GSA Connects 2021 in Portland, Oregon

Session No. 35
Sunday, 10 October 2021: 1:30 PM-5:30 PM
A106 (Oregon Convention Center)

T6. Hot Rocks: High-Temperature Microstructures from Mantle to Surface

GSA Structural Geology and Tectonics Division; GSA Geochronology Division; GSA Geophysics and Geodynamics Division

 

Morgan Monz, Hannah Blatchford and Zachary D. Michels, Advocates
Paper #
Start Time
 
1:30 PM
Introductory Remarks
1:35 PM
TRACKING DYNAMIC RECRYSTALLIZATION ACROSS A BROAD RANGE OF HOMOLOGOUS TEMPERATURES AND STRESSES (Invited Presentation)
CROSS, Andrew1, FAN, Sheng2, PRIOR, David2, SKEMER, Philip3, GOLDSBY, David4, HAGER, Travis4, KIDDER, Steven5, NEGRINI, Marianne2, QI, Chao6 and STIPP, Michael7, (1)Department of Geology and Geophysics, Woods Hole Oceanographic Institution, 266 Woods Hole Rd, MS #08, Woods Hole, MA 02543-1535, (2)Department of Geology, University of Otago, 360 Leith Street, Dunedin, 9016, New Zealand, (3)Dept. of Earth and Planetary Sciences, Washington University in St Louis, Saint Louis, MO 63130, (4)Department of Earth and Environmental Science, University of Pennsylvania, 251 Hayden Hall, 240 South 33rd Street, Philadelphia, PA 19104, (5)Department of Earth and Atmospheric Sciences, City College of New York, 160 Convent Avenue, New York, NY 10031, (6)Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beitucheng Western Road, Chaoyang District, Beijing, 100029, China, (7)Institute of Geosciences, Martin-Luther-University Halle-Wittenberg, von-Seckendorff-Platz 3, Halle, 06120, Germany
1:55 PM
A TALE OF TWO FABRICS: AN EBSD INVESTIGATION OF CRYSTAL POPULATIONS IN A DOLERITE DIKE
HULSEY, Kaitlyn and CURRIER, Ryan, The Department of Geosciences, University of West Georgia, 1601 Maple St., Carrollton, GA 30118
2:10 PM
EFFECTS OF SHEAR-INDUCED MELT SEGREGATION AND STRAIN PARTITIONING ON OLIVINE MICROSTRUCTURES
MICHELS, Zachary1, ZIMMERMAN, Mark E.2, KOHLSTEDT, David L.2 and HANSEN, Lars N.2, (1)Department of Geosciences, University of Arizona, Tucson, AZ 85721, (2)School of Earth and Environmental Sciences, University of Minnesota - Twin CIties, Minneapolis, MN 55455
2:25 PM
INVESTIGATING THE ROLE OF INITIAL MICROSTRUCTURAL FEATURES ON PHASE MIXING AND LOCALIZATION DURING DEFORMATION OF OLIVINE-BEARING ROCKS (Invited Presentation)
WIESMAN, Harison1, MICHELS, Zachary2, ZIMMERMAN, Mark E.3 and KOHLSTEDT, David L.3, (1)School of Physics and Astronomy, University of Minnesota - Twin CIties, Minneapolis, MN 55455, (2)School of Earth and Environmental Sciences, University of Minnesota - Twin CIties, Minneapolis, MN 55455; Department of Geosciences, University of Arizona, Tucson, AZ 85721, (3)School of Earth and Environmental Sciences, University of Minnesota - Twin CIties, Minneapolis, MN 55455
2:45 PM
INVESTIGATING THE CONTACT AUREOLE AND EMPLACEMENT MECHANISMS OF AN UPPER CRUSTAL ULTRAMAFIC PLUTON NEAR EMIGRANT GAP, CALIFORNIA
LEUCHTER, Ethan, Department of Geological Sciences and Engineering, University of Nevada, Reno, 2643 Powder Drive, Reno, NV 89503 and CAO, Wenrong, Department of Geological Sciences and Engineering, University of Nevada, Reno, 1664 N Virginia St, Reno, NV 89557
3:00 PM
PETROCHRONOLOGIC CONSTRAINTS ON ACCRETION, EXTRUSION, AND INVERTED METAMORPHISM IN THE GNEISS DOME BELT, APPALACHIAN OROGEN
HILLENBRAND, Ian1, WILLIAMS, Michael L.2, PETERMAN, Emily3, JERCINOVIC, M.J.2 and DIETSCH, Craig4, (1)U.S. Geological Survey, Denver Federal Center, Denver, CO 80225; Department of Geosciences, University of Massachusetts, Amherst, 627 N Pleasant St, Amherst, MA 01003-9354, (2)Department of Geosciences, University of Massachusetts, Amherst, 627 N Pleasant St, Amherst, MA 01003-9354, (3)Department of Earth and Oceanographic Science, Bowdoin College, Brunswick, ME 04011, (4)Department of Geology, University of Cincinnati, 500 Geology Physics Building, Cincinnati, OH 45221-0013
3:15 PM
MICROSTRUCTURAL AND GEOCHEMICAL CHARACTERIZATION OF TITANITE DEFORMED IN TORSION: POTENTIAL IMPLICATIONS FOR PETROCHRONOLOGY OF DEFORMED ROCKS
BLATCHFORD, Hannah1, FAYON, Annia K.1 and MICHELS, Zachary2, (1)Department of Earth & Environmental Sciences, University of Minnesota, Minneapolis, MN 55455, (2)Department of Geosciences, University of Arizona, Tucson, AZ 85721
3:30 PM
SPATIAL AND TEMPORAL VARIATIONS IN KINEMATIC DEFORMATION GEOMETRY WITHIN A CRUSTAL-SCALE SHEAR ZONE NETWORK: MICRO- TO REGIONAL-SCALE PARTITIONING OF OBLIQUE CONVERGENCE ALONG THE GONDWANA MARGIN, FIORDLAND, NEW ZEALAND (Invited Presentation)
MIRANDA, Elena1, KLEPEIS, Keith A.2, SCHWARTZ, Joshua3, DIETEL, Matthew3, PAGE, Brandon1 and BROWN, Virginia1, (1)Department of Geological Sciences, California State University Northridge, 18111 Nordhoff St., Northridge, CA 91330, (2)Department of Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, (3)Department of Geological Sciences, California State University Northridge, 18111 Nordhoff Street, Northridge, CA 91330-8266
3:50 PM
LINKING REGIONAL TECTONICS WITH MICROSTRUCTURAL FABRICS USING ELECTRON BACKSCATTER DIFFRACTION AND CRYSTALLOGRAPHIC VORTICITY AXIS ANALYSIS IN THE GREBE SHEAR ZONE, FIORDLAND, NEW ZEALAND
DIETEL, Matthew1, MIRANDA, Elena1, KLEPEIS, Keith A.2 and SCHWARTZ, Joshua, PhD3, (1)Department of Geological Sciences, California State University Northridge, 18111 Nordhoff St., Northridge, CA 91330, (2)Department of Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, (3)Department of Geological Sciences, California State University Northridge, 18111 Nordhoff Street, Northridge, CA 91330-8266
4:05 PM
SPATIALLY VARIABLE COSEISMIC TEMPERATURE RISE AND TRANSIENT RHEOLOGY ALONG HEMATITE FAULT MIRRORS IN THE WASATCH FAULT ZONE, UTAH, USA
MCDERMOTT, Robert, Alaska Science Center, U.S. Geological Survey, Anchorage, AK 99508, AULT, Alexis K., Department of Geosciences, Utah State University, 4505 Old Main Hl, Logan, UT 84322-4505, EVANS, James P., Department of Geosciences, Utah State University, 4505 Old Main Hill, Logan, UT 84322, WETZEL, Kelsey F., Department of Geological Sciences, University of Idaho, Moscow, ID 83844 and SHEN, Fen-Ann, Microscopy Core Facility, Utah State University, Logan, UT 84322
4:20 PM
IMPACT OF PHYLLOSILICATE DISTRIBUTION, SPATIAL ARRANGEMENT AND INTERCONNECTIVITY ON QUARTZ RECRYSTALLIZATION, RAFT RIVER MOUNTAINS DETACHMENT SHEAR ZONE, UTAH
ECONOMOU, John, School of Geosciences, University of Louisiana at Lafayette, 611 McKinley Street, Hamilton Hall, Lafayette, LA 70504, GOTTARDI, Raphaƫl, University of LouisianaSchool of Geosciences, 611 McKinley Street, Hamilton Hall 311, Lafayette, LA 70504-0001 and CASALE, Gabriele, Geological and Environmental Sciences, Appalachian State University, 572 Rivers Street, Boone, NC 28608
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