developed, to help employees and management, and donor organizations, deal with these difficulties. Through training tuned to business need, institutions will develop appropriate IT and communication skills, while at the same time developing corporate understanding of the private sector, which is needed to interact successfully with it. Stakeholder analysis gauges the organization's strengths and weaknesses and ensures coordination of aid, which takes account of the local social, political and business context. The methodology will also establish a system allowing regular cyclical business/training review, so that the institutions can adapt to further change.
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  • 5
    Publication Date: 2007-10-08
    Description: excerptSustainable development requires an appropriate abalance between social, economic and environme ntal well-being, now and for the future. Since most minerals are non-renewalble resources, sustainability of supply can only be addressed by extracting, processing and distributing raw in the least environmentally damaging ways, using minerals wisely, and recycling as much as possible. However, there also is significant scope for inproved sustainability in terms of economic and social aspects. Minerals are essential raw materials but high-quality deposits havem become depleted in many developed countries. These countries have increasingly turned to developing countries for supplies and it is in these that modt high-quality untapped futre prospect remain. for countries with limited export opportunities, minerals are often a mainstay of the domestic economy. However, low selling prices may reflect limited environmental regulation and low wages. This can lead to charges that the rich countries are exporting their environmental damage to, andexploiting, poorer countries. As more countries develop, the global demand for supplies of essential raw materials increases, and resources will be depleted more quickly. Therefore, sustainable minerals supply from the developing countries is an important global issue. In this Special Report, general aspects of sustainable minerals operations in the developing world are reviewed by Petterson et al., Hobbs, and Richards while the remaining papers consider specific issues in more detail. Hobbs, in particular, emphasizes the need to give proper weight each to human capital, financial capital, manufactured capital, and environmental capital in any full analysis as a context for sustainable development and effective.
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  • 6
    Publication Date: 2007-10-08
    Description: The technique of kriging is widely known to be limited by its assumption of stationarity, and performs poorly when the data involve localized effects such as discontinuities or nonlinear trends. A Bayesian partition model (BPM) is compared with results from ordinary kriging for various synthetic discontinuous 1-D functions, as well as for 1986 precipitation data from Switzerland. This latter dataset has been analysed during a comparison of spatial interpolation techniques, and has been interpreted as a stationary distribution and one thus suited to kriging. The results demonstrate that the BPM outperformed kriging in all of the datasets compared (when tested for prediction accuracy at a number of validation points), with improvements by a factor of up to 6 for the synthetic functions.
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  • 7
    Publication Date: 2007-10-08
    Description: A special thematic conference was organized at the Geological Society of London in November 2003, aimed at bringing together experts in minerals development in the Developing Countries. Representatives of many aspects of mineral development attended, including mining companies, governments, aid agencies, non-governmental organizations (NGOs), academics and consultants. The opening address to the conference is given in this paper. Mining is an ancient human activity developed through essential societal demand. As society and technology have developed, they have inevitably become ever-more materials hungry. This demand will remain for the foreseeable future. Many areas of the Developed World have depleted high-grade mineral deposits, and remaining resources are subject to strong environmental constraints. This increases pressure on the Developing World to generate the mineral commodities upon which society depends. Mineral resources are also a potential source of capital over which Developing Countries can have their own decision-making powers (in contrast to aid money for example). Sustainable mineral development is all about balance. Achieving the dynamic balance between supply and demand, equitable capital distribution, good financial and environmental management and governance, economics, and social stability is the challenge the world faces in the twenty-first century and beyond.
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  • 8
    Publication Date: 2007-10-08
    Description: New observations of fracture corridors 〉 150 m tall and planes of bedding-parallel slip are integrated with sedimentological descriptions of the Asmari Formation to understand the main controls on the development of fractures in the Zagros Mountains of Iran. In the Kuh-e Pahn, fold-related fracture corridors are axis-parallel (NW-SE) and occur in the crest of the anticline. They form by neutral surface folding, but at a critical dip of the beds (c. 15{degrees}), bedding-parallel slip by flexural slip folding is the predominant mechanism. This relationship is substantiated by curvature calculations. Crestal fractures have a large vertical extent in mechanical unit B (〉 150 m), primarily due to the lithological homogeneity of massive packstones within the Asmari Formation. Northerly and easterly trending fracture corridors, interpreted from satellite imagery, are spatially unrelated to the detachment folding of the cover series, but represent the distributed effect of deep-seated basement reactivation related to fault movement. These trends define high production zones in the nearby Gachsaran super giant oilfield. Observations from an adjacent eroded box fold, the Kuh-e Mish, with steeper dipping limbs (60{degrees}), revealed a contrast in the style of deformation, and we interpret these folds to represent different stages in box fold evolution.
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  • 9
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    In:  Geological Society Special Publication 223: 195-218.
    Publication Date: 2007-10-08
    Description: Extensional tectonics to the north of the Variscan Front during the Early Carboniferous generated fault-controlled basins across the British Isles, with accompanying basaltic magmatism. In Scotland Dinantian magmatism was dominantly mildly alkaline-transitional in composition. Tournaisian activity was followed by widespread Visean eruptions largely concentrated within the Scottish Midland Valley where the lava successions, dominantly of basaltic-hawaiitic composition, attained thicknesses of up to 1000 m. Changing stress fields in the late Visean coincided with a change in the nature of the igneous activity; subsequently, wholly basic magmatism persisted into the Silesian. As sedimentary basin fills increased, sill intrusion tended to dominate over lava extrusion. In the Late Carboniferous (Stephanian) a major melting episode, producing large volumes of tholeiitic magma, gave rise to a major dyke swarm and sills across northern England and Scotland. Alkali basaltic magmatism persisted into the Permian, possibly until as late as 250 Ma in Orkney. Geochemical data suggest that the Carboniferous-Permian magmas were dominantly of asthenospheric origin, derived from variable degrees of partial melting of a heterogeneous mantle source; varying degrees of interaction with the lithosphere are indicated. Peridotite, pyroxenite and granulite-facies basic meta-igneous rocks entrained as xenoliths within the most primitive magmas provide evidence for metasomatism of the lithospheric mantle and high-pressure crystal fractionation.
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  • 10
    Publication Date: 2007-05-29
    Print ISSN: 1550-7998
    Electronic ISSN: 1550-2368
    Topics: Physics
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