Cordilleran Section - 115th Annual Meeting - 2019

Session No. 18
Thursday, 16 May 2019: 8:00 AM-12:00 PM
Room C125-126 (Oregon Convention Center)

T9. Tectonic Processes in Cordilleran Arcs

 

Stacia M. Gordon and Robert B. Miller, Advocates
Paper #
Start Time
8:00 AM
ARC MAGMATISM, CRUSTAL THICKENING, AND THE EXTINCTION OF CORDILLERAN FLARE-UPS
MILLER, Jonathan, Department of Geology, San Jose State University, San Jose, CA 95192-0102, LACKEY, Jade Star, Geology Department, Pomona College, Claremont, CA 91711 and SHEA, Erin K., Bishop, CA 93514
8:20 AM
ARE DEFORMATION AND MAGMATISM LINKED IN ARC OROGENS? MULTI-SCALE TECTONOMAGMATIC RELATIONSHIPS AND OROGENIC EVOLUTION DURING ARC FLARE-UPS
ATTIA, Snir1, PATERSON, Scott R.1 and MILLER, Robert B.2, (1)Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740, (2)Department of Geology, San Jose State University, One Washington Square, San Jose, CA 95192
8:40 AM
ZIRCON HF AND O ISOTOPE ANALYSIS OF JURASSIC-EOCENE PLUTONS OF THE SOUTHERN COAST MOUNTAINS BATHOLITH, BRITISH COLUMBIA, INDICATES MAGMATIC EVENTS DOMINATED BY MANTLE SOURCES
CECIL, M. Robinson1, GEHRELS, George E.2, YOKELSON, Intan N.3, HOMAN, Emily4, RUSMORE, Margaret E.3, STOWELL, Harold H.5, WOODSWORTH, Glenn J.6, VALLEY, John W.7 and KITAJIMA, Kouki8, (1)Geological Sciences, CSU-Northridge, 18111 Nordhoff Street, CSUN Dept of Geological Sciences, Northridge, CA 91330, (2)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721, (3)Department of Geology, Occidental College, Los Angeles, CA 90041, (4)California State University, Northridge, 15700 Hiawatha St, Granada Hills, CA 91344, (5)Department of Geological Sciences, The University of Alabama, 201 7th Ave., Bevill Building, Room 202, Tuscaloosa, AL 35487, (6)Geological Survey of Canada, 101-605 Robson St, Vancouver, BC V6B 5J3, Canada, (7)WiscSIMS Laboratory, Department of Geoscience, University of Wisconsin–Madison, Madison, WI 53706, (8)Department of Geoscience, University of Wisconsin–Madison, 1215 W Dayton Street, Madison, WI 53706
9:00 AM
SEDIMENT INCORPORATION INTO CONTINENTAL MAGMATIC ARCS: A CASE STUDY OF THE NORTH CASCADES RANGE, WASHINGTON
GORDON, Stacia M., Department of Geological Sciences, University of Nevada, Reno, 1664 N. Virginia St, MS0172, Reno, NV 89557, SAUER, Kirsten B., Department of Geological Sciences, University of Nevada-Reno, 1664 N. Virginia Street, Reno, NV 89557 and MILLER, Robert B., Department of Geology, San Jose State University, One Washington Square, San Jose, CA 95192
9:20 AM
IGNEOUS AND METAMORPHIC CHRONOLOGY OF SALINIAN ARC LOWER ARC CRUST, CENTRAL CALIFORNIA COAST
JOHNSTON, Scott M.1, CHAPMAN, Alan D.2, DEKTAR, Emily C.1 and KYLANDER-CLARK, Andrew R.C.3, (1)Physics Department, California Polytechnic State University, San Luis Obispo, CA 93407, (2)Geology Department, Macalester College, 1600 Grand Ave., St. Paul, MN 55105, (3)Earth Science, University of California Santa Barbara, 1006 Webb Hall, University of California, Santa Barbara, CA 93106
9:40 AM
MESOZOIC MAGMATISM AND ARC CESSATION IN THE CENTRAL MOJAVE DESERT, CALIFORNIA
VERMILLION, Karissa B.1, VAN BUER, Nicholas J.1 and HOLK, Gregory J.2, (1)Department of Geological Sciences, California State Polytechnic University, Pomona, 3801 W Temple Ave, Pomona, CA 91768, (2)Department of Geological Sciences and IIRMES, California State Univ Long Beach, 1250 Bellflower Blvd, Long Beach, CA 90840
 
10:00 AM
Break
10:15 AM
ANTITHETICAL MIGRATING PLUTONS IN EVOLVING ARCS
PATERSON, Scott1, SCHELAND, Cullen L.2, MEMETI, Vali2, FLORES, Celeste2, WHITE, Megan Luisa1 and VERNON, Ron3, (1)Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740, (2)Department of Geological Sciences, California State University, Fullerton, 800 N State College Blvd., Fullerton, CA 92831-3599, (3)Department of Earth and Planetary Sciences, Macquarie University, Sydney, NSW 2109, Australia
10:35 AM
FLARE-UP AND CESSATION OF THE FAMATINA ARC LINKED TO CHANGES IN OBLIQUE CONVERGENCE AND TRANSLATION ON THE GONDWANA MARGIN
MULCAHY, Sean R., Geology Department, Western Washington University, Bellingham, WA 98225, MCCLELLAND, William C., Department of Geoscience, University of Iowa, Iowa City, IA 52242 and ROESKE, Sarah, Earth and Planetary Sciences, University of California, Davis, Davis, CA 95616
11:15 AM
TOPOGRAPHIC EVOLUTION OF THE SOUTHERN CENTRAL ANDES FROM STABLE ISOTOPE PALEOALTIMETRY OF HYDRATED VOLCANIC GLASS
FENNELL, Lucas Martin1, HREN, Michael T.2, BRANDON, Mark T.3, COLWYN, David4, MARTOS, Federico Exequiel1, LEWIS, Amelia5 and FOLGUERA, Andres1, (1)Instituto de Estudios Andinos, Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina, (2)Department of Geosciences, University of Connecticut, Storrs, CT 06269, (3)Geology & Geophysics, Yale University, New Haven, CT 06520, (4)Geological Sciences, University of Colorado at Boulder, UCB 399, Benson Earth Sciences, Boulder, CO 80309, (5)Geology, Oberlin College, Geology Department, Rm. 403, 52 W. Lorain St, Oberlin, OH 44074
11:35 AM
PLIOCENE UPLIFT OF THE CENTRAL ALEUTIAN ARC: EVIDENCE FROM THE ~35-31 MA HIDDEN BAY AND ~ 14 MA KAGALASKA PLUTONS ON ADAK ISLAND
KAY, Suzanne Mahlburg, EAS, Cornell University, Ithaca, NY 14853-1504, SPIKINGS, Richard, Section of Earth and Environmental Sciences, University of Geneva, 13 Rue des Maraichers, Geneva, 1205, Switzerland and JICHA, Brian R., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706
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