T006
Deformation mechanisms in Earth’s continental crust: Building on the contributions of Jan Tullis
Session ID#: 249894
Session Description:
During her career, Jan Tullis (1943-2024) shaped much of our understanding of the deformation mechanisms in felsic rocks in Earthâs continental crust. She along with her students, postdocs and collaborators published landmark experimental studies of the deformation mechanisms, textures and rheology of quartzites, feldspars, granites, gneisses, syndeformational reactions and melt migration mechanisms in the continental crust. We encourage contributions from experimental, field-based and theoretical studies that expand and build on this body of research. We especially encourage graduate and undergraduate students to contribute to this session.
Co-Sponsor(s):
Index Terms:
3902 Creep and deformation [MINERAL PHYSICS]
3904 Defects [MINERAL PHYSICS]
8110 Continental tectonics: general [TECTONOPHYSICS]
8159 Rheology: crust and lithosphere [TECTONOPHYSICS]
Primary Convener: Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Conveners: Caleb W Holyoke III, University of Akron, Department of Geosciences, Akron, United States, Nicholas M Beeler, USGS Cascades Volcano Observatory, Vancouver, United States and Keishi Okazaki, Hiroshima University, Higashi-Hiroshima, Japan
Deformation Mechanism of Magnetite in a Tectonically Deformed BIF – A study of Nanostructures, Dislocation Density and Strain Based on SEM-EBSD and TEM Analyses (1848527)
Manish A Mamtani, Indian Institute of Technology Kharagpur, Department of Geology & Geophysics, Kharagpur, India, Agnes Kontny, Karlsruhe Institute of Technology, Institute of Applied Geosciences (Structural Geology & Tectonics),, Karlsruhe, Germany and Christoph Hilgers, Karlsruhe Institute of Technology, Institute for Applied Geosciences - Structural Geology & Tectonics, Karlsruhe, Germany
Crystal Plasticity of Perthitic K, Na Feldspar: Mechanical Anisotropy of Exsolved Single Crystals as Composites (Invited) (1849464)
Abhishek Prakash1, Claire Martin2,3, Megan Ryan2,4 and Andreas K Kronenberg2, (1)Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States, (2)Texas A&M University, Department of Geology and Geophysics, College Station, United States, (3)StraboSpot, College Station, United States, (4)Department of Geology, University of Maryland, College Park, United States
Deformation-driven Distribution of OH at the Nanoscale (1852314)
Stefania Corvo1, Yue-Sheng Chen2, Natalie Holmes2, Michael Forster3, Gregory Yaxley3, Matteo Maino4, Antonio Langone4, Julie Cairney2 and Sandra Piazolo5, (1)University of Pavia, Pavia, Italy, (2)Australian Centre for Microscopy and Microanalysis, The University of Sydney, NSW, Australia, Sydney, Australia, (3)Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia, Canberra, Australia, (4)Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy, Pavia, Italy, (5)University of Leeds, School of Earth and Environment, Leeds, United Kingdom
Pressure Solution, Fluid Flow, and Healing of the Subduction Interface (1861033)
Donald M Fisher, Pennsylvania State University Main Campus, University Park, PA, United States, John N Hooker, University of the Incarnate Word, San Antonio, TX, United States, Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, Andrew Smye, Pennsylvania State University Main Campus, University Park, United States and Leah Youngquist, Penn State/College of Earth and Mineral Sciences, Bellefonte, PA, UNITED STATES
Evaluating the application of electron backscatter diffraction (EBSD) to calcite twin paleopiezometry (1881423)
Andrew J Cross, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States, Halley Wilkinson, Smith College, Department of Geosciences, Northampton, MA, United States, Erik Rybacki, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, J Brian Evans, Massachusetts Institute of Technology, Cambridge, MA, United States and Matej Pec, Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, United States
Frictional Behavior of Carbonate-Rich Gouges from the Hikurangi, Costa Rica, and Atacama Subduction Margins (1887567)
Otis Wickenhaeuser, University of California Santa Cruz, Santa Cruz, CA, United States and Heather M Savage, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States
Measuring Stress In High Pressure Deformation Experiments With High Speed Fiber-Optics (1895861)
Eric Burdette, U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States and Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Characterizing quartz rheology through load-stepping experiments, from diffusion to dislocation creep (1907596)
Leif Tokle, ETH Zurich, Zürich, State (optional), Switzerland, Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Whitney M Behr, Structural Geology & Tectonics Group, Dept. of Earth & Planetary Sciences, ETH Zürich, Zürich, Switzerland
Initiated Weakening in High-Strain Rock Driven by Rheological Bridge Zone (1911765)
He Feng1,2, Christopher C Gerbi2, Scott Johnson2, Alicia M Cruz-Uribe3 and Martin Yates2, (1)University of Iowa, School of Earth, Environment, and Sustainability & The Materials Analysis, Testing, and Fabrication (MATFab) Facility, Iowa City, United States, (2)University of Maine, School of Earth and Climate Sciences, Orono, United States, (3)University of Maine, School of Earth and Climate Sciences, Orono, ME, United States
Assessment of Flow Laws for Quartz-Rich Rocks at Conditions Near the Brittle-Plastic Transition. (1919587)
Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Donald M Fisher, Pennsylvania State University, Department of Geosciences, University Park, United States
EBSD-Based Calibration of Differential Stress from Experimentally Deformed Quartz Using the Perimeter-Area Fractal Dimension (1921389)
Scott Johnson1, Won Joon Song1, Christopher C Gerbi1, Erik Anderson2, Senthil Vel3, David John Prior4 and Michael Stipp5, (1)University of Maine, School of Earth and Climate Sciences, Orono, United States, (2)University of Maine, Earth and Climate Sciences, Orono, United States, (3)University of Maine, Mechanical Engineering, Orono, United States, (4)University of Otago, Geology, Dunedin, New Zealand, (5)Martin Luther University of Halle-Wittenberg, Geosciences, Halle, Germany
Crustal strength profiles, shear heating, and ductile shear zone width (1924879)
Nicholas M Beeler, USGS Cascades Volcano Observatory, Vancouver, United States, Hannah Shabtian, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States and Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Observation of Partial Melt-Induced Seismicity in Gneisses During Low Differential Stress Load Relaxation Experiments (1924897)
Hoagy O. OGhaffari, PhD, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, United States, Caleb W Holyoke III, University of Akron, Department of Geosciences, Akron, United States, Cassandra Seltzer, Lamont-Doherty Earth Observatory (LDEO), New York, United States and Matej Pec, Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, United States
Weak Mechanical Anisotropy of Monoclinic Potassium Feldspar: Multiple Slip Systems of Sanidine and their Relative Lattice Resistances (1925551)
Megan Ryan1,2, Abhishek Prakash3 and Andreas K Kronenberg1, (1)Texas A&M University, Department of Geology and Geophysics, College Station, United States, (2)University of Maryland, College Park, United States, (3)Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States
Classical molecular dynamics study of dislocation core, kinks, and jogs in α -quartz (1932165)
Ikuchi Funahashi1, Ryo Kobayashi2, Ohmura Satoshi3 and Kenji Kawai1, (1)The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan, (2)Nagoya Institute of Technology, Department of Applied Physics, Nagoya, Japan, (3)Ehime University, Matsuyama, Japan
Reading the record of calcic-amphibole textural data for deformation mechanisms (1933021)
Elena Miranda, California State University Northridge, Northridge, CA, United States, Cailey Condit, University of Washington, Seattle, United States, Matej Pec, Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, United States and Jason N Ott, University of Washington, Earth and Space Sciences, Seattle, United States
Coupled crystal plastic and dissolution-precipitation deformation processes in amphibole (lower crust HT mylonite): integration of field mapping (Carg project), microstructural analysis, crystal preferred orientation (CPO) and rheological modelling (1940254)
Matteo Maino1, Stefania Corvo1, Sandra Piazolo2, Leonardo Casini3 and Antonio Langone4, (1)University of Pavia, Pavia, Italy, (2)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (3)University of Sassari, Dipartimento di scienze Chimiche Fisiche Matematiche e Naturali, Sassari, Italy, (4)Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy, Pavia, Italy
Aspect Ratio of Recrystallized Quartz Grains as a Quantitative Strain Rate Indicator: Optical vs. EBSD-Based Characterization of Steady-State Microstructures (1959533)
Kazuma Nakakoji, The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan, Ichiko Shimizu, Kyoto University, Division of Earth and Planetary Sciences, Kyoto, Japan and Katsuyoshi Michibayashi, Nagoya University, Nagoya, Japan
Melt-Induced Strengthening of Quartzites Due to Dehydration of Quartz Grains (1969217)
Caleb W Holyoke III1, Maria Razo1, Karl Wehner1 and Kevin H Mahan2, (1)University of Akron, Geosciences, Akron, United States, (2)University of Colorado at Boulder, Geological Sciences, Boulder, United States
Frictional properties and stability of quartz gouge at elevated temperatures (1969974)
Harison Wiesman1, Lars N Hansen2, Kristina Okamoto1, Heather M Savage3 and Amy Grace Ryan4, (1)University of Minnesota Twin Cities, Earth and Environmental Sciences, Minneapolis, United States, (2)University of Minnesota - Twin Cities, Department of Earth and Environmental Sciences, Minneapolis, United States, (3)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, (4)Rice University, Earth, Environmental and Planetary Sciences, Houston, United States
Experimental Study of Chlorite Rheology at Subduction Zone Conditions (1974376)
Roxy Perazzo, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Hannah Shabtian, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States and Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Physical Properties and Microstructures of Plutonic Rocks from the Ashland Pluton, Klamath Mountains (1974469)
Dawson Mooney1, Hiroko Kitajima2, Richard Hugo3 and Asa McNaughton3, (1)Texas A&M University College Station, College Station, TX, United States, (2)Texas A&M University, Center for Tectonophysics and the Department of Geology & Geophysics, College Station, United States, (3)Portland State University, Portland, United States
Deformation Processes of Quartz During the Seismic Cycle at the Frictional-to-Viscous Transition in a Seismogenic Bimaterial Shear Zone (1985535)
Won Joon Song1, Scott Johnson1, Bo Ra Song1, Walter Sullivan2 and Christopher C Gerbi1, (1)University of Maine, School of Earth and Climate Sciences, Orono, United States, (2)Colby College, Department of Geology, Waterville, United States
