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  • 1
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Springer
    Call number: 11/M 05.0235
    Type of Medium: Monograph available for loan
    Pages: X, 347 S.
    Edition: 2nd, completely revised and updated ed.
    ISBN: 3540240233
    Classification:
    Petrology, Petrography
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Call number: 5/M 95.0219 ; 5/M 92.0622
    In: International geophysics series
    Type of Medium: Monograph available for loan
    Pages: xxiii, 524 S.
    ISBN: 0-12-243780-2
    Series Statement: International geophysics series 51
    Classification:
    Tectonics
    Language: English
    Note: Contents: Contributors. - Introduction: William F. Brace. - The Brace Symposium and this Volume. - Bibliography: William F. Brace. - Acknowledgments. - BRITTLE FAILURE OF ROCKS. - 1 Observations of Quasistatic Fault Growth from Acoustic Emissions / D.A. Lockner, J.D. Byerlee, V. Kuksenko, A. Ponomarev, A. Sidorin. - 2 Fabrics of Experimental Fault Zones: Their Development and Relationship to Mechanical Behavior / J.M. Logan, C.A. Dengo, N.G. Higgs, Z.Z. Wang. - 3 Frictional Strength and the Effective Pressure Law of Montmorillonite and lllite Clays / C. Morrow, B. Radney, J. Byerlee. - 4 The Brittle-Ductile Transition in Feldspar Aggregates: An Experimental Study / J. Tullis, R. Yund. - 5 Stabilization of Faulting by Cumulative Slip / Teng-fong Wong, Yaojun Gu, Takashi Yanagidani, Yusheng Zhao. - PERMEABILITY AND FLUID FLOW IN ROCKS. - 6 On the Measurement of Permeability in Anisotropic Rocks / Yves Bernabé. - 7 Permeability and Relative Permeability in Rocks / Stephen C. Blair, James G. Berryman. - 8 The Determination of Permeability and Storage Capacity: Pore Pressure Oscillation Method / G.J. Fischer. - 9 Measurement of Permeability and Storage Capacity in Rocks During Deformation at High Temperature and Pressure / G.J. Fischer, M.S. Paterson. - 10 Growth of Grain Contacts in Halite by Solution-transfer: Implications for Diagenesis, Lithification, and Strength Recovery / Stephen H. Hickman, Brian Evans. - 11 The Influence of H2O and CO2 on Melt Migration in Two Silicate Liquid-Olivine Systems / G.N. Riley Jr., D.L. Kohlstedt. - FRACTURE CHARACTERIZATION AND PHYSICAL PROPERTIES OF ROCK. - 12 Fluid-driven Cyclic Propagation of a Joint in the Ithaca Siltstone, Appalachian Basin, New York / Alfred Lacazette, Terry Engelder. - 13 The Influence of Hydrostatic and Uniaxial Stress on Remanent Magnetization / Randolph J. Martin. - 14 The Correlation between Fracture-toughness Anisotropy and Crack-surface Morphology of Siltstones in the Ithaca Formation, Appalachian Basin / Paul A. Scott, Terry Engelder, John J. Mecholsky Jr. - 15 CT Imaging of Electrical Resistivity Measurements: Nonuniform Water Saturation Can Be a Problem / Eve S. Sprunt. - 16 Fracture Detection and Characterization from Hydrophone Vertical Seismic Profiling Data / M.N. Toksöz, C.H. Cheng, R.D. Cicerone. - IMPLICATIONS OF ROCK MECHANICS ON CRUSTAL TECTONICS. - 17 Role of Elastic Stiffness and Fault Damping during Thrust-sheet Emplacement in a Foreland Belt / E.G. Bombolakis. - 18 Brace-Goetze Strength Profiles, The Partitioning of Strike-slip and Thrust Faulting at Zones of Oblique Convergence, and the Stress-Heat Flow Paradox of the San Andreas Fault / Peter Molnar. - 19 Hydraulic Pulses in the Earth's Crust / Amos Nor, Joseph Walder. - 20 Fault Stress States, Pore Pressure Distributions, and the Weakness of the San Andreas Fault / James R. Rice. - 21 Paradigms or Small Change in Earthquake Mechanics / C.H. Scholz. - Index.
    Location: Reading room
    Location: Reading room
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 3
    Publication Date: 2017-04-04
    Description: see Abstract Volume
    Description: Istituto Nazionale di Geofisica e Vulcanologia, Italy (INGV) Centre National de la Recherche Scientifique (CNRS) ExxonMobil Upstream Research Company
    Description: Unpublished
    Description: Erice, Italy
    Description: open
    Keywords: rock physics, geomechanics, thermo-hydro-mechanical coupling, natural hazards ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Oral presentation
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  • 4
    Publication Date: 2017-04-04
    Description: see Abstract Volume
    Description: Istituto Nazionale di Geofisica e Vulcanologia, Italy (INGV) Centre National de la Recherche Scientifique (CNRS) ExxonMobil Upstream Research Company
    Description: Unpublished
    Description: Erice, Italy
    Description: open
    Keywords: rock physics, geomechanics, thermo-hydro-mechanical coupling, natural hazards ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Oral presentation
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  • 5
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 112 (2007): B10207, doi:10.1029/2006JB004456.
    Description: A fundamental understanding of the effect of stress on permeability evolution is important for many fault mechanics and reservoir engineering problems. Recent laboratory measurements demonstrate that in the cataclastic flow regime, the stress-induced anisotropic reduction of permeability in porous rocks can be separated into 3 different stages. In the elastic regime (stage I), permeability and porosity reduction are solely controlled by the effective mean stress, with negligible permeability anisotropy. Stage II starts at the onset of shear-enhanced compaction, when a critical yield stress is attained. In stage II, the deviatoric stress exerts primary control over permeability and porosity evolution. The increase in deviatoric stress results in drastic permeability and porosity reduction and considerable permeability anisotropy. The transition from stage II to stage III takes place progressively during the development of pervasive cataclastic flow. In stage III, permeability and porosity reduction becomes gradual again, and permeability anisotropy diminishes. Microstructural observations on deformed samples using laser confocal microscopy reveal that stress-induced microcracking and pore collapse are the primary forms of damage during cataclastic flow. A probabilistic damage model is formulated to characterize the effects of stress on permeability and its anisotropy. In our model, the effects of both effective mean stress and differential stress on permeability evolution are calculated. By introducing stress sensitivity coefficients, we propose a first-order description of the dependence of permeability evolution on different loading paths. Built upon the micromechanisms of deformation in porous rocks, this unified model provides new insight into the coupling of stress and permeability.
    Description: W.Z. was partially supported by the National Science Foundation under grants NSF-OCE0221436 and NSF-EAR 0510459, and the Department of Energy under grant #DEFGO200ER15058 (WHOI). LM was supported by the National Science Foundation under grant NSF-EAR0337678.
    Keywords: Permeability anisotropy ; Cataclastic flow ; Shear-enhanced compaction
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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  • 6
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    Unknown
    PANGAEA
    In:  Supplement to: Meng, Fanbao; Baud, Patrick; Ge, Hongkui; Wong, Teng-fong (2019): The Effect of Stress on Limestone Permeability and Effective Stress Behavior of Damaged Samples. Journal of Geophysical Research: Solid Earth, 124(1), 376-399, https://doi.org/10.1029/2018JB016526
    Publication Date: 2023-01-13
    Description: The evolution of permeability and its effective stress behavior is related to inelastic deformation and failure mode. This was systematically investigated in Indiana and Purbeck limestones with porosities of 16% and 14%, respectively. High‐pressure compression tests were conducted at room temperature on water‐saturated samples. At relatively high confinement shear‐enhanced compaction was observed to initiate at a critical stress, accompanied by significant permeability reduction of up to a factor of ~3. Overall, the permeability reduction due to inelastic compaction in our limestones is smaller than that observed in sandstones. At relatively low confinement, dilatant failure was observed, which was accompanied by a decrease and increase of permeability in Indiana and Purbeck limestones, respectively. There seems to be a trend for the correlation between porosity and permeability changes to switch from positive to negative with increasing porosity. The void space of both limestones has significant proportions of macropores and micropores. The effective stress behavior of such a limestone with dual porosity has been documented to be different from the prediction for a microscopically homogeneous assemblage, in that its effective stress coefficients for permeability and pore volume change may attain values significantly 〉1. In contrast, our investigation of damaged samples consistently showed effective stress coefficients for both permeability and pore volume change with values 〈1. This suggests that the behavior in the damaged samples is akin to that of a microscopically homogeneous assemblage, possibly due to pervasive collapse of macropores that would effectively homogenize the initially bimodal pore size distribution.
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 5.4 MBytes
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  • 7
    Publication Date: 2023-01-13
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 56 kBytes
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  • 8
    Publication Date: 2024-04-20
    Description: The samples are cylinders of Adamswiller and Rothbach sandstones of nominal length 80 mm and diameter 40 mm. The average porosities for our Adamswiller and Rothbach sandstone samples are 25.8% and 24.3%, respectively. The permeability and strain were measured under hydrostatic loading.
    Keywords: clay; confining pressure; fluid flow; mechanical anisotropy; pore pressure; pore volume
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 150.5 kBytes
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  • 9
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 143 (1994), S. 387-423 
    ISSN: 1420-9136
    Keywords: Fault gouge ; Riedel shear ; nonlinear dynamics ; rock friction ; orientation of stress ; shear localization ; stick-slip instability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Frictional sliding experiments were conducted on two types of simulated quartz gouge (with median particle diameters 5 μm and 25 μm, respectively) at confining pressures ranging from 50 MPa to 190 MPa in a conventional triaxial configuration. To investigate the operative micromechanical processes, deformation texture developed in the gouge layer was studied in samples which had accumulated different amounts of frictional slip and undergone different stability modes of sliding. The spatial patterning of shear localization was characterized by a quantitative measurement of the shear band density and orientation. Shear localization in the ultrafine quartz gouge initiated very early before the onset of frictional sliding. Various modes of shear localization were evident, but within the gouge zoneR 1-shears were predominant. The density of shear localization increased with cumulative slip, whereas the angle subtended at the rock-gouge interface decreased. Destabilization of the sliding behavior in the ultrafine quartz gouge corresponded to the extension ofR 1-shears and formation of boundaryY-shear segments, whereas stabilization with cumulative slip was related to the coalescence ofY-shear segments to form a throughgoing boundary shear. In the coarse quartz gouge, the sliding behavior was relatively stable, probably because shear localization was inhibited by distributed comminution. Two different models were formulated to analyze the stress field within the gouge zone, with fundamentally different predictions on the orientations of the principal stresses. If the rock-gouge interface is assumed to be bonded without any displacement discontinuity, then the maximum principal stress in the gouge zone is predicted to subtend an angle greater than 45° at the interface. If no assumption on displacement or strain continuity is made and if the gouge has yielded as a Coulomb material, then the maximum principal stress in the gouge zone is predicted to subtend an angle less than 45°. If the apparent friction coefficient increases with overall slip (i.e., slip-hardening), then the Riedel shear angle progressively decreases with increasing shear strain within the gouge layer, possibly attaining a zero value which corresponds to a boundaryY-shear. Our quantitative data on shear localization orientation are in reasonable agreement with this second model, which implies the coefficient of internal friction to be about 0.75 for the ultrafine quartz gouge and 0.8 for the coarse gouge. The wide range of orientations for Riedel shear localization observed in natural faults suggests that the orientations of principal stresses vary as much as in an experimental gouge zone.
    Type of Medium: Electronic Resource
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