terça-feira, 20 de abril de 2010

Mesozoic Sub-Continental Lithospheric Thinning under Eastern Asia (Geological Society Special Publication No. 280)

Mesozoic Sub-Continental Lithospheric Thinning under Eastern Asia (Geological Society Special Publication No. 280) Publisher: Geological Society of London ISBN: 1862392250 edition 2007 PDF 352 pages 56,6 mb
The North China craton is the only known place where an Archaean craton with a thick tectospheric root lost half of that root in younger tectonism by processes such as delamination, convection, hydration-weakening, compositional change or some other mechanism. In this volume, authors provide data constraining the geometry and timing of root loss, aimed at understanding why and how continental roots are lost in general. Modelling how often this process may have occurred in the geological past, and how much lithospheric material has been recycled to the convecting mantle through this mechanism, could drastically change our current understanding of crustal growth rates and processes. Possible triggering mechanisms for root loss include collision of the South China (Yangtze) and North China cratons in the Triassic, the India-Asia collision, closure of the Solonker and Monhgol-Okhotsk oceans, Mesozoic subduction of the Pacific Plate beneath eastern China, impingement of mantle plumes, mantle hydration from long-term subduction and several rifting events. In this volume, we link studies of crustal tectonics with investigations aimed at determining the nature of and timing of the formation and loss of the root, in order to better-understand mechanisms of continental root formation, evolution and recycling/removal.


Biotic Recovery from Mass Extinction Events (Salmon Poetry)

Biotic Recovery from Mass Extinction Events (Salmon Poetry) Publisher: Geological Society of London ISBN: 1897799454 edition 1996 PDF 392 pages 55,1 mb
Contains papers by leading authorities on several of the major extinction events of the geological record. The book brings together new data on a wide range of floral and faunal groups. The papers are grouped as general, Palaeozoicevents, Mesozoic events and Cenozoic events. Several of the papers describe the recovery and recolonization processes following the extinction events while others discuss the problems of 'survivor taxa', 'disaster taxa' and 'progenitor species'. The examples chosen come from geological successions in North America, South America, Europe, Asia and the Indian Subcontinent.


Geohazard in Rocky Costal Areas

Geohazard in Rocky Costal AreasBy C Violante Publisher: Geological Society Of London 2009-09-01 English PDF 216 pages ISBN : 186239282X 12.3 Mb
This Special Publication provides a range of methods and approaches for characterizing and modelling mass-wasting phenomena responsible for land degradation and erosion in rocky coastal areas. Rocky coasts occur in a variety of geological settings with a wide range of morphologies depending on rock type, tectonics and climate. In all these settings, slope instability represents the most important geological process that significantly influences the human use of coastal resources over a range of magnitudes and periods of recurrence.The reported case studies in the volume deal with land-born geological processes that deliver sediment to the coast and open sea at intermittent time intervals, often with catastrophic implications. They include large slope failures on both volcanic and non-volcanic coastal areas, cliff recession and floods of coastal streams from key areas of the Italian peninsula. All these studies seek to establish sea-land correlations based on marine geophysical investigations and field analyses, and to highlight the role of documentary sources in order to recognize geological constraints for hazard assessment in rocky coastal areas.

Geodynamic Evolution of East Antarctica - Special Publication no 308

Geodynamic Evolution of East Antarctica - Special Publication no 308Geological Society Special Publication December 15, 2008 English ISBN: 1862392684 460 pages PDF 15.75 MB
Geological correlations of East Antarctica with adjoining continents have been puzzling geologists ever since the concept of a Gondwana supercontinent surfaced. Despite the paucity of outcrops because of ice cover, difficulty of access and extreme weather, the past 50 years of Japanese Antarctic Research Expeditions (JARE) has successfully revealed vital elements of the geology of East Antarctica. This volume presents reviews and new research from localities across East Antarctica, especially from Dronning Maud Land to Enderby Land, where the geological record preserves a history that spans the Archaean and Proterozoic. The reviews include extensive bibliographies of results obtained by geologists who participated in the JARE. Comprehensive geological, petrological and geochemical studies, form a platform for future research on the formation and dispersion of Rodinia in the Mesoproterozoic and subsequent assembly of Gondwana in the Neoproterozoic to Early Palaeozoic.

Fracture and In-Situ Stress Characterization of Hydrocarbon Reservoirs (Geological Society Special Publication) by Geological Society Publishing

Fracture and In-Situ Stress Characterization of Hydrocarbon Reservoirs (Geological Society Special Publication) by Geological Society PublishingPublisher: Geological Society of London Number Of Pages: 216 Publication Date: 2003-01 ISBN-10: 1862391300 PDF 24 Mb
This publication introduces the newly developed, integrated discipline of fracture and in-situ stress characterization of hydrocarbon reservoirs, through 16 well-illustrated case studies. These cover a wide range of tools, from borehole scale (logs and core) to reservoir scale (e.g. 3-D and 4-D seismic). It also covers surface studies (outcrop and remote sensing). In addition, it addresses the impact of fractures and in-situ stresses on fluid flows and their simulation. The subject that this volume deals with is gaining increasing interest with the advancement of technologies and shifting boundaries of marginal fields into more challenging ground. Fractures and their response to current-day in-situ stresses have become a crucial part of reservoir characterization in deep tight reservoirs. In addition, maturing reservoirs, which were considered as 'conventional' at discovery, are displaying symptoms characteristic of fractures and/or geomechanical contribution. This has lead to the need to delineate the fractures and the stresses in these reservoirs and revise reservoir management accordingly. This volume will be of interest to a broad range of readers from both academic and industrial institutes, who are researching and dealing with hydrocarbon reservoir characterization, simulation and management.

Electron Microprobe Analysis and Scanning Electron Microscopy in Geology

Electron Microprobe Analysis and Scanning Electron Microscopy in Geology Publisher: Cambridge University Press ISBN: 052184875X edition 2006 PDF 206 pages 4,18 mb
Now fully updated to cover recent developments, this book covers the closely related techniques of electron microprobe analysis (EMPA) and scanning electron microscopy (SEM) specifically from a geological viewpoint. Topics discussed include: principles of electron-target interactions, electron beam instrumentation, X-ray spectrometry, general principles of SEM image formation, production of X-ray 'maps' showing elemental distributions, procedures for qualitative and quantitative X-ray analysis (both energy-dispersive and wavelength-dispersive), the use of both 'true' electron microprobes and SEMs fitted with X-ray spectrometers, and practical matters such as sample preparation and treatment of results. Throughout, there is an emphasis on geological aspects not mentioned in similar books aimed at a more general readership. The book avoids unnecessary technical detail in order to be easily accessible, and forms an up-to-date text on EMPA and SEM for geological postgraduate and postdoctoral researchers, as well as those working in industrial laboratories.

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