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Cordilleran Section - 121st Annual Meeting - 2025

Session No. 3
Wednesday, 2 April 2025: 8:00 AM-12:00 PM
Balboa/Calaveras (Holiday Inn Sacramento Downtown - Arena)

T15. Tectonics and Magmatism in the Modern and Ancestral Cascades Volcanic Arc I

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

 

Bryant Platt, Alicia Manzo, Chad Carlson and Jessica Shields, Advocates
Paper #
Start Time
3-1
8:00 AM
TECTONIC EVOLUTION OF THE ANCESTRAL CASCADES ARC SENSU LATO: EOCENE TO PLIOCENE, US TO MEXICO
BUSBY, Cathy, Earth and Planetary Sciences, University of California Davis, Davis, CA 95616 and PUTIRKA, Keith, Department of Earth and Environmental Sciences, California State University - Fresno, Fresno, CA 93740
Handouts
  • Busby and Putirka GSA 2025 Tectonics Ancestral Cascades.pdf (6.4 MB)
    • 3-2
    8:30 AM
    BASEMENT INFLUENCES ON CENOZOIC ANCESTRAL CASCADES ARC VOLCANIC ROCK ISOTOPIC COMPOSITIONS IN NORTHEASTERN NEVADA, USA
    COUSENS, Brian1, BODDY, Martina2, KABORE, Annabel2 and HENRY, Christopher D.3, (1)Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, CANADA, (2)Earth Sciences, Carleton University, 1125 Colonel By Dr, Ottawa, ON K1S 5B6, CANADA, (3)Nevada Bureau of Mines and Geology, University of Nevada, Reno, NV 89557
    Handouts
  • Cousens_GSA_Presentation_Upload.pdf (17.5 MB)
    • 3-3
    8:50 AM
    EVALUATING THE CAUSE OF CRETACEOUS INTRAPLATE MAGMATISM IN THE SOUTHERN OMINECA BELT
    REBELO, Felipe, Department of Geological Sciences, California State University, Northridge, 18111 Nordhoff St, Northridge, CA 91330 and CECIL, Robinson, Department of Geological Sciences, California State University Northridge, Northridge, CA 91330-8266
    3-4
    9:10 AM
    ANCESTRAL CASCADES VOLCANIC CENTERS OF THE FEATHER AND YUBA RIVER DRAINAGES, NORTHEASTERN CALIFORNIA
    ROBERTS, Michelle, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, Moffett Field, CA 94035 and CALVERT, Andrew, Alaska Volcano Observatory, U.S. Geological Survey, 4230 University Dr., Suite 100, Anchorage, AK 99508
     
    9:30 AM
    Break
    3-5
    9:45 AM
    Withdrawn
    3-5
    9:45 AM
    TECTONICS OF THE BACKARC OF THE CASCADIA SUBDUCTION SYSTEM AND THE ROLE OF TECTONIC INHERITANCE
    TIKOFF, Basil and RUGGLES, Claire, Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53703
    3-6
    10:05 AM
    MAPPING BASALTS ON THE MODOC PLATEAU IN NORTHEASTERN CALIFORNIA BY CORRELATING PALEOMAGNETIC DIRECTIONS
    AVERY, Margaret, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, 345 Middlefield Road, MS 975, Menlo Park, CA 94025, DONNELLY-NOLAN, Julie, U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, CA 94025 and LANGENHEIM, Victoria, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, P.O. Box 158, Moffett Field, CA 94035
    3-7
    10:25 AM
    ACTIVE FAULTING OF LASSEN NP AND SURROUNDING AREAS
    USHER, Evelyn, Department of Earth Sciences, University of Oregon, 704 Hillside Ave, Eugene, OR 97601 and OSKIN, Michael E., Department of Earth and Planetary Sciences, University of California, Davis, Davis, CA 95616
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