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Cordilleran Section - 121st Annual Meeting - 2025

Session No. 15
Thursday, 3 April 2025: 8:00 AM-12:00 PM
Balboa/Calaveras (Holiday Inn Sacramento Downtown - Arena)

T10. Cordilleran and Other Orogenic Belt Evolution from Components to Whole

 

John Wakabayashi, David H. Shimabukuro and Jessie Shields, Advocates
Paper #
Start Time
15-1
8:00 AM
THE ORIGIN AND HISTORY OF CENOZOIC MEGALAKE SUDD, ALONG THE RIVER NILE IN SUDAN AND SOUTH SUDAN
ALVAREZ, Walter, Department of Earth and Planetary Science, University of California, 307 McCone Hall, Berkeley, CA 94720-4767 and CHAN, Lung Sang, Department of Earth and Planetary Science, University of California, 307 McCone Hall, Berkeley, CA 94720-4767; Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, Hong Kong
15-2
8:20 AM
LATE ORDOVICIAN HIGH-PRESSURE REGIONAL METAMORPHISM IN SCOTLAND: CALEDONIAN OROGENESIS PREDATED THE CLOSURE OF IAPETUS
LAMONT, Thomas, Department of Geoscience, University of Nevada Las Vegas, Lilly Fong Geoscience Building, 4505 Maryland Parkway, Las Vegas, Nevada, NV 89154-4010, MCCARTHY, William, Department of Earth & Environmental Sciences, University of St Andrews, Irvine Building, University of St Andrews, North Street, St Andrews, KY16 9AL, Scotland, STRACHAN, Robin, 12 Selsmore Avenue, Hayling Island, NH PO11 9PB, UNITED KINGDOM, ROBERTS, Nick M.W., Geochronology and Tracers Facility, British Geological Survey, Keyworth, NG12 5GG, United Kingdom, MACKAY-CHAMPION, Tobermory, Department of Earth Sciences, University of Oxford, Department of Earth Sciences, South Parks Road, Oxford, OX19AN, United Kingdom and SEARLE, Michael P., Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, United Kingdom
15-3
8:40 AM
GEOLOGIC RECORD OF SUBDUCTION INITIATION PROCESSES FOR THE LATE TRIASSIC-JURASSIC TALKEETNA ARC, ALASKA: PRE-INITIATION DEFORMATION, SYN-INITIATION VOLCANISM, AND ESTABLISHMENT OF THE ARC FRONT
KEOUGH, Brandon, CRAIN, Wyatt, EDDY, Michael and RIDGWAY, Kenneth, Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907
15-4
9:00 AM
HOT OROGENIC HINTERLAND CRUST DECOUPLED FROM BASAL TRACTIONS: A COMPARISON OF FLAT SLAB AND UNDERTHRUSTING EXAMPLES IN THE NORTH AMERICAN LARAMIDE, SOUTHEAST CHINA, AND SOUTHERN TIBET
ZUZA, Andrew V., Nevada Bureau of Mines and Geology, University of Nevada, Reno, Reno, NV 89557; Nevada Geosciences, University of Nevada, Reno, Reno, NV 89557, VLAHA, Dominik R., Nevada Geosciences, University of Nevada, Reno, Reno, NV 89557; Department of Geological Sciences and Engineering, University of Nevada, Reno, Reno, NV 89557 and LEE, Terry, Nevada Geosciences, University of Nevada, Reno, 1664 N. Virginia St, Reno, NV 89557
 
9:20 AM
Break
15-5
9:35 AM
RECONSTRUCTING CALIFORNIA AT 90 Ma USING FINITE-ELEMENT PALEOGEOLOGIC MAPS
INGERSOLL, Raymond, Earth, Planetary and Space Sciences, Univ California, Los Angeles, PO Box 951567, Los Angeles, CA 90095-1567
15-6
9:55 AM
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)
    • 15-7
    10:15 AM
    ONSET OF SUBDUCTION ACCRETION IN THE FRANCISCAN COMPLEX VARIES ALONG STRIKE: NEW U-Pb DETRITAL ZIRCON INSIGHTS FROM THE SKAGGS SPRINGS AND GOAT MOUNTAIN SCHISTS
    ESQUENET, Sophia1, TREVATHAN, Elizabeth Marie1, CHAPMAN, Alan1 and WAKABAYASHI, John2, (1)Geology Department, Macalester College, St. Paul, MN 55105, (2)Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740
    15-8
    10:35 AM
    POLYCYCLIC METAMORPHISM AND EXHUMATION OF SUBDUCTION COMPLEX ROCKS, CEDROS ISLAND, BAJA CALIFORNIA
    WANG, Jordan, Department of Geosciences, University of Arizona, 1040 E 4th St, Tucson, AZ 85721, HERNÁNDEZ URIBE, David, Earth and Environmental Sciences, University of Illinois Chicago, Chicago, IL 60607, HOLDER, Robert, Earth and Environmental Sciences, University of Michigan Ann Arbor, 1100 North University Avenue, Ann Arbor, MI 48109-1005, KAPP, Paul, Department of Geosciences, University of Arizona, Tucson, AZ 85721, HE, John, Earth, Planetary, and Space Sciences, University of California Los Angeles, 595 Charles E Young Dr E, Los Angeles, CA 90095 and WORTHINGTON, James, Geosciences Research Division, UC San Diego - Scripps Institution of Oceanography, 9500 Gilman Drive, Mail Code 0244, La Jolla, CA 92093-0244
    15-9
    10:55 AM
    SUBDUCTION EROSION UNLIKELY TO TECTONICALLY INCORPORATE UPPER PLATE BLOCKS IN SUBDUCTION COMPLEX MÉLANGES
    WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740
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