MR41E:
Localized Deformation of Lithospheric Materials: From Grains to Tectonic Plates I

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Session ID#: 34713

Session Description:
Localized deformation can occur at a range of length scales covering orders of magnitude, from sub-millimeter cracks and slip bands to fault and shear zone systems extending hundreds of kilometers along plate boundaries. The wide range of P-T-X conditions and length scales of deformation present in the lithosphere result in a variety of mechanisms to accommodate strain localization, and the resulting fabrics and microstructures have a profound impact on the long-term rheological properties of the crust and upper mantle. This session aims to address the breadth of deformation mechanisms that localize strain in the lithosphere, from the brittle to the ductile regime, and how these mechanisms affect lithospheric strength and microstructural evolution. We welcome contributions from field observations, laboratory experiments, and numerical modeling to elucidate the mechanisms acting on geologic materials over a wide range of conditions, length scales, and time scales.
Primary Convener:  Kathryn M. Kumamoto, University of Minnesota - Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States
Conveners:  Christopher Thom, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States and Yuval Boneh, Washington University in St Louis, Earth and Planetary Sciences, St. Louis, MO, United States
Chairs:  Christopher Thom, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States, Kathryn M. Kumamoto, University of Minnesota - Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States and Yuval Boneh, Brown University, Providence, RI, United States
OSPA Liaison:  Kathryn M. Kumamoto, University of Minnesota - Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States

Cross-Listed:
  • T - Tectonophysics
Index Terms:

3902 Creep and deformation [MINERAL PHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Rapid Grain Size Reduction in the Upper Mantle at a Plate Boundary (Invited) (211839)
Steven B Kidder1, James Scott2, David John Prior3 and Emily Jean Lubicich1, (1)CUNY City College of New York, New York, NY, United States, (2)University of Otago, Dunedin, New Zealand, (3)University of Otago, Geology, Dunedin, New Zealand
Experimental ductile reactivation of pseudotachylyte-bearing faults. (270110)
Giulio Di Toro, University of Manchester, Manchester, United Kingdom, Francois Xavier Passelegue, The University of Manchester, SEAES, Manchester, United Kingdom, Jacob Tielke, University of Liverpool, Liverpool, United Kingdom and Julian Mecklenburgh, University of Manchester, Department of Earth and Environmental Sciences, Manchester, United Kingdom
Geomechanical Modeling of Deformation Banding in the Navajo Sandstone, San Rafael Monocline, Utah (253795)
Marte Gutierrez, Colorado School of Mines, Golden, CO, United States, Anja Sundal, University of Oslo, Oslo, Norway and Elizabeth Sandra Petrie, Western Colorado University, Natural and Environmental Sciences - Petroleum Geology, Gunnison, United States
Cyclic Ductile-Brittle Deformation during Temperature Decrease in Quartz-Rich Mylonites: Insights from the Calamita Schists (Elba Island, Italy) (248917)
Samuele Papeschi, CNR Institute of Geosciences and Earth Resources, Florence, Italy; University of Florence, Department of Earth Sciences, Florence, Italy, Luca Menegon, Plymouth University, School of Geography, Earth and Environmental Sciences, Plymouth, PL4, United Kingdom and Giovanni Musumeci, University of Pisa, Department of Earth Sciences, Pisa, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy
Time-resolved 3D imaging of the localization of microscale precursors prior to faulting in crystalline rocks (Invited) (207580)
François Renard, University of Oslo, Oslo, Norway, Neelima Kandula, University of Oslo, Departmenf of Geosciences / PGP, Oslo, Norway, Benoit Cordonnier, ESRF European Synchrotron Radiation Facility, Grenoble, France, Dag Kristian Dysthe, University of Oslo, Department of Physics, Oslo, Norway and Jerome Weiss, University Grenoble Alpes, ISTerre, Grenoble, France
Failure of Sierra White granite under general states of stress (209435)
Mathew D Ingraham1, Thomas A Dewers1, Moo Lee2, Olivia Holdman3, Cecilia Cheung4 and Bezalel C Haimson5, (1)Sandia National Laboratories, Albuquerque, United States, (2)Sandia National Lab, Albuquerque, NM, United States, (3)Missouri University of Science and Technology, Rolla, MO, United States, (4)University of Wisconsin Madison, Materials Science and Engineering, Civil & Environmental Engineering, Madison, WI, United States, (5)Univ of Wisc-Madison, Geological Engineering and Materials Science and Engr., Madison, WI, United States
Intraplate faulting, stress accumulation, and shear localization of a crust-upper mantle system with nonlinear viscoelastic rheologies (230647)
Xuelei Zhang, Nagoya university, Nagoya, Japan and Takeshi Sagiya, Nagoya Univ, Nagoya, Japan
Time-resolved acoustic emission tomography in the laboratory: tracking localised damage in rocks (273567)
Nicolas Brantut, University College London, Department of Earth Sciences, London, United Kingdom

See more of: Mineral and Rock Physics