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Title: Ensemble Shear Strength, Stability, and Permeability of Mixed Mineralogy Fault Gouge Recovered From 3D Granular Models

Abstract

We conduct numerical shear experiments on mixtures of quartz and talc gouge using a three-dimensional (3D) distinct element model. A modified slip-weakening constitutive law is applied at contacts. We perform velocity-stepping experiments on both uniform and layered mixtures of quartz and talc analogs. We separately vary the proportion of talc in the uniform mixtures and talc layer thickness in the layered mixtures. Shear displacements are cycled through velocities of 1 and 10 μm/s. We follow the resulting evolution of ensemble shear strength, slip stability, and permeability of the gouge mixture and explore the mesoscopic mechanisms. Simulation results show that talc has a strong weakening effect on shear strength—a thin shear-parallel layer of talc (three particles wide) can induce significant weakening. However, the model offsets laboratory-derived strong weakening effects of talc observed in uniform mixtures, implying the governing mechanisms may be the shear localization effect of talc, which is enhanced by its natural platy shape or preimposed layered structure. Ensemble stability (a – b ) can be enhanced by increasing talc content in uniform talc-quartz mixtures. Reactivation-induced permeability increase is amplified with increased quartz content before the maturation of shear localization. Postmaturation permeability enhances on velocity upsteps and diminishes on velocitymore » downsteps. Talc enhances compaction at velocity downsteps, potentially reducing fault permeability. Evolution trends of stability relating to the composition and structure of the fault gouge are straightforwardly obtained from the 3D simulation. Local friction evolution indicates that talc preferentially organizes and localizes in the shear zone, dominating the shear strength and frictional stability of faults« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Pennsylvania State Univ., University Park, PA (United States). EMS Energy Inst., and G3 Center
  2. Pennsylvania State Univ., University Park, PA (United States). EMS Energy Inst., and G3 Center; Univ. of Texas, Austin, TX (United States). Inst. for Geophysics
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1614206
Alternate Identifier(s):
OSTI ID: 1492190
Grant/Contract Number:  
FE0023354
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Solid Earth
Additional Journal Information:
Journal Volume: 124; Journal Issue: 1; Journal ID: ISSN 2169-9313
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Geochemistry & Geophysics

Citation Formats

Wang, Chaoyi, Elsworth, Derek, and Fang, Yi. Ensemble Shear Strength, Stability, and Permeability of Mixed Mineralogy Fault Gouge Recovered From 3D Granular Models. United States: N. p., 2019. Web. doi:10.1029/2018jb016066.
Wang, Chaoyi, Elsworth, Derek, & Fang, Yi. Ensemble Shear Strength, Stability, and Permeability of Mixed Mineralogy Fault Gouge Recovered From 3D Granular Models. United States. https://doi.org/10.1029/2018jb016066
Wang, Chaoyi, Elsworth, Derek, and Fang, Yi. Fri . "Ensemble Shear Strength, Stability, and Permeability of Mixed Mineralogy Fault Gouge Recovered From 3D Granular Models". United States. https://doi.org/10.1029/2018jb016066. https://www.osti.gov/servlets/purl/1614206.
@article{osti_1614206,
title = {Ensemble Shear Strength, Stability, and Permeability of Mixed Mineralogy Fault Gouge Recovered From 3D Granular Models},
author = {Wang, Chaoyi and Elsworth, Derek and Fang, Yi},
abstractNote = {We conduct numerical shear experiments on mixtures of quartz and talc gouge using a three-dimensional (3D) distinct element model. A modified slip-weakening constitutive law is applied at contacts. We perform velocity-stepping experiments on both uniform and layered mixtures of quartz and talc analogs. We separately vary the proportion of talc in the uniform mixtures and talc layer thickness in the layered mixtures. Shear displacements are cycled through velocities of 1 and 10 μm/s. We follow the resulting evolution of ensemble shear strength, slip stability, and permeability of the gouge mixture and explore the mesoscopic mechanisms. Simulation results show that talc has a strong weakening effect on shear strength—a thin shear-parallel layer of talc (three particles wide) can induce significant weakening. However, the model offsets laboratory-derived strong weakening effects of talc observed in uniform mixtures, implying the governing mechanisms may be the shear localization effect of talc, which is enhanced by its natural platy shape or preimposed layered structure. Ensemble stability (a – b ) can be enhanced by increasing talc content in uniform talc-quartz mixtures. Reactivation-induced permeability increase is amplified with increased quartz content before the maturation of shear localization. Postmaturation permeability enhances on velocity upsteps and diminishes on velocity downsteps. Talc enhances compaction at velocity downsteps, potentially reducing fault permeability. Evolution trends of stability relating to the composition and structure of the fault gouge are straightforwardly obtained from the 3D simulation. Local friction evolution indicates that talc preferentially organizes and localizes in the shear zone, dominating the shear strength and frictional stability of faults},
doi = {10.1029/2018jb016066},
journal = {Journal of Geophysical Research. Solid Earth},
number = 1,
volume = 124,
place = {United States},
year = {Fri Jan 25 00:00:00 EST 2019},
month = {Fri Jan 25 00:00:00 EST 2019}
}

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Works referenced in this record:

Fabric induced weakness of tectonic faults: FABRIC INDUCED WEAKNESS
journal, February 2010

  • Niemeijer, André; Marone, Chris; Elsworth, Derek
  • Geophysical Research Letters, Vol. 37, Issue 3
  • DOI: 10.1029/2009GL041689

Frictional strengths of talc-serpentine and talc-quartz mixtures
journal, January 2011

  • Moore, Diane E.; Lockner, David A.
  • Journal of Geophysical Research, Vol. 116, Issue B1
  • DOI: 10.1029/2010JB007881

Mineralogical Controls on Frictional Strength, Stability, and Shear Permeability Evolution of Fractures
journal, May 2018

  • Fang, Yi; Elsworth, Derek; Wang, Chaoyi
  • Journal of Geophysical Research: Solid Earth, Vol. 123, Issue 5
  • DOI: 10.1029/2017JB015338

A review of recent developments concerning the structure, mechanics and fluid flow properties of fault zones
journal, November 2010

  • Faulkner, D. R.; Jackson, C. A. L.; Lunn, R. J.
  • Journal of Structural Geology, Vol. 32, Issue 11
  • DOI: 10.1016/j.jsg.2010.06.009

Frictional behavior and constitutive modeling of simulated fault gouge
journal, January 1990

  • Marone, Chris; Raleigh, C. Barry; Scholz, C. H.
  • Journal of Geophysical Research, Vol. 95, Issue B5
  • DOI: 10.1029/JB095iB05p07007

On the relation between fault strength and frictional stability
journal, January 2011

  • Ikari, Matt J.; Marone, Chris; Saffer, Demian M.
  • Geology, Vol. 39, Issue 1
  • DOI: 10.1130/G31416.1

Friction of simulated fault gouge for a wide range of velocities and normal stresses
journal, December 1999

  • Mair, Karen; Marone, Chris
  • Journal of Geophysical Research: Solid Earth, Vol. 104, Issue B12
  • DOI: 10.1029/1999JB900279

Creation and preservation of subduction-related inverted metamorphic gradients
journal, January 1987


The importance of the third dimension in granular shear: 3-D MODEL OF GRANULAR SHEAR
journal, July 2003

  • Hazzard, James F.; Mair, Karen
  • Geophysical Research Letters, Vol. 30, Issue 13
  • DOI: 10.1029/2003GL017534

Investigating Compaction by Intergranular Pressure Solution Using the Discrete Element Method
journal, January 2018

  • van den Ende, M. P. A.; Marketos, G.; Niemeijer, A. R.
  • Journal of Geophysical Research: Solid Earth, Vol. 123, Issue 1
  • DOI: 10.1002/2017JB014440

Effects of gouge fragment shape on fault friction: New 3D modelling results
journal, January 2009

  • Abe, Steffen; Mair, Karen
  • Geophysical Research Letters, Vol. 36, Issue 23
  • DOI: 10.1029/2009GL040684

Numerical simulations of granular shear zones using the distinct element method: 1. Shear zone kinematics and the micromechanics of localization
journal, February 1999

  • Morgan, Julia K.; Boettcher, Margaret S.
  • Journal of Geophysical Research: Solid Earth, Vol. 104, Issue B2
  • DOI: 10.1029/1998JB900056

Frictional behavior of talc‐calcite mixtures
journal, September 2015

  • Giorgetti, C.; Carpenter, B. M.; Collettini, C.
  • Journal of Geophysical Research: Solid Earth, Vol. 120, Issue 9
  • DOI: 10.1002/2015JB011970

Effect of particle shape on the shear strength of fault gouge
journal, January 2016


Modeling of Stick-Slip Behavior in Sheared Granular Fault Gouge Using the Combined Finite-Discrete Element Method
journal, July 2018

  • Gao, Ke; Euser, Bryan J.; Rougier, Esteban
  • Journal of Geophysical Research: Solid Earth, Vol. 123, Issue 7
  • DOI: 10.1029/2018JB015668

Particle Dynamics Simulations of Rate- and State-dependent Frictional Sliding of Granular Fault Gouge
journal, August 2004


Shear-induced dilatancy of fluid-saturated faults: Experiment and theory
journal, January 2009

  • Samuelson, Jon; Elsworth, Derek; Marone, Chris
  • Journal of Geophysical Research, Vol. 114, Issue B12
  • DOI: 10.1029/2008JB006273

Assessment of rolling resistance models in discrete element simulations
journal, January 2011


Relationships between the microstructural evolution and the rheology of talc at elevated pressures and temperatures
journal, April 2008


Macroscopic Young’s Elastic Modulus Model of Particle Packing Rock Layers
journal, January 2012

  • Guan, Cheng-Yao; Qi, Jia-Fu; Qiu, Nan-Sheng
  • Open Journal of Geology, Vol. 02, Issue 03
  • DOI: 10.4236/ojg.2012.23020

Fault zone weakening and character of slip along low-angle normal faults: insights from the Zuccale fault, Elba, Italy
journal, December 2004

  • Collettini, C.; Holdsworth, R. E.
  • Journal of the Geological Society, Vol. 161, Issue 6
  • DOI: 10.1144/0016-764903-179

Rolling Resistance at Contacts in Simulation of Shear Band Development by DEM
journal, March 1998


Localization of deformation triggered by chemo-mechanical feedback processes
journal, February 2012

  • Grasemann, B.; Tschegg, C.
  • Geological Society of America Bulletin, Vol. 124, Issue 5-6
  • DOI: 10.1130/B30504.1

DEM simulation of normal faults in cohesive materials
journal, November 2011


Earthquakes and friction laws
journal, January 1998

  • Scholz, Christopher H.
  • Nature, Vol. 391, Issue 6662
  • DOI: 10.1038/34097

Clay gouge
journal, August 1999


Three-dimensional discrete element modeling of triggered slip in sheared granular media
journal, April 2014


Discrete element modeling of indentation tests to investigate mechanisms of CO 2 ‐related chemomechanical rock alteration
journal, November 2016

  • Sun, Zhuang; Espinoza, D. Nicolas; Balhoff, Matthew T.
  • Journal of Geophysical Research: Solid Earth, Vol. 121, Issue 11
  • DOI: 10.1002/2016JB013554

Talc-bearing serpentinite and the creeping section of the San Andreas fault
journal, August 2007


Influence of normal stress and grain shape on granular friction: Results of discrete element simulations
journal, January 2004


Friction of sheared granular layers: Role of particle dimensionality, surface roughness, and material properties: SHEARED GRANULAR LAYERS
journal, March 2007

  • Knuth, Matthew; Marone, Chris
  • Geochemistry, Geophysics, Geosystems, Vol. 8, Issue 3
  • DOI: 10.1029/2006GC001327

Influence of grain characteristics on the friction of granular shear zones: GRAIN SHAPE INFLUENCE ON FRICTION
journal, October 2002

  • Mair, Karen; Frye, Kevin M.; Marone, Chris
  • Journal of Geophysical Research: Solid Earth, Vol. 107, Issue B10
  • DOI: 10.1029/2001JB000516

A novel three-dimensional contact model for granulates incorporating rolling and twisting resistances
journal, April 2015


Modeling of rock friction: 1. Experimental results and constitutive equations
journal, January 1979


Influence of weakening minerals on ensemble strength and slip stability of faults: Influence of Weakening Minerals on Fault
journal, September 2017

  • Wang, Chaoyi; Elsworth, Derek; Fang, Yi
  • Journal of Geophysical Research: Solid Earth, Vol. 122, Issue 9
  • DOI: 10.1002/2016JB013687

Numerical Recipes: The Art of Scientific Computing
journal, November 1987


Growth and deformation mechanisms of talc along a natural fault: a micro/nanostructural investigation
journal, March 2009

  • Viti, Cecilia; Collettini, Cristiano
  • Contributions to Mineralogy and Petrology, Vol. 158, Issue 4
  • DOI: 10.1007/s00410-009-0395-4

Rolling friction as a technique for modelling particle shape in DEM
journal, February 2012


Earthquake nucleation on faults with rate-and state-dependent strength
journal, September 1992


Slip instability and state variable friction laws
journal, December 1983


Fluid-rock reaction weakening of fault zones
journal, July 1995

  • Wintsch, R. P.; Christoffersen, R.; Kronenberg, A. K.
  • Journal of Geophysical Research: Solid Earth, Vol. 100, Issue B7
  • DOI: 10.1029/94JB02622

Influence of particle characteristics on granular friction
journal, January 2005

  • Anthony, Jennifer L.
  • Journal of Geophysical Research, Vol. 110, Issue B8
  • DOI: 10.1029/2004JB003399

Laboratory-Derived Friction laws and Their Application to Seismic Faulting
journal, May 1998


Influence of dilatancy on the frictional constitutive behavior of a saturated fault zone under a variety of drainage conditions
journal, January 2011

  • Samuelson, Jon; Elsworth, Derek; Marone, Chris
  • Journal of Geophysical Research, Vol. 116, Issue B10
  • DOI: 10.1029/2011JB008556

A discrete numerical model for granular assemblies
journal, March 1979


Numerical recipes: The art of scientific computing
journal, January 1987


Numerical Recipes: The Art of Scientific Computing
journal, January 1989


Numerical recipes — The art of scientific computing
journal, March 1988