Cordilleran Section - 116th Annual Meeting - 2020

Session No. 27
Wednesday, 13 May 2020: 1:30 PM-5:30 PM
San Rafael (The Westin Pasadena)

T9. The Enigmatic Late Cretaceous-Paleogene Tectonic Evolution of the Southwestern USA

 

Richard V. Heermance, Scott M. Johnston and John S. Singleton, Advocates
Paper #
Start Time
1:30 PM
DISTRIBUTION AND AGE OF DUCTILE STRAIN BETWEEN TWO DETACHMENT FAULTS IN THE FOOTWALL OF THE PIONEER METAMORPHIC CORE COMPLEX
PEDRICK, Fiona1, VOGL, James J.2, RUSMORE, Margaret E.1 and BOREL, Megan2, (1)Department of Geology, Occidental College, Los Angeles, CA 90041, (2)Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611
1:50 PM
NEW AGE CONSTRAINTS ON LATE CRETACEOUS THRUSTING AND ASSOCIATED GOLD MINERALIZATION IN SE CALIFORNIA
CAWOOD, Tarryn K., Department of Earth Sciences, University of Southern California, Zumberge Hall of Science (ZHS), 3651 Trousdale Pkwy, Los Angeles, CA 90089 and MOSER, Amy C., Department of Earth Science, University of California, Santa Barbara, 1006 Webb Hall, University of California, Santa Barbara, CA 93106-9630
2:10 PM
TECTONIC EVOLUTION OF THE NORTHERN PANAMINT RANGE, SOUTHEASTERN CALIFORNIA: EVIDENCE FOR SYNCONVERGENT LATE CRETACEOUS EXTENSIONAL COLLAPSE OF THE SEVIER-LARAMIDE OROGEN
BARBA, William K.1, WELLS, Michael L.1, HEIZLER, Matthew T.2 and TURNER, Elijah1, (1)Department of Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Pkwy, Las Vegas, NV 89154-4010, (2)New Mexico Bureau of Geology, New Mexico Institute of Mining and Technology, 801 Leroy Pl., Socorro, NM 87801
2:30 PM
THE NORTH AMERICAN CORDILLERAN ANATECTIC BELT AND LARAMIDE-AGE CRUSTAL MELTING IN THE SOUTHWEST US
CHAPMAN, James B., Geology and Geophysics, University of Wyoming, Geology and Geophysics Dept., 1000 E. University Ave, Laramie, WY 82071, RUNYON, Simone E., Department of Geology and Geophysics, University of Wyoming, 1000 E University Ave, Geology Dept 3006, Laramie, WY 82071 and BARTH, Andrew P., Department of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202
 
2:50 PM
Break
3:05 PM
CHARACTER OF LATE CRETACEOUS MAGMATISM SPANNING THE TRANSITION FROM SUBDUCTION TO LARAMIDE OROGENESIS IN THE WESTERN/CENTRAL MOJAVE REGION
ECONOMOS, Rita C.1, FRIESENHAHN, Brody P.1, BARTH, Andrew P.2, WOODEN, Joseph L.3, POWELL, Robert E.4, PATERSON, Scott R.5, ANDERSON, J. Lawford6 and IANNO, Adam J.7, (1)Southern Methodist University, Earth Sciences, 3225 Daniel Ave, Heroy 207, Dallas, TX 75275, (2)Earth Sciences, Indiana University-Purdue University, 723 West Michigan Street, Indianapolis, IN 46202, (3)U.S. Geological Survey, Retired, Menlo Park, CA 94025, (4)U.S. Geological Survey, Tucson, AZ 85719, (5)Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740, (6)Earth and Environment, Boston University, 685 Commonwealth Ave., Boston, MA 02215, (7)Department of Geology, Juniata College, 1700 Moore Street, Huntingdon, PA 16652
3:25 PM
RAPID SUBSIDENCE AND COLLAPSE OF THE EOCENE CORDILLERAN MARGIN AND DEPOSITION OF THE MANIOBRA FORMATION, CA
SLOAN, Hanah1, HEERMANCE, Richard V.2, CECIL, M. Robinson3, SOUSA, Francis J.4, BARAJAS, Andrew2 and PINA, Isabel2, (1)California State University Northridge, Northridge, CA 91330, (2)Department of Geological Sciences, California State University Northridge, Northridge, CA 91130-8266, (3)Geological Sciences, CSU-Northridge, 18111 Nordhoff Street, CSUN Dept of Geological Sciences, Northridge, CA 91330, (4)College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331
3:45 PM
PROVENANCE, PALEOGEOGRAPHY, AND CROSS-FAULT CORRELATIONS OF LATE CRETACEOUS-PALEOGENE POLYCYCLIC FLUVIAL AND SHALLOW MARINE CONGLOMERATES, WESTERN MOJAVE, COAST RANGES, AND TEHACHAPI MTNS, CA
MILLER, D.E., MT² Services, PO Box 937, Bishop, CA 93515, TORRES ANDRADE, Eneas, California State University, Bakersfield, 9001 Stockdale Highway, Bakersfield, CA 93311 and MONTEJO, Carlos, Dept. of Geological Engineering, Montana Tech, 1300 West Park Street, Butte, MT 59701
4:05 PM
DYNAMICS OF THE POST-SUBDUCTION THERMAL ANOMALY OF THE NACIMIENTO BLOCK REVEALED BY RSCM AND (U-TH/HE) THERMOCHRONOLOGY
LACROIX, Brice J.1, WARD, Christine1, LAHFID, Abdeltif2, NIEMI, Nathan A.3, SPENCER, Joel1 and KEMPTON, Pamela D.1, (1)Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS 66506, (2)BRGM, Orléans, 45000, France, (3)Department of Earth and Environmental Sciences, University of Michigan, 1100 N University Ave, Ann Arbor, MI 48109
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