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Cordilleran Section - 117th Annual Meeting - 2021

Session No. 2
Wednesday, 12 May 2021: 8:30 AM-12:30 PM
Desert Research Institute Room (Online)

T2. Petrology, Geochemistry, and Structure of Cordilleran Batholiths Through Space and Time

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

 

Madeline Lewis, Claire E. Bucholz, Jade Star Lackey and Juliet Ryan-Davis, Advocates
Paper #
Start Time
 
8:30 AM
Introductory Remarks
2-1
8:35 AM
TECTONIC NATURE OF CONTINENTAL ARCS CONTROLS THEIR CHEMICAL WEATHERING SIGNATURES
CAO, Wenrong, University of Nevada Reno Department of Geological Sciences, 1664 N. Virginia Street, MS 0172, Reno, NV 89557-0001
2-2
8:55 AM
USING DETRITAL ZIRCON GEOCHEMISTRY TO STUDY DEEP ARC PROCESSES
CLEMENS-KNOTT, Diane, Department of Geological Sciences, California State University, Fullerton, CA 92834, SURPLESS, Kathleen DeGraaff, Geosciences, Trinity University, One Trinity Place, San Antonio, TX 78212, BARTH, Andrew P., Earth Sciences, Indiana University-Purdue University, 723 West Michigan Street, Indianapolis, IN 46202, WOODEN, Joseph L., U.S. Geological Survey, Retired, 785 Nob RIdge Dr., Marietta, GA 30064 and GEVEDON, Michelle, Department of Earth Sciences, Southern Methodist University, Dallas, TX 75275
Recorded Presentation
2-3
9:15 AM
DETRITAL ZIRCON AS A TRACER FOR TIME-TRANSGRESSIVE, REGIONAL-SCALE ARC PROCESSES: A CASE STUDY FROM MODERN SIERRA NEVADA SANDS
JOHNSTON, Scott, Physics Department, California Polytechnic State University, San Luis Obispo, CA 93407, KYLANDER-CLARK, Andrew R.C., Department of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106 and BARTH, Andrew P., Earth Sciences, Indiana University-Purdue University, 723 West Michigan Street, Indianapolis, IN 46202
 
9:35 AM
Break
2-4
9:50 AM
THE TIMING AND MAGMA SOURCE OF THE SONORA DIKE SWARM AND STANDARD PLUTON, SONORA, CALIFORNIA, AND COMPARISON TO OTHER JURASSIC DIKE SWARMS IN THE SIERRA NEVADA BATHOLITH
BATES, Caitlin1, MEMETI, Vali1, PATERSON, Scott2 and WESLEY, Abigail J.3, (1)Department of Geological Sciences, California State University Fullerton, 800 N State College Blvd, Fullerton, CA 92831, (2)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, (3)Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740
2-5
10:10 AM
ZIRCON U-PB GEOCHRONOLOGY, TRACER ISOTOPE (LU-HF, δ18O), AND TRACE ELEMENT GEOCHEMISTRY OF THE HOGEM BATHOLITH, QUESNEL TERRANE, NORTH-CENTRAL BRITISH COLUMBIA
JONES, Gabrielle1, OOTES, Luke2, PEARSON, D. Graham1, VEZINET, Adrien1, LUO, Yan1, STERN, Richard3 and MILIDRAGOVIC, Dejan4, (1)Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada, (2)British Columbia Geological Survey, Ministry of Energy, Mines and Low Carbon Innovation, Victoria, BC V8W 9N3, Canada, (3)Canadian Centre for Isotopic Microanalysis, Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada, (4)Natural Resources Canada, Geological Survey of Canada - Pacific, 1500-605 Robston St,, Vancouver, BC V6B 5J3, Canada
2-6
10:30 AM
PETROLOGY OF THE PLUTONIC ROCKS OF THE CALMALLI-SAN FRANCISQUITO REGION, SOUTHERN PENINSULAR RANGES BATHOLITH, BAJA CALIFORNIA, MEXICO
CONTRERAS-LÓPEZ, Manuel1, DELGADO-ARGOTE, Luis Alberto1, WEBER, Bodo1, TORRES-CARRILLO, Xochitl G.2, FREI, Dirk3 and GÓMEZ-ALVAREZ, Doris K.1, (1)Geology Department, Center for Scientific Research and Higher Education of Ensenada, Carretera Ensenada-Tijuana 3918, Ensenada, BJ 22860, Mexico, (2)Faculty of Earth and Space Sciences, Autonomous University of Sinaloa, Avenida Universitarios, Ciudad Universitaria, Culiacán Rosales, SI 80013, Mexico, (3)Department of Earth Science, University of Western Cape, Belville, South Africa
Handouts
  • Contreras-López et al 2021 Cordilleran GSA.pdf (32.0 MB)
    •  
    10:50 AM
    Break
     
    11:05 AM
    Discussion
    2-7
    11:20 AM
    PETROLOGY OF EOCENE-MIOCENE VOLCANIC UNITS IN CENTRAL WASHINGTON AND THEIR TECTONIC SETTINGS
    GALLAGHER, Maeve, ANTENUCCI, Kiira, GLAZE, Colin and TEPPER, Jeffrey H., Geology Department, University of Puget Sound, 1500 N Warner St, Tacoma, WA 98416
    2-8
    11:25 AM
    PETROLOGY AND TECTONIC SETTING OF SILVER PASS VOLCANICS, CENTRAL CASCADES, WA: MIDDLE EOCENE SLAB BREAKOFF
    PETERSON, Pauline, DAVIES, Gordon and TEPPER, Jeffrey H., Geology Department, University of Puget Sound, 1500 N Warner St, Tacoma, WA 98416-1048
    2-9
    11:30 AM
    EARLY-PALEOGENE MAGMATISM IN THE PINALEÑO MOUNTAINS, ARIZONA: EVIDENCE FOR MELTING OF DIVERSE BASEMENT ASSEMBLAGES DURING THE LARAMIDE OROGENY
    SCOGGIN, Shane, Geology and Geophysics, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, CHAPMAN, James, Geology and Geophysics, University of Wyoming, Geology and Geophysics Dept., 1000 E. University Ave, Laramie, WY 82071, SHIELDS, Jessie E., Earth & Environmental Sciences Dept, California State University, Fresno, 2576 E. San Ramon Ave., Mail Stop ST-24, Fresno, CA 93740, TRZINSKI, Adam, Geology and Geophysics, University of Wyoming, 1000 E. University Ave, Laramie, WY 82071 and DUCEA, Mihai N., Faculty of Geology and Geophysics, University of Bucharest, Bucharest, 011004, Romania
    2-10
    11:35 AM
    GEOCHEMISTRY OF THE EOCENE PAN-TAK GRANITE OF THE COYOTE MOUNTAINS, SOUTHERN ARIZONA
    PRIDMORE, Cody, University of Wyoming, 1000 East University Avenue, Laramie, WY 82071, CHAPMAN, James, Geology and Geophysics, University of Wyoming, Geology and Geophysics Dept., 1000 E. University Ave, Laramie, WY 82071 and HAXEL, G.B., Northern Ariozona University, Flagstaff, AZ 86011
     
    11:40 AM
    Break
    2-11
    11:45 AM
    VARIATION IN AGE AND GEOCHEMISTRY OF THE PERUVIAN COASTAL BATHOLITH FROM SOUTH TO NORTH
    BENDITA, Raquel1, MARTINEZ ARDILA, Ana Maria1, CLAUSEN, Benjamin L.2, POMPE, Lance1 and HOLK, Gregory J.3, (1)Dept of Earth and Biological Sciences, Loma Linda Univ, Loma Linda, CA 92350, (2)Dept of Earth and Biological Sciences, Loma Linda Univ, Geoscience Research Inst, Loma Linda, CA 92350, (3)Department of Geological Sciences and IIRMES, California State Univ, Long Beach, CA 90840
    2-12
    11:50 AM
    DIABASE DIKE AND STOCK INTRUSIONS COUPLED WITH HYPABYSSAL MAGMATIC STOPING AND SLUMP BLOCKS WITHIN THE BONEY MOUNTAIN FAULT ZONE IN THE TOPANGA FORMATION, WESTERN SANTA MONICA MOUNTAINS, SOUTHERN CALIFORNIA
    SAENZ, Joseph, Camarillo, CA 93012, MODUGNO, Andrew, Los Angeles Unified School District, Los Angeles, CA 90017, DENISON, Frank E., Frank Denison Geology (Consultant), 867 Hartglen Avenue, Westlake Village, CA 91361, O'NEIL, Thomas J., Oxnard College, 4000 Rose Avenue, Oxnard, CA 93030; Oxnard College, 4000 Rose Avenue, Oxnard, CA 93030, MICHENER, Stuart, Consulting Geologist, Pasadena, CA 91107 and GARZA, Lazaro, Math and Science, Oxnard College, 4000 Rose Avenue, Oxnard, CA 93012; Frank Denison Geology (Consultant), 867 Hartglen Avenue, Westlake Village, CA 91361; Los Angeles Unified School District, Los Angeles, CA 90017; Oxnard College, 4000 Rose Avenue, Oxnard, CA 93030; Oxnard College, 4000 Rose Avenue, Oxnard, CA 93030
    2-13
    11:55 AM
    PROBING COMPOSITION VARIATIONS WITH DEPTH IN THE TILTED GANGDESE BATHOLITH, SOUTHERN TIBET
    FLOREZ, Anthony, 6460 Peavine Hills Ave, Reno, NV 89523-2867, CAO, Wenrong, University of Nevada Reno Department of Geological Sciences, 1664 N. Virginia Street, MS 0172, Reno, NV 89557-0001 and RUPRECHT, Philipp, Department of Geological Sciences and Engineering, University of Nevada, Reno, Reno, NV 89557
     
    12:00 PM
    Discussion
    Recorded Presentation
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