T008
Architecture, Kinematics, Timing, and Rheology of Shear Zones
Session ID#: 81408
Session Description:
Shear zones may be characterized by complex spatially and temporally varying three-dimensional architecture, kinematics, strain history, and mechanical behaviour. Treating shear zones as systems rather than individual features, and integrating results across disciplines within the geological science, has led to significant progress in understanding their evolution. This session invites contributions investigating shear zones in a range of observation scales and approaches, such as field observations, microanalyses, numerical and physical models, innovative geochronology, rock deformation experiments, and theoretical considerations.
Index Terms:
8011 Kinematics of crustal and mantle deformation [STRUCTURAL GEOLOGY]
8012 High strain deformation zones [STRUCTURAL GEOLOGY]
8030 Microstructures [STRUCTURAL GEOLOGY]
8031 Rheology: crust and lithosphere [STRUCTURAL GEOLOGY]
Primary Convener: Vasileios Chatzaras, University of Sydney, School of Geosciences, Sydney, NSW, Australia
Convener: Basil Tikoff, Univ Wisconsin, Madison, WI, United States
Primary Liaison: Vasileios Chatzaras, University of Sydney, School of Geosciences, Sydney, NSW, Australia
Deformation of Circular Inclusions in a Ductile Elasto-Plastic Strain-Softening Analogue Material: Pure and Simple (486069)
David A Boutelier, University of Newcastle, Callaghan, Australia, Laura Quigley, Queensland University of Technology, Earth, Environmental and Biological Sciences, Geology & Geochemistry, Brisbane, Australia, Christoph Eckart Schrank, Queensland University of Technology, School of Earth, Environmental and Biological Sciences, Brisbane, Australia and Klaus Regenauer-Lieb, University of New South Wales, North Ryde, NSW 2052, School of UNSW petroleum engineering, Sydney, Australia
Water pumping in mantle shear zones: From field observations to experimental evidence (Invited) (487989)
Jacques Précigout, Université d'Orléans, Institut des Sciences de la Terre (ISTO), Orléans, France, Cécile Prigent, University of Delaware, Department of Geological Sciences, Newark, DE, United States, Holger Stunitz, Universitetet i Tromso, Tromso, Norway, Laurie Palasse, Bruker Nano GmbH, Berlin, Germany, Anthony Pochon, Bureau de Recherches Géologiques et Minières (BRGM), Orléans, France and Johan Villeneuve, CRPG, Université de Lorraine, CNRS 7358, Vandoeuvre-Les-Nancy, France
Seismic Signature of Shear Zones: Insights from 2-D PSF-based Convolution Modelling (507752)
Haakon Fossen1, Thilo Wrona1, Isabelle Lecomte1, Christian Haug Eide1, Robert Gawthorpe1 and Geane Carolina Cavalcante2, (1)University of Bergen, Department of Earth Science, Bergen, Norway, (2)University of Tromsø, Department of geology, Tromsø, Norway
Deformation mechanisms in the hydrated lower crust: Competitive strain softening processes in the Eastern Athabasca Mylonite Triangle. (510029)
Riccardo Graziani1, Kyle Larson2 and Mathieu Soret2, (1)University of British Columbia Okanagan, Kelowna, BC, Canada, (2)University of British Columbia, Earth, Environmental and Geographic Sciences, Kelowna, BC, Canada
Seismic cycle recorded by microstructural and stress variations in the mantle section of an oceanic transform zone (516106)
Vasileios Chatzaras, University of Sydney, School of Geosciences, Sydney, NSW, Australia, Basil Tikoff, Univ Wisconsin, Madison, WI, United States, Seth C Kruckenberg, Boston College, Earth and Environmental Sciences, Chestnut Hill, MA, United States, Sarah Titus, Carleton College, Northfield, MN, United States, Christian Teyssier, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, MN, United States and Martyn R. Drury, Utrecht University, Utrecht, Netherlands
SHEAR ZONES, VEINS, AND METASOMATISM AS EVIDENCE OF LATEST TECTONO-MAGMATIC ACTIVITY IN THE SOUTH DAKOTA BLACK HILLS (520620)
Jeffrey K. Greenberg, Wheaton College, Geology and Environmental Science, Wheaton, IL, United States and Stephen T Allard, Winona State Univ, Winona, MN, United States
What Allows Multi-Plane Detachment Systems to Take Off? (554268)
Mark Coleman, University of Ottawa, Ottawa, ON, Canada, Bernhard Grasemann, University of Vienna, Department of Geodynamics and Sedimentology, Vienna, Austria, David A Schneider, Univ of Ottawa, Ottawa, ON, Canada and Konstantinos I Soukis, National and Kapodistrian University of Athens, Geology and Geoenviroment, Athens, Greece
Kinematic and Textural Analysis of Titanite: Establishing a Microstructural Framework for a High-Temperature Deformation Geochronometer (554833)
Sarah F Shields, University of Wisconsin Madison, Madison, WI, United States, Basil Tikoff, Univ Wisconsin, Madison, WI, United States, Claire Harrigan, Boise State University, Boise, ID, United States and Mark David Schmitz, Dept Geoscience, Boise, ID, United States
Lithostratigraphy and Metamorphism of the Lesser and Higher Himalaya in Trishuli and Langtang Valleys, North-Central Nepal (563071)
Toya Nath Ghimire1, Lalu Paudel2, Frederic Girault3, Frédéric Perrier3, Subesh Ghimire2, Kamala Kant Acharya2 and Badri Prasad Ghimire4, (1)Peoples Energy Limited, Kathmandu, Nepal, (2)Tribhuvan University, Kathmandu, Nepal, (3)Institut de Physique du Globe de Paris, Paris, France, (4)California State University Chico, Department of Biological Sciences, Chico, CA, United States
Characterization of outcrop structures, microstructures and deformation conditions of the Bear Mountain Fault Zone in the Sierra Nevada foothills, California (564949)
Quentin Pierce Austin Burgess, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, NV, United States and Wenrong Cao, University of Nevada Reno, Department of Geological Sciences and Engineering, Reno, NV, United States
Tectonic Evolution of the Okhaldhunga tectonic window as evidenced by a shear zone along the Dudhkoshi River, Central Nepal (569484)
Kamala Kant Acharya1, Subesh Ghimire1, Megh Raj Dhital2 and Toya Nath Ghimire3, (1)Tribhuvan University, Kathmandu, Nepal, (2)Tribuvan University, Kathmandu, Nepal, (3)Peoples Energy Limited, Kathmandu, Nepal
Architecture and detailed kinematic analysis of an active shear zone. The Alhama de Murcia Fault (SE Iberia). (576042)
Jorge Alonso-Henar1, Emilio Rodriguez-Escudero Dr2, Carlos Fernandez3, Jose J. Martínez-Díaz4, Paula Herrero-Barbero1 and Jose Antonio Alvarez Gomez4, (1)Universidad Complutense de Madrid, Department of Geodynamics, Madrid, Spain, (2)Complutense University of Madrid, Madrid, Spain, (3)University of Huelva, Huelva, Spain, (4)Complutense University of Madrid, Department of Geodynamics, Stratigraphy & Paleontology, Madrid, Spain
Shear zone- to crystal-scale orientation analysis of the crystallographic vorticity axis in the Eastern Highlands shear zone, Canadian Appalachian orogen. (597553)
Nicolas Piette-Lauziere1, Kyle Larson1, Dawn Kellett2 and Riccardo Graziani1, (1)University of British Columbia Okanagan, Kelowna, BC, Canada, (2)Geological Survey of Canada, Natural Resources Canada, Ottawa, ON, Canada
Zircon Microstructures and Element Mobility: Insight into Multistage Deformation Within Shear Zones of the Western Gneiss Region, Norway (598812)
Emily Dektar, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, CA, United States, Stacia M Gordon, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, NV, United States, Hannah Blatchford, University of Minnesota Twin Cities, Earth Sciences, Minneapolis, MN, United States, Andrew R Kylander-Clark, UC Santa Barbara, Santa Barbara, CA, United States and Donna L Whitney, University of Minnesota Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, MN, United States
Competing Influence of Compositional Variability and Metamorphism on Strain Localization in a Lower-Crustal, Transpressional Shear Zone, Fiordland, New Zealand (602491)
Peter Lindquist1, Keith Klepeis1, Elena Miranda2, Joshua Schwartz3 and Harold Stowell4, (1)University of Vermont, Burlington, VT, United States, (2)California State University Northridge, Northridge, CA, United States, (3)California State University Northridge, Geological Sciences, Northridge, CA, United States, (4)University of Alabama, Tuscaloosa, AL, United States
Clocking the entire lifecycle of a Tethyan detachment with structurally-controlled calcite geochronology (Invited) (626965)
Derya Gürer, University of Queensland, School of Earth and Environmental Sciences, Brisbane, Australia, Axel Gerdes, Goethe University Frankfurt, Institute of Geosciences, Frankfurt am Main, Germany, Richard Albert, Goethe University Frankfurt, Institute of Geosciences, Frankfurt, Germany and Christopher J Spencer, Curtin University, Earth Dynamics Research Group, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Perth, WA, Australia
