GSA Connects 2022 meeting in Denver, Colorado

Session No. 217
Wednesday, 12 October 2022: 8:00 AM-12:00 PM
507 (Colorado Convention Center)

T39. New Insights into the Evolution and Geodynamics of Metamorphic Core Complexes in North America and Around the World

GSA Structural Geology and Tectonics Division; GSA Geophysics and Geodynamics Division; GSA Geochronology Division; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

 

Andrew Zuza, Nikki Seymour and Gilby Jepson, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
8:05 AM
MCC FAQ (Invited Presentation)
WHITNEY, Donna1, TEYSSIER, Christian1 and REY, Patrice2, (1)Department of Earth & Environmental Sciences, University of Minnesota, Minneapolis, MN 55455, (2)EarthByte Research Group, School of Geosciences, The University of Sydney, Sydney, NSW 2006, Australia
8:25 AM
PRELIMINARY CRUSTAL THICKNESS ESTIMATES FROM CHEMICAL MOHOMETRY ACROSS THE CHALLIS-KAMLOOPS MAGMATIC BELT IN SOUTHEASTERN BRITISH COLUMBIA AND NORTHEASTERN WASHINGTON STATE
SCHMIDTKE, Eric, MA Geol Sci1, GIBSON, Daniel H.2, THORKELSON, Derek1 and LUFFI, Peter3, (1)Earth and Atmospheric Sciences, Simon Fraser University, 8888 University Dr, Burnaby, BC V5A 1S6, Canada, (2)Earth Sciences, Simon Fraser University, Vancouver, BC V5A 1S6, Canada, (3)Sabba Stefanescu Institute of Geodynamics, Bucharest, Romania
8:40 AM
THE ANACONDA METAMORPHIC CORE COMPLEX: CRETACEOUS DUCTILE FLOW AND EOCENE DETACHMENT FAULTING FACILITATED BY LITHOSPHERIC MAGMATISM
FOSTER, David1, KALAKAY, Thomas J.2, LONN, Jeff3 and HEEG, Evan1, (1)Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611, (2)Department of Geology, Rocky Mountain College, 1511 Poly Drive, Billings, MT 59102, (3)Montana Bureau of Mines and Geology, Montana Tech, 1300 W. Park Street, Butte, MT 59701
8:55 AM
KILOMETER-SCALE RECUMBENT FOLDING, TECTONIC ATTENUATION, AND MID-CRUSTAL FLOW IN THE ANACONDA METAMORPHIC CORE COMPLEX, SOUTHWESTERN MONTANA
NEAL, Bryce1, LASKOWSKI, Andrew K.1, LONN, Jeff2, BURRELL, William B.1 and DITTRICH, Samantha R.1, (1)Department of Earth Sciences, Montana State University, 226 Traphagen Hall, P.O. Box 173480, Bozeman, MT 59717, (2)Montana Bureau of Mines and Geology, Montana Technological University, 1300 W. Park Street, Butte, MT 59701
9:10 AM
VERTIGO: MAKING SENSE OF DISEQUILIBRIUM AT THE BRITTLE-DUCTILE TRANSITION
GOTTARDI, Raphael, School of Geosciences, University of Louisiana, 611 McKinley Street, Hamilton Hall 311, Lafayette, LA 70504-0001, CASALE, Gabriele, Department of Geological and Environmental Sciences, Appalachian State University, 572 Rivers Street, Boone, NC 28608 and MCALEER, Ryan, U.S. Geological Survey, 954 National Center, Reston, VA 20192
9:25 AM
DRIP, DROP, REBOUND: A NEW MODEL FOR THE CRETACEOUS TO PALEOGENE TECTONIC EVOLUTION OF THE RUBY CORE COMPLEX AND SEVIER BELT HINTERLAND IN NORTHEASTERN NEVADA
MCGREW, Allen, Department of Geology and Environmental Geosciences, The University of Dayton, 300 College Park, Dayton, OH 45469-2364
 
9:40 AM
Break
9:55 AM
THE LOW-ANGLE BREAKAWAY SYSTEM FOR THE NORTHERN SNAKE RANGE DÉCOLLEMENT IN THE SCHELL CREEK AND DUCK CREEK RANGES, EASTERN NEVADA, USA: IMPLICATIONS FOR THE STRUCTURAL EVOLUTION OF THE SNAKE RANGE CORE COMPLEX
LONG, Sean, Washington State UniversitySchool of the Environment, PO Box 642812, Pullman, WA 99164-2812, LEE, Jeffrey, Colorado School of MinesGeophysics. Green Center Rm 283, 924 16th St, Golden, CO 80401-1868 and BLACKFORD, Nolan, School of the Environment, Washington State University, Washington State University, Pullman, WA 99163
10:10 AM
DUCTILE STRAIN IN THE FOOTWALL OF THE NORTHERN SNAKE RANGE METAMORPHIC CORE COMPLEX, EASTERN NEVADA, USA: IMPLICATIONS FOR ITS STRUCTURAL EVOLUTION
BLACKFORD, Nolan1, LONG, Sean2, LEE, Jeffrey3 and STEVENS, Julia1, (1)School of the Environment, Washington State University, Washington State University, Pullman, WA 99163, (2)Washington State UniversitySchool of the Environment, PO Box 642812, Pullman, WA 99164-2812, (3)Colorado School of MinesGeophysics. Green Center Rm 283, 924 16th St, Golden, CO 80401-1868
10:25 AM
IN SITU OXYGEN ISOTOPE MEASUREMENTS BY SIMS REVEAL METEORIC WATER-ROCK INTERACTIONS IN DEEP-SEATED METAMORPHIC CORE COMPLEX FOOTWALL ROCKS
BONAMICI, Chloe1, SIRON, Guillaume2, ROIG GONZÁLEZ, Claudia1 and BLUM, Tyler B.1, (1)Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St., Madison, WI 53706, (2)Department of Biological, Geological, and Environmental Sciences, University of Bologna, Via Zamboni 67, Bologna, 40126, Italy
10:40 AM
SUPERPOSITION OF 80-55 MA HIGH P-T (0.7 GPA/750 °C) METAMORPHISM BY MID-TERTIARY DETACHMENT FAULTING IN THE WHIPPLE MOUNTAINS, SE CALIFORNIA
JARAMILLO, Valeria, Earth, Planetary, and Space Sciences, University of California, Los Angeles, 595 Charles Young Drive East, Los Angeles, CA 90095, CATLOS, Elizabeth J., Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX 78712, BELL, Elizabeth, Earth, Planetary, and Space Sciences, UCLA, Los Angeles, CA 90095, STOCKLI, Daniel F., Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, SCHMITT, Axel K., Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld 234-236, Heidelberg, 69120, Germany, CHIN, Emily J., Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093 and YIN, An, Dept of Earth, Planetary, and Space Sciences, University of California, Los Angeles, Los Angeles, CA 90095
10:55 AM
THE WEAK SIDE OF THE ATTIC CYCLADIC CRYSTALLINE COMPLEX (SOUTH AEGEAN, GREECE) (Invited Presentation)
SOUKIS, Konstantinos, Dept. of Geology and Geoenvironment, National and Kapodistrian University of Athens, Athens, Greece
11:15 AM
GEODYNAMICS OF STRAIN PARTITIONING FACILITATED BY MECHANICAL HETEROGENEITY AND OBLIQUE CONVERGENCE IN THE ARCUATE HIMALAYA
FAN, Suoya, Department of Earth Science, 1006 Webb Hall, University of California, Santa Barbara, CA 93106, MURPHY, Michael A., Department of Earth and Atmospheric Sciences, University of Houston, Rm 312, Science and Research Building 1, 3507 Cullen Blvd, Houston, TX 77204-5007 and WHIPP, David, Geosciences and Geography, University of Helsinki, P.O. Box 68, University of Helsinki, FI-00014, FINLAND
 
11:30 AM
Concluding Remarks
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