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  • 1
    Call number: 9/M 07.0421(360)
    In: Geological Society special publication
    Description / Table of Contents: This collection of papers presents recent advances in the study of deformation mechanisms and rheology and their applications to tectonics. Many of the contributions exploit new petrofabric techniques, particularly electron backscatter diffraction, to help understand evolution of rock microstructure and mechanical properties. Papers in the first section (lattice preferred orientations and anisotropy) show a growing emphasis on the determination of elastic properties from petrofabrics, from which acoustic properties can be computed for comparison with in-situ seismic measurements. Such research will underpin geodynamic interpretation of large-scale active tectonics. Contributions in the second section (microstructures, mechanisms and rheology) study the relations between microstructural evolution during deformation and mechanical properties. Many of the papers explore how different mechanisms compete and interact to control the evolution of grain size and petrofabrics. Contributors make use of combinations of laboratory experiments, field studies and computational methods, and several relate microstructural and mechanical evolution to large-scale tectonic processes observed in nature.
    Type of Medium: Monograph available for loan
    Pages: XI, 342 S. : z.T. farb. Ill. und graph.Darst.
    ISBN: 9781862393387
    Series Statement: Geological Society special publication 360
    Classification:
    Tectonics
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Description / Table of Contents: This collection of papers presents recent advances in the study of deformation mechanisms and rheology and their applications to tectonics. Many of the contributions exploit new petrofabric techniques, particularly electron backscatter diffraction, to help understand evolution of rock microstructure and mechanical properties. Papers in the first section (lattice preferred orientations and anisotropy) show a growing emphasis on the determination of elastic properties from petrofabrics, from which acoustic properties can be computed for comparison with in-situ seismic measurements. Such research will underpin geodynamic interpretation of large-scale active tectonics. Contributions in the second section (microstructures, mechanisms and rheology) study the relations between microstructural evolution during deformation and mechanical properties. Many of the papers explore how different mechanisms compete and interact to control the evolution of grain size and petrofabrics. Contributors make use of combinations of laboratory experiments, field studies and computational methods, and several relate microstructural and mechanical evolution to large-scale tectonic processes observed in nature.
    Pages: Online-Ressource (XII, 342 Seiten)
    ISBN: 9781862393387
    Language: English
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  • 3
    Call number: 9/M 07.0421(454)
    In: Geological Society special publication
    Type of Medium: Monograph available for loan
    Pages: vii, 368 Seiten , Illustrationen
    ISBN: 978-1-78620-316-8
    Series Statement: Geological Society Special Publication 454
    Language: Undetermined
    Location: Reading room
    Branch Library: GFZ Library
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  • 4
    Keywords: geomechanics ; petrophysics ; mudrocks
    Description / Table of Contents: Introduction --- Geomechanical and petrophysical properties of mudrocks: introduction / Ernest Rutter, Julian Mecklenburgh and Kevin Taylor / Geological Society, London, Special Publications, 454, 1-13, 4 July 2017, https://doi.org/10.1144/SP454.16 --- Petrophysical properties --- Determining the porosity of mudrocks using methodological pluralism / Andreas Busch, Kevin Schweinar, Niko Kampman, Ab Coorn, Vitaliy Pipich, Artem Feoktystov, Leon Leu, Alexandra Amann-Hildenbrand and Pieter Bertier / Geological Society, London, Special Publications, 454, 15-38, 15 March 2017, https://doi.org/10.1144/SP454.1 --- Microstructural controls on the pressure-dependent permeability of Whitby mudstone / Rosanne McKernan, Julian Mecklenburgh, Ernie Rutter and Kevin Taylor / Geological Society, London, Special Publications, 454, 39-66, 31 May 2017, https://doi.org/10.1144/SP454.15 --- Hydraulic conductivity of bedding-parallel cracks in shale as a function of shear and normal stress / Ernest H. Rutter and Julian Mecklenburgh / Geological Society, London, Special Publications, 454, 67-84, 30 March 2017, https://doi.org/10.1144/SP454.9 --- The effect of microstructural heterogeneity on pore size distribution and permeability in Opalinus Clay (Mont Terri, Switzerland): insights from an integrated study of laboratory fluid flow and pore morphology from BIB-SEM images / T. Philipp, A. Amann-Hildenbrand, B. Laurich, G. Desbois, R. Littke and J. L. Urai / Geological Society, London, Special Publications, 454, 85-106, 15 March 2017, https://doi.org/10.1144/SP454.3 --- Stress-dependence of porosity and permeability of the Upper Jurassic Bossier shale: an experimental study / R. Fink, B. M. Krooss and A. Amann-Hildenbrand / Geological Society, London, Special Publications, 454, 107-130, 15 March 2017, https://doi.org/10.1144/SP454.2 --- Gas transport properties through intact and fractured Callovo-Oxfordian mudstones / Jon F. Harrington, Robert J. Cuss and Jean Talandier / Geological Society, London, Special Publications, 454, 131-154, 3 April 2017, https://doi.org/10.1144/SP454.7 --- Modelling of CO2 diffusion and related poro-elastic effects in a smectite-rich cap rock above a reservoir used for CO2 storage / Hendrik M. Wentinck and Andreas Busch / Geological Society, London, Special Publications, 454, 155-173, 15 March 2017, https://doi.org/10.1144/SP454.4 --- Microstructure and mineralogy --- Correlative multi-scale imaging of shales: a review and future perspectives / Lin Ma, Anne-Laure Fauchille, Patrick J. Dowey, Fernando Figueroa Pilz, Loic Courtois, Kevin G. Taylor and Peter D. Lee / Geological Society, London, Special Publications, 454, 175-199, 2 May 2017, https://doi.org/10.1144/SP454.11 --- Water vapour sorption on mudrocks / Timo Seemann, Pieter Bertier, Bernhard M. Krooss and Helge Stanjek / Geological Society, London, Special Publications, 454, 201-233, 10 May 2017, https://doi.org/10.1144/SP454.8 --- Mineralogical characterization of coal samples relevant to coal bed methane porosity and permeability concerns / C. Cuff, M. Corkeron, C. E. Rasmussen, A. Bush and K. Camuti / Geological Society, London, Special Publications, 454, 235-252, 4 July 2017, https://doi.org/10.1144/SP454.13 --- The importance of illitic minerals in shale instability and in unconventional hydrocarbon reservoirs / M. J. Wilson, L. Wilson and M. V. Shaldybin / Geological Society, London, Special Publications, 454, 253-269, 31 May 2017, https://doi.org/10.1144/SP454.14 --- The influence of diagenetic and mineralogical factors on the breakdown and geotechnical properties of mudrocks / John C. Cripps and Mourice A. Czerewko / Geological Society, London, Special Publications, 454, 271-293, 2 May 2017, https://doi.org/10.1144/SP454.10 --- Fracture --- Effect of temperature on the fracture toughness of anisotropic shale and other rocks / Michael R. Chandler, Philip G. Meredith, Nicolas Brantut and Brian R. Crawford / Geological Society, London, Special Publications, 454, 295-303, 3 April 2017, https://doi.org/10.1144/SP454.6 --- Strain superposition and fault stability during sequential hydraulic fracturing / T. R. Harper / Geological Society, London, Special Publications, 454, 305-326, 15 March 2017, https://doi.org/10.1144/SP454.5 --- Integrating induced seismicity with rock mechanics: a conceptual model for the 2011 Preese Hall fracture development and induced seismicity / Rob Westaway / Geological Society, London, Special Publications, 454, 327-359, 31 May 2017, https://doi.org/10.1144/SP454.12
    Pages: Online-Ressource (VII, 368 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786203168
    Language: English
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  • 5
    Publication Date: 2011-11-17
    Description: This special publication of the Geological Society of London presents recent advances in the study of deformation mechanisms and rheology and their application to tectonics. We have subdivided the papers into two themed sections. The inference of deformation processes, conditions and rheology at depth in active tectonic settings is of fundamental importance to a quantitative geodynamic understanding of deformation in the Earth. The papers in the section on Lattice Preferred Orientations and Anisotropy are extremely important as they underpin our ability to make such geodynamic interpretations from global seismic data. These papers reflect the growing emphasis on the determination of elastic properties from microstructures, from which acoustic properties can be computed for comparison with in situ seismic measurements. The component of the microstructure that receives most attention is the lattice preferred orientation (LPO), otherwise known as the crystallographic preferred orientation (CPO) or the texture (the term used in material science and metallurgy). The papers include new LPO measurements (made almost exclusively by the relatively new technique of electron backscatter diffraction or EBSD), exploration of the significance of these data for seismic properties of both the crust and the mantle and modelling of LPO generation. An invited contribution from Mainprice and colleagues introduces a computational toolbox to help researchers calculate anisotropic physical properties from their LPO data. Rock microstructures evolve during deformation and rock physical properties, including both elastic properties and creep rheology, evolve with the microstructures as a function of strain and time. The section on Microstructures, Mechanisms and Rheology reflects the fundamental importance of understanding microstructural evolution to our ability to estimate deformation processes and conditions from recovered samples or geophysical data and to our modelling of tectonics. An invited contribution from Austin focuses on some of the key issues from the last few decades: how different mechanisms...
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  • 6
    Publication Date: 2018-02-01
    Description: Transmissivity of fluids along fractures in rocks is reduced by increasing normal stress acting across them, demonstrated here through gas flow experiments on Bowland shale, and oil flow experiments on Pennant sandstone and Westerly granite. Additionally, the effect of imposing shear stress at constant normal stress was determined, until frictional sliding started. In all cases, increasing shear stress causes an accelerating reduction of transmissivity by 1 to 3 orders of magnitude as slip initiated, as a result of the formation of wear products that block fluid pathways. Only in the case of granite, and to a lesser extent in the sandstone, was there a minor amount of initial increase of transmissivity prior to the onset of slip. These results cast into doubt the commonly applied presumption that cracks with high resolved shear stresses are the most conductive. In the shale, crack transmissivity is commensurate with matrix permeability, such that shales are expected always to be good seals. For the sandstone and granite, unsheared crack transmissivity was respectively 2 and 2.5 orders of magnitude greater than matrix permeability. For these rocks crack transmissivity can dominate fluid flow in the upper crust, potentially enough to permit maintenance of a hydrostatic fluid pressure gradient in a normal (extensional) faulting regime. ©2018. The Authors.
    Print ISSN: 2169-9313
    Electronic ISSN: 2169-9356
    Topics: Geosciences , Physics
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  • 7
    Publication Date: 2018-08-03
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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  • 8
    Publication Date: 1972-05-01
    Print ISSN: 0040-1951
    Electronic ISSN: 1879-3266
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 9
    Publication Date: 1974-06-01
    Print ISSN: 0040-1951
    Electronic ISSN: 1879-3266
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 10
    Publication Date: 1995-12-10
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
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