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Rocky Mountain Section - 73rd Annual Meeting - 2023

Session No. 2
Tuesday, 23 May 2023: 8:00 AM-12:00 PM
Longs Peak 302A (Lory Student Center)

T18. Crust Formation, Deformation, Metamorphism, Plutonism, and Thermal Evolution of the Rocky Mountains: Proterozoic to Present

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

 

Andreas Möller, Graham B. Baird, Timothy Grover and Kate Souders, Advocates
Paper #
Start Time
2-1
8:00 AM
PETROCHRONOLOGIC CONSTRAINTS ON FOUR TECTONO-METAMORPHIC EVENTS IN WESTERN COLORADO
HILLENBRAND, Ian, Department of Geosciences, University of Massachusetts, Amherst, 627 N Pleasant St, Amherst, MA 01003; U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver Federal Center, Denver, CO 80225, WILLIAMS, Michael, Department of Geosciences, University of Massachusetts Amherst, 627 N Pleasant St, Amherst, MA 01003, KARLSTROM, Karl, Department of Earth and Planetary Sciences, University of New Mexico, Northrop Hall, MSCO3-2040, 1 University of New Mexico, Albuquerque, NM 87131, GILMER, Amy K., U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver Federal Center, Denver, CO 80225, LOWERS, Heather, U.S. Geological Survey, Box 25046, M.S. 973, Denver Federal Center, Denver, CO 80225, JERCINOVIC, M.J., Department of Geosciences, University of Massachusetts, Amherst, 627 N Pleasant St, Amherst, MA 01003-9354 and SOUDERS, Kate, U.S. Geological Survey, Geology, Geophysics, and Geochemistry Science Center, Denver, CO 80225
2-2
8:20 AM
PALEOPROTEROZOIC CRUST GENERATION IN THE NORTHERN COLORADO FRONT RANGE
BAIRD, Graham, Earth & Atmospheric Sciences, University of Northern Colorado, Campus Box 100, 501 20th St., Greeley, CO 80639, GROVER, Timothy, Earth & Atmospheric Sciences, University of Northern Colorado, University of Northern Colorado, Campus Box 100, Greeley, CO 80639 and MAHAN, Kevin H., Department of Geological Sciences, University of Colorado Boulder, 2200 Colorado Avenue, UCB 399, Boulder, CO 80309-0399
2-3
8:40 AM
THE GREEN MOUNTAIN ARC–RAWAH BATHOLITH BOUNDARY IN THE SOUTHERN LARAMIE MOUNTAINS OF COLORADO—CORNELIUS CREEK SHEAR ZONE
WORKMAN, Jeremiah, U.S. Geological Survey, Geosciences and Environmental Change Science Center, P.O. Box 25046, DFC, MS 980, Denver, CO 80225
2-4
9:00 AM
THE ENIGMA OF THE PICURIS OROGENY IN COLORADO
KUIPER, Yvette D., Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401 and DANIEL, Christopher G., Geology & Environmental Geosciences, Bucknell University, Lewisburg, PA 17837
2-5
9:20 AM
CONSTRAINTS ON THE NATURE AND TIMING OF METAMORPHISM AND DEFORMATION OF STAUROLITE + ANDALUSITE ZONE METAPELITIC ROCKS IN BIG THOMPSON CANYON, NORTHERN COLORADO FRONT RANGE
GROVER, Timothy1, WILLIAMS, Michael L.2 and BAIRD, Graham B.1, (1)Earth & Atmospheric Sciences, University of Northern Colorado, Campus Box 100, Greeley, CO 80639, (2)Department of Geosciences, University of Massachusetts Amherst, 627 N Pleasant St, Amherst, MA 01003
 
9:40 AM
Break
2-6
9:55 AM
CONSTRAINTS ON THE TIMING OF METAMORPHISM, DEFORMATION, AND ANATEXIS OF BIG THOMPSON AND POUDRE CANYON MIGMATITES USING EPMA MONAZITE PETROCHRONOLOGY
ETTSEN, Matthew1, GROVER, Timothy2, BAIRD, Graham B.2 and WILLIAMS, Michael L.3, (1)Earth & Atmospheric Sciences, University of Northern Colorado, Greeley, CO 80639, (2)Earth & Atmospheric Sciences, University of Northern Colorado, Campus Box 100, Greeley, CO 80639, (3)Department of Geosciences, University of Massachusetts Amherst, 627 N Pleasant St, Amherst, MA 01003
2-7
10:15 AM
UNRAVELING THE PALEOPROTEROZOIC PETRO-TECTONIC EVOLUTION OF THE FARMINGTON CANYON COMPLEX, NORTHERN UTAH, IMPLICATIONS FOR THE BREAKUP OF SUPERIA AND CONSTRUCTION OF WESTERN LAURENTIA
BALGORD, Liz, YONKEE, Adolph and WILCOCK, Laura, Department of Earth and Environmental Sciences, Weber State University, 1415 Edvalson St - DEPT 2507, Ogden, UT 84408-2507
2-8
10:35 AM
EVALUATING THE RELATIVE IMPORTANCE OF BOUNDARY DISPLACEMENTS AND CONTINENT SHAPE IN GOVERNING INTERIOR STRESS AND STRAIN DURING THE ANCESTRAL ROCKY MOUNTAIN OROGENY WITH A 3-DIMENSIONAL FINITE ELEMENT METHOD
NOWACZEWSKI, Vincent S.1, STURMER, Daniel1 and VAUGHAN, Benjamin L.2, (1)Geological Sciences, University of Cincinnati, 500 Geo/Phys, PO Box 210013, Cincinnati, OH 45221-0013, (2)Mathematical Sciences, University of Cincinnati, 4125 French Hall, PO Box 210013, Cincinnati, OH 45221-0013
2-9
10:55 AM
THE ROLE OF PRE-EXISTING WEAKNESSES IN THE LARAMIDE OROGENY
HOBBS, Noah and VAN WIJK, Jolante, Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, 801 Leroy Pl., Socorro, NM 87801
2-10
11:15 AM
A REINTERPRETATION OF THE STRUCTURAL DEVELOPMENT OF THE OUTCROPPING GEOLOGICAL SECTION EAST OF BOULDER, COLORADO
KITTLESON, Ken, Aurora, CO 80014
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