GSA Annual Meeting in Phoenix, Arizona, USA - 2019

Session No. 142
Monday, 23 September 2019: 1:30 PM-5:30 PM
Room 229A, North Building (Phoenix Convention Center)

T73. Structural Geology in the 21st Century: Rheology of Naturally Deformed Rocks

GSA Structural Geology and Tectonics Division

 

Basil Tikoff and Whitney M. Behr, Advocates
Paper #
Start Time
1:30 PM
AMPHIBOLE RHEOLOGY: INSIGHTS FROM NATURALLY DEFORMED DEEP CRUSTAL ROCKS AND HIGH TEMPERATURE DEFORMATION EXPERIMENTS (Invited Presentation)
CONDIT, Cailey B., Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, MAHAN, Kevin H., Department of Geological Sciences, University of Colorado at Boulder, 2200 Colorado Ave, Boulder, CO 80309-0399, PEC, Matej, Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave, 54-720, Cambridge, MA 02139 and CHIN, Emily J., Earth Science, Rice University, 6100 Main Street, MS 126, Houston, TX 77005
1:45 PM
PARTIAL MELTING ALONG SUBGRAIN BOUNDARIES: A POTENTIAL FACTOR INFLUENCING THE RHEOLOGY OF CRUSTAL ROCKS
LEVINE, Jamie S.F., Geological and Environmental Sciences, Appalachian State University, 572 Rivers Street, Boone, NC 28608 and RAHL, Jeffrey M., Department of Geology, Washington and Lee University, Lexington, VA 24450
2:00 PM
MICROSTRUCTURAL ANALYSIS AND KINEMATICS OF QUARTZOFELDSPATHIC MIGMATITIC GNEISSES WITHIN THE WILDHORSE DETACHMENT, PIONEER MOUNTAINS, IDAHO
MCFADDEN, Rory R.1, KRUCKENBERG, Seth C.2, SENJEM, Alex1 and TAYLOR, Jennifer M.3, (1)Department of Geology, Gustavus Adolphus College, St. Peter, MN 56082, (2)Department of Earth and Environmental Sciences, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, (3)Department of Earth Sciences, University of Minnesota, John T. Tate Hall, 116 Church Street SE, Suite 150, Minneapolis, MN 55455
2:15 PM
DOES STRESS VARY IN RHEOLOGICALLY HETEROGENEOUS SHEAR ZONES? INSIGHT FROM THE MYLONITES OF SECRET PASS, RUBY-EAST HUMBOLDT METAMORPHIC CORE COMPLEX, NEVADA
LEVY, Drew A., Nevada Bureau of Mines and Geology, University of Nevada, Reno, 1664 N. Virginia Street, Reno, NV 89557 and ZUZA, Andrew V., Nevada Bureau of Mines and Geology, University of Nevada, Reno, NV 89557
2:30 PM
RHEOLOGY OF A COAXIAL SHEAR ZONE IN THE VIRGINIA BLUE RIDGE: WET QUARTZITE DISLOCATION GLIDE AT ≤260°C AND LOW STRAIN RATES (Invited Presentation)
SINGLETON, John S., Department of Geosciences, Colorado State University, 1482 Campus Delivery, Fort Collins, CO 80523, RAHL, Jeffrey M., Department of Geology, Washington and Lee University, Lexington, VA 24450 and BEFUS, Kenneth, Geology, Baylor University, One Bear Place #97354, Waco, TX 76798
2:45 PM
EVALUATING FLOW LAWS FOR DISLOCATION CREEP IN QUARTZ: A CRITICAL COMPARISON TO NATURAL SHEAR ZONES
LUSK, Alexander Dmitri, Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740, CAWOOD, Tarryn, Department of Earth Sciences, University of Southern California, Zumberge Hall of Science (ZHS), 3651 Trousdale Pkwy, Los Angeles, CA 90089 and PLATT, John P., Department of Earth Sciences, University of Southern California, Zumberge Hall of Science, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740
3:00 PM
ANATOMY OF A SUBDUCTION PLATE INTERFACE DOWNDIP OF THE SEISMOGENIC ZONE: THE LEECH RIVER SHEAR ZONE, VANCOUVER ISLAND
SEYLER, Caroline and KIRKPATRICK, James, Department of Earth and Planetary Sciences, McGill University, 3450 University St, Montreal, QC H3A 0E8, Canada
3:15 PM
CALCULATION OF THE BEST-FIT HOMOGENEOUS STRAIN FROM A DISPLACEMENT FIELD USING DISPLACEMENT STRETCH PLOT AND STRAIN PROBE THEORY
VOLLMER, Frederick W., Geology Department, SUNY New Paltz, 1 Hawk Drive, New Paltz, NY 12561
 
3:30 PM
Break
3:45 PM
GRAIN-SCALE ELASTIC ENERGY DRIVES ROCK FABRIC DEVELOPMENT AND RHEOLOGICAL EVOLUTION (Invited Presentation)
JOHNSON, Scott E.1, SONG, Won Joon1, GERBI, Christopher C.1 and VEL, Senthil S.2, (1)School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, (2)Department of Mechanical Engineering, University of Maine, Orono, ME 04469
4:00 PM
CHARACTERIZATION OF SYNDEFORMATIONAL WATER PATHWAYS AND HYDROLYTIC WEAKENING WITHIN NATURALLY DEFORMED QUARTZ GRAINS ALONG A STRAIN GRADIENT
MARTIN, Chad, Department of Geosciences, University of Wisconsin-Milwaukee, Lapham Hall, Room 366, 3209 N. Maryland Ave., Milwaukee, WI 53211, CZECK, Dyanna M., Geosciences, University of Wisconsin-Milwaukee, 3209 North Maryland Avenue, Milwaukee, WI 53211 and YONKEE, Adolph, Department of Earth and Environmental Sciences, Weber State University, 1415 Edvalson St - DEPT 2507, Ogden, UT 84408-2507
4:15 PM
STRUCTURE, KINEMATICS, AND STRAIN PARTITIONING OF AN EXHUMED HIGH PRESSURE TERRAIN: THE ROAN WINDOW, NORWAY
NEWVILLE, Christine E., TEYSSIER, Christian, WHITNEY, Donna L. and BLATCHFORD, Hannah J., Department of Earth & Environmental Sciences, University of Minnesota, Minneapolis, MN 55455
4:30 PM
ASPERITY FLASH HEATING DURING LABORATORY EARTHQUAKES DETECTED WITH HEMATITE (U-TH)/HE THERMOCHRONOMETRY
CALZOLARI, Gabriele1, AULT, Alexis K.1, HIRTH, Greg2 and MCDERMOTT, Robert G.1, (1)Department of Geosciences, Utah State University, 4505 Old Main Hill, Logan, UT 84322, (2)Department of Earth, Environmental and Planetary Sciences, Brown University, Box 1846, 324 Brook St, Providence, RI 02912
4:45 PM
HEMATITE MICROTEXTURES AND (U–TH)/HE THERMOCHRONOMETRY OF THE HURRICANE FAULT, SOUTHWESTERN UTAH: EVIDENCE FOR A PALEOEARTHQUAKE?
TAYLOR, Madison P., AULT, Alexis K. and NEWELL, Dennis L., Department of Geosciences, Utah State University, 4505 Old Main Hill, Logan, UT 84322
5:00 PM
FAST AND FURIOUS ULTRACATACLASITES AND PSEUDOTACHYLYTES FROM CATASTROPHIC LANDSLIDES
FERRE, Eric C., School of Geosciences, University of Louisiana at Lafayette, Lafayette, LA 70504, BIEK, Robert F., Utah Geol Survey, PO Box 146100, Salt Lake City, UT 84114-6100, BIEDERMANN, Andrea, Institut für Geologie, University of Bern, Baltzerstrasse 1+3, Bern, 3012, Switzerland, HACKER, David B., Department of Geology, Kent State University, 221 McGilvrey Hall, Kent, OH 44242 and TAKAGI, Hideo, Dept. Earth Sciences, Faculty of Education and Integrated Arts and Sciences, Waseda University, (blg.6-111-1) 1-6-1 Nishiwaseda, Shinjuku, Tokyo, 169-8050, Japan
5:15 PM
CHEMICAL EFFECTS ON OPENING-MODE FRACTURE SIZE AND SPATIAL ARRANGEMENT
LAUBACH, Stephen E., Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, University Station, P.O. Box X, Austin, TX 78713-8924, WANG, Qiqi, Jackson School of Geosciences, The University of Texas at Austin, 23 San Jacinto Blvd & E 23rd St, Austin, TX 78712, FORSTNER, Stephanie R., Jackson School of Geosciences, University of Texas at Austin, 23 San Jacinto Blvd & E 23rd St, Austin, TX 78712 and HOOKER, John N., Department of Geosciences, Penn State University, 305 Deike Building, University, TX 78713
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