The Internal Structure Of Fault Zones
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The Internal Structure of Fault Zones
Author | : Christopher A. J. Wibberley |
Publsiher | : Geological Society of London |
Total Pages | : 384 |
Release | : 2008 |
Genre | : Science |
ISBN | : 1862392536 |
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Faults are primary focuses of both fluid migration and deformation in the upper crust. The recognition that faults are typically heterogeneous zones of deformed material, not simple discrete fractures, has fundamental implications for the way geoscientists predict fluid migration in fault zones, as well as leading to new concepts in understanding seismic/aseismic strain accommodation. This book captures current research into understanding the complexities of fault-zone internal structure, and their control on mechanical and fluid-flow properties of the upper crust. A wide variety of approaches are presented, from geological field studies and laboratory analyses of fault-zone and fault-rock properties to numerical fluid-flow modelling, and from seismological data analyses to coupled hydraulic and rheological modelling. The publication aims to illustrate the importance of understanding fault-zone complexity by integrating such diverse approaches, and its impact on the rheological and fluid-flow behaviour of fault zones in different contexts.
The Internal Structure of Fault Zones
Author | : Christopher A. J. Wibberley |
Publsiher | : Unknown |
Total Pages | : 367 |
Release | : 2008 |
Genre | : Electronic book |
ISBN | : 152312248X |
Download The Internal Structure of Fault Zones Book in PDF, Epub and Kindle
Faults are primary focuses of both fluid migration and deformation in the upper crust. The recognition that faults are typically heterogeneous zones of deformed material, not simple discrete fractures, has fundamental implications for the way geoscientists predict fluid migration in fault zones, as well as leading to new concepts in understanding seismic/aseismic strain accommodation. This book captures current research into understanding the complexities of fault-zone internal structure, and their control on mechanical and fluid-flow properties of the upper crust.
Internal Structure of Fault Zones
Author | : Chi-yuen Wang |
Publsiher | : Unknown |
Total Pages | : 135 |
Release | : 1986 |
Genre | : Electronic Book |
ISBN | : OCLC:1280803180 |
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Mechanics Structure and Evolution of Fault Zones
Author | : Yehuda Ben-Zion,Charles Sammis |
Publsiher | : Springer Science & Business Media |
Total Pages | : 375 |
Release | : 2009-12-30 |
Genre | : Science |
ISBN | : 9783034601382 |
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Considerable progress has been made recently in quantifying geometrical and physical properties of fault surfaces and adjacent fractured and granulated damage zones in active faulting environments. There has also been significant progress in developing rheologies and computational frameworks that can model the dynamics of fault zone processes. This volume provides state-of-the-art theoretical and observational results on the mechanics, structure and evolution of fault zones. Subjects discussed include damage rheologies, development of instabilities, fracture and friction, dynamic rupture experiments, and analyses of earthquake and fault zone data.
Predicting the Internal Structure of Fault Zones in Basalt Sequences and Their Effect on Along and Across fault Fluid Flow
Author | : Rachael Ellen |
Publsiher | : Unknown |
Total Pages | : 0 |
Release | : 2012 |
Genre | : Electronic Book |
ISBN | : OCLC:1417518102 |
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Interest in the architecture and fluid flow potential of fault zones in basalt sequences has intensified over recent years, due to their applications in the hydrocarbon industry and CO2 storage. In this study, field mapping is combined with micro-structural analyses and flow modelling to evaluate fault growth, evolution, fluid-rock interactions, and permeability changes over time in faults in basalt sequences. Twelve brittle fault zones cutting basalt sequences in the North Atlantic Igneous Province were studied. This study finds that fault architecture is ultimately controlled by displacement and juxtaposition. Self-juxtaposed faults (i.e. basalt faulted against itself) are characterised by wide zones of brecciation, cataclasis, fracturing, mineralisation and alteration. Non self-juxtaposed faults (i.e. basalt faulted against an inter-lava unit) are characterised by relatively narrow principal slip zones, filled with clay smears or clay-rich gouge derived from inter-lava beds. This study also finds that brittle deformation of basalts at the grain scale is mineralogy dependent. Fe-Ti oxides and pyroxenes deform by intragranular fracturing and grain size reduction, whereas olivines and feldspars are susceptible to replacement by clay and zeolites. Fault rock bulk chemistries are likely to differ from their host rocks, and this is controlled by secondary mineral formation, with zeolite and clay minerals playing an important role. Flow modelling in this study shows that controls on along- and across-fault fluid flow can significantly change fault zone bulk permeability over time, as a result of mineralisation and alteration of the fault zone as it evolves. The results from this study are used to propose a model for how fault strength, fault-related alteration, and permeability change over time in fault zones in basalt sequences. Results highlight the impact that fault-related alteration could have on CO2 storage. A predictive model for fault structure at depth, developed from this study's findings, is presented for fault zones in basalt sequences, which has particular relevance to the hydrocarbon and CO2 industry.
Fault Zone Properties and Earthquake Rupture Dynamics
Author | : Eiichi Fukuyama |
Publsiher | : Academic Press |
Total Pages | : 336 |
Release | : 2009-04-24 |
Genre | : Science |
ISBN | : 0080922465 |
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The dynamics of the earthquake rupture process are closely related to fault zone properties which the authors have intensively investigated by various observations in the field as well as by laboratory experiments. These include geological investigation of the active and fossil faults, physical and chemical features obtained by the laboratory experiments, as well as the seismological estimation from seismic waveforms. Earthquake dynamic rupture can now be modeled using numerical simulations on the basis of field and laboratory observations, which should be very useful for understanding earthquake rupture dynamics. Features: * First overview of new and improved techniques in the study of earthquake faulting * Broad coverage * Full color Benefits: * A must-have for all geophysicists who work on earthquake dynamics * Single resource for all aspects of earthquake dynamics (from lab measurements to seismological observations to numerical modelling) * Bridges the disciplines of seismology, structural geology and rock mechanics * Helps readers to understand and interpret graphs and maps Also has potential use as a supplementary resource for upper division and graduate geophysics courses.
Hydrocarbon Seals
Author | : P. Møller-Pedersen,A.G. Koestler |
Publsiher | : Elsevier |
Total Pages | : 249 |
Release | : 1997-12-18 |
Genre | : Technology & Engineering |
ISBN | : 0080534287 |
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In January 1996 a total of 270 conference participants gathered for 3 days in Trondheim, Norway, to focus on and to discuss the complex topic of hydrocarbon seals particularly related to deformation zones and to caprocks. The conference was the first in Norway and one of the first in Europe to exclusively address this very important subject. The purpose of the conference was to present some of the most recent research results, to establish state-of-the-art with respect to understanding hydrocarbon seals and to discuss where to go from here to find some of the keys to successful future exploration and enhanced oil and gas recovery. Out of the presented papers and posters, 17 are compiled and published in this volume. These provide a good overview of and an introduction to the numerous aspects covered during the fruitful days in Trondheim.
Seismic Imaging Fault Damage and Heal
Author | : Yong-Gang Li |
Publsiher | : Walter de Gruyter GmbH & Co KG |
Total Pages | : 387 |
Release | : 2014-05-21 |
Genre | : Science |
ISBN | : 9783110329957 |
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Presenting current approaches in observational and computational seismology, this book introduces advanced methods and techniques by means of case studies in earthquake research. Among others these include solving inverse seismologic problems, tomography for structure imaging, characterizing fault damage and healing, seismicity analysis for determining pre-shock moment release, and coupled solid-fluid models.