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Cordilleran Section - 121st Annual Meeting - 2025

Session No. 16
Thursday, 3 April 2025: 8:00 AM-12:00 PM
Fresno (Holiday Inn Sacramento Downtown - Arena)

T18. Tectonic Controls on Cenozoic Magmatism in the Cordillera

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

 

Cathy Busby, Keith Putirka, Michael Eddy, Sean Regan, Dawnika Blatter and Seth Burgess, Advocates
Paper #
Start Time
16-1
8:00 AM
NEOGENE VOLCANO-TECTONIC EVOLUTION OF THE CENTRAL BAJA CALIFORNIA PENINSULA, MÉXICO: TRANSITION FROM SUBDUCTION TO RIFTING AND MARINE INCURSION
BENNETT, Scott E.K., U.S. Geological Survey, Geology, Minerals, Energy and Geophysics Science Center, 1819 SW 5th Ave., #336, Portland, OR 97201; Department of Geology, Portland State University, 1721 SW Broadway Ave, Portland, OR 97201, DARIN, Michael H., Oregon Department of Geology and Mineral Industries, 165 E. 7th Avenue, Suite 200, Eugene, OR 97401, DORSEY, Rebecca J., Department of Earth Sciences, University of Oregon, Eugene, OR 97403-1205, HAUSBACK, Brian, Geology, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819-6043, GRANDY, Samuel, Geology, California State University, Sacramento, 6000 J Street, Sacramento, CA 958l9-6043, HEIZLER, Matthew T., New Mexico Bureau of Geology & Mineral Resources, New Mexico Geochronology Research Laboratory, 801 Leroy Place, Socorro, NM 87801, STELTEN, Mark E., U.S. Geological Survey, Volcano Science Center, 350 N. Akron Road, Moffett Field, CA 94035, PECHA, Mark E., Department of Geosciences, University of Arizona, Tucson, AZ 85721, SCHMITT, Axel, Institute of Earth Sciences, Heidelberg University, Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 236, Heidelberg, D-69120, Germany and DOLBY, Greer A., Biology Department, University of Alabama at Birmingham, 3100 Science and Engineering Complex, Birmingham, AL 35205
16-2
8:30 AM
THE COMONDÚ ARC-GULF OF CALIFORNIA RIFT TRANSITION: GEOLOGY AND GEOCHRONOLOGY
BUSBY, Cathy, Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, PUTIRKA, Keith, Department of Earth and Environmental Sciences, California State University - Fresno, Fresno, CA 93740, OROZCO-ESQUIVEL, Teresa, Centro de Geociencias, Universidad Nacional Autónoma de México, Campus Juriquilla, Blvd. Juriquilla 3001, Querétaro, EM 76230, Mexico and GRAETTINGER, Alison, Earth and Environmental Sciences, University of Missouri - Kansas City, Kansas City, MO 64110-2446
Handouts
  • Busby et al GSA Cordilleran Secton 2025.pdf (29.9 MB)
    • 16-3
    8:50 AM
    THE COMONDÚ ARC-GULF OF CALIFORNIA RIFT TRANSITION: GEOCHEMISTRY
    PUTIRKA, Keith, Department of Earth and Environmental Sciences, California State University - Fresno, Fresno, CA 93740 and BUSBY, Cathy, Earth and Planetary Sciences, University of California Davis, Davis, CA 95616
    16-4
    9:10 AM
    YOUNG LAVAS FROM MELTING OF A FOSSIL SLAB REMNANT, BAJA CALIFORNIA, MEXICO
    MULLER, James and CHIN, Emily, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093
    16-5
    9:30 AM
    Withdrawn
    16-5
    9:30 AM
    MAGMATISM AND DEFORMATION DURING THE TRANSITION FROM THE CRETACEOUS-PALEOCENE NORTH CASCADES ARC TO THE ANCESTRAL CASCADES ARC
    MILLER, Robert, Geology Department, San Jose State University, 1 Washington Square, San Jose, CA 95192, EDDY, Michael P., Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, TEPPER, Jeffrey H., Geology Department, University of Puget Sound, 1500 N Warner St, Tacoma, WA 98416-1048 and GORDON, Stacia, Department of Geological Sciences, University of Nevada, Reno, 1664 N. Virginia St, MS0172, Reno, NV 89557
     
    9:50 AM
    Break
    16-6
    10:05 AM
    PLATE CONFIGURATIONS FOR THE EARLIEST CASCADIA ARC: WAS THE KULA PLATE INVOLVED?
    EDDY, Michael P., Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907 and MILLER, Robert, Geology Department, San Jose State University, 1 Washington Square, San Jose, CA 95192
    16-6
    10:25 AM
    Withdrawn
    16-7
    10:25 AM
    NOT ALL LARGE, INTERMEDIATE COMPOSITION VOLCANIC SYSTEMS ARE TRANSCRUSTAL: EVIDENCE FROM THE SIERRA CREST – LITTLE WALKER & EBBETTS PASS VOLCANIC CENTERS, CENTRAL SIERRA NEVADA, CALIFORNIA
    MANZO, Alicia1, PUTIRKA, Keith1 and BUSBY, Cathy2, (1)Department of Earth and Environmental Sciences, California State University - Fresno, Fresno, CA 93740, (2)Earth and Planetary Sciences, University of California Davis, Davis, CA 95616
    16-8
    10:45 AM
    DELAMINATION MAGMATISM AND EXHUMATION: REFINED CHRONOSTRATIGRAPHY OF THE CHALLIS-KAMLOOPS GROUP AND THE EARLY EOCENE TECTONIC EVOLUTION OF THE PACIFIC NORTHWEST
    SCHMIDTKE, Eric, Earth and Atmospheric Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada, GIBSON, Daniel, Earth Sciences, Simon Fraser University, Vancouver, BC V5A 1S6, Canada, THORKELSON, Derek, Earth and Atmospheric Sciences, Simon Fraser University, 8888 University Dr, Burnaby, BC V5A 1S6, Canada and LUFFI, Peter, Sabba Stefanescu Institute of Geodynamics, Bucharest, n/a 020032, Romania
    16-9
    11:05 AM
    TECTONIC VS MAGMATIC CONTROLS DURING EOCENE ARC GRANITOID PLUTON CONSTRUCTION, ALASKA RANGE, AK
    REGAN, Sean, Geology and Geological Engineering, South Dakota School of Mines and Technology, 501 E. St. Joseph St., Rapid City, SD 57701, ROESKE, Sarah M., Earth and Planetary Sciences, University California- Davis, One Shields Avenue, Davis, CA 95616, SCHMITZ, Mark, Department of Geosciences, Boise State University, Boise, ID 83725, MILLER, McKenzie, Department of Geosciences, University of Alaska Fairbanks, Fairbanks, AK 99709, MARBLE, Sean, Dept of Geosciences, University of Alaska Fairbanks, 900 Yukon Dr, Fairbanks, AK 99775-9702 and HOFMANN, Florian, Geophysical Institute, University of Alaska Fairbanks, 1930 Yukon Dr, Fairbanks, AK 99775
    16-10
    11:25 AM
    CRETACEOUS TO PALEOGENE MAGMATISM IN THE YUKON TANANA UPLAND, ALASKA IN THE AFTERMATH OF YUKON TANANA TERRANE ACCRETION AND SUBSEQUENT EXTENSION
    NAIBERT, Travis, TWELKER, Evan, BUCHANAN, J. Wesley, NEWBERRY, Rainer J. and BARRERA, Michael L., Alaska Division of Geological and Geophysical Surveys, 3354 College Rd, Fairbanks, AK 99709
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