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Cordilleran Section - 121st Annual Meeting - 2025

3-1
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
    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)
    • 4-3
    PROCESSES CONTROLLING MAGMA FERTILITY AT BUENAVISTA DEL COBRE PORPHYRY COPPER DEPOSIT (CANANEA, MEXICO): A NEW PETROGENETIC MODEL BASED ON ZIRCON U-Pb DATING AND APATITE GEOCHEMISTRY
    ALMADA, Víctor1, NOURY, Mélanie1, CALMUS, Thierry1, COGNÉ, Nathan2, BARRERA, Edgardo3 and POUJOL, Marc2, (1)Estacion Regional del Noroeste, Instituto de Geologia, Universidad Nacional Autónoma de Mexico, Luis Donaldo Colosio, s/n, Los Arcos, Hermosillo, 83250, Mexico, (2)Géosciences Rennes UMR 6118, Université Rennes 1, Rennes, 35000, France, (3)Superintendencia de Geología, Grupo México, Buenavista del Cobre, Cananea, SO 84624, Mexico


    Handouts
  • 2024_Almada-Gutiérrez et al.pdf (31.2 MB)
    • 10-1
    THE TECTONIC ORIGIN OF LAKE MERRITT
    ALDEN, Andrew, Northern California Geological Society, 1951 Telegraph Ave Apt 306, Oakland, CA 94612


    Handouts
  • Tectonic Origin of Lake Merritt poster.pdf (8.0 MB)
    • 11-5
    TECTONIC EVOLUTION OF THE MORONGO VALLEY BLOCK IN SOUTHERN CALIFORNIA—IMPLICATIONS FOR LATE QUATERNARY INTERACTION OF THE WESTERN PINTO MOUNTAIN FAULT ZONE WITH THE SAN ANDREAS FAULT ZONE
    HOPSON, Forrest, Consulting Geologist, 1200 Riverside Drive, Unit 1269, Reno, NV 89503, YULE, J. Douglas, Geological Sciences, Cal State University Northridge, Northridge, CA 91330, MCNEIL, James, Piteau Associates, 9090 Double Diamond Parkway, Suite 1, Reno, NV 89521 and LEWIS, Katherine, Nordby Wine Caves, 600 Bicentennial Way, Suite 210, Santa Rosa, CA 95403


    Handouts
  • Hopson-etal-2025_Lecture-Notes_MorongoValleyBlock_03302025_final.pdf (150.4 kB)
  • Hopson-etal-2025_MorongoValleyBlock_GSA-Cordilleran_slide-set_04062025_final.pdf (2.4 MB)
    • 13-2
    GEOLOGIC SETTING OF LAKE MERRITT, THE EAST BAY'S STRANGE ATTRACTION
    ALDEN, Andrew, Northern California Geological Society, 1951 Telegraph Ave Apt 306, Oakland, CA 94612


    Handouts
  • Cordilleran GSA Talk.docx (21.6 kB)
  • Geologic Setting of Lake Merritt.pdf (14.1 MB)
    • 15-6
    GEOCHEMISTRY AND AGE OF THE DARRINGTON PHYLLITE WITHIN THE HICKS BUTTE AND KACHESS LAKE INLIERS, CENTRAL CASCADES, WASHINGTON. TECTONIC SETTING AND REGIONAL CORRELATIONS SUGGESTING A POLYGENETIC ORIGIN
    MACDONALD Jr., James1, DAVIS, Peter2, DRAGOVICH, Joe3 and HERNANDEZ, Iris2, (1)Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, FL 33965, (2)Earth Science, Pacific Lutheran University, 1010 S 122nd St, Tacoma, WA 98447, (3)Dragovich Geo-Consulting, 3050 Carpenter Hills LP SE, Lacey, WA 98503


    Handouts
  • MacDonald et al Darrington.pdf (4.4 MB)
    • 16-2
    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)
    • 22-13
    GEOCHEMISTRY OF CHERT, SILICIFIED LIMESTONE, AND LIMESTONE OF THE OCALA LIMESTONE
    ANDERST, James and MACDONALD Jr., James, Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd South, Fort Myers, FL 33965


    Handouts
  • Anderst Chert Poster final.pdf (1.9 MB)
    • 22-13
    GEOCHEMISTRY OF CHERT, SILICIFIED LIMESTONE, AND LIMESTONE OF THE OCALA LIMESTONE
    ANDERST, James and MACDONALD Jr., James, Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd South, Fort Myers, FL 33965


    Handouts
  • Anderst Chert Poster final.pdf (1.9 MB)
    • 22-14
    GEOCHEMICAL ANALYSIS OF THE TEANAWAY FORMATION, CENTRAL CASCADES, WASHINGTON. EVIDENCE TO SUPPORT SLAB BREAKOFF AFTER ACCRETION OF SILETZIA
    BUSS, George1, MACDONALD Jr., James1 and TEPPER, Jeffrey H.2, (1)Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, FL 33965, (2)Geology Department, University of Puget Sound, 1500 N Warner St, Tacoma, WA 98416-1048


    Handouts
  • Buss et al GSA Sacramento Poster Final.pdf (1.4 MB)
    • 22-14
    GEOCHEMICAL ANALYSIS OF THE TEANAWAY FORMATION, CENTRAL CASCADES, WASHINGTON. EVIDENCE TO SUPPORT SLAB BREAKOFF AFTER ACCRETION OF SILETZIA
    BUSS, George1, MACDONALD Jr., James1 and TEPPER, Jeffrey H.2, (1)Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, FL 33965, (2)Geology Department, University of Puget Sound, 1500 N Warner St, Tacoma, WA 98416-1048


    Handouts
  • Buss et al GSA Sacramento Poster Final.pdf (1.4 MB)
    • 23-8
    OROCLINAL BENDING AND STRAND ABANDONMENT ALONG THE PINTO MOUNTAIN FAULT ZONE—IMPLICATIONS FOR FAULT INTERACTION WITHIN THE EASTERN CALIFORNIA SHEAR ZONE, SOUTHERN CALIFORNIA
    HOPSON, Forrest, Consulting Geologist, 1200 Riverside Drive, Unit 1269, Reno, NV 89503


    Handouts
  • Hopson2025_GSA-Cordilleran-poster_Pinto-Mtn-Fault-Zone_final_03302025.pdf (826.7 kB)
    • 28-3
    GEOCHEMISTRY AND TECTONIC EVOLUTION OF THE POLYGENETIC INGALLS OPHIOLITE COMPLEX, CENTRAL CASCADES, WASHINGTON.
    MACDONALD Jr., James, Environmental Geology Program, Florida Gulf Coast University, 10501 FGCU Blvd. South, Fort Myers, FL 33965 and MILLER, Robert B., Geology Department, San Jose State University, San Jose, CA 95192


    Handouts
  • MacDonald and Miller.pdf (4.8 MB)
    • 37-6
    INTERPRETING WINDS, WAVES, AND VOLCANOES FROM OKINAWAN MUSIC FOR PLACE-BASED SCIENCE EDUCATION
    HIGA, Justin1, UYEUNTEN, June Y.2 and ODO, Kenton A.2, (1)Department of Earth Sciences, University of Hawaii at Manoa, Honolulu, HI 96822; Ryukyu Koten Afuso Ryu Ongaku Kenkyu Choichi Kai USA, Hawaiʻi Chapter, Honolulu, HI 96821, (2)Ryukyu Koten Afuso Ryu Ongaku Kenkyu Choichi Kai USA, Hawaiʻi Chapter, Honolulu, HI 96821


    Handouts
  • GSACord2025_Upload_Compress.pdf (18.2 MB)