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Cordilleran Section - 121st Annual Meeting - 2025

Session No. 11
Wednesday, 2 April 2025: 1:30 PM-5:30 PM
Granada/Hermosa (Holiday Inn Sacramento Downtown - Arena)

T8. Cordilleran Tectonics: Integrating Field and Analytical Approaches

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

 

Terry Lee and Dominik Vlaha, Advocates
Paper #
Start Time
 
1:30 PM
Introductory Remarks
11-1
1:35 PM
STRUCTURAL AND FLUID SOURCE EVOLUTION DURING THE GROWTH OF A CORDILLERAN INTRA-ARC SEISMOGENIC FAULT SYSTEM (ATACAMA DESERT, CHILE)
MASOCH, Simone1, GOMILA, Rodrigo2, FONDRIEST, Michele2, PENNACCHIONI, Giorgio2, CEMBRANO, José3, DI TORO, Giulio2, JENSEN, Erik4, DALLAI, Luigi5 and NOVELLA, Davide2, (1)Nevada Seismological Laboratory, University of Nevada, Reno, Reno, NV 89557, (2)Dipartimento di Geoscienze, Università degli Studi di Padova, Padua, Italy, (3)Departamento de Ingeniería Estructural y Geotécnica, Pontificia Universidad Católica de Chile, Santiago, Chile, (4)EJS E.I.R.L., Structural Geology Consulting, Antofagasta, Chile, (5)Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Rome, Italy
11-1
1:55 PM
Withdrawn
11-2
1:55 PM
EVIDENCE OF THE SONOMA OROGENY IN THE SOUTHERN INYO MOUNTAINS
ALMEIDA, Rafael1, MALONEY, Garret1, KIMBROUGH, David1 and BRADLEY, Kyle2, (1)Earth and Environmental Science, San Diego State University, 5500 Campanile Drive MC1020, San Diego, CA 92182, (2)Dept of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853-1504
11-3
2:15 PM
RECONSTRUCTING THE SAN RAFAEL MTS. MÉLANGE, SANTA BARBARA COUNTY, CALIFORNIA
WAHL, Arthur D., 516 Pearson Rd., Port Hueneme, CA 93041
11-4
2:35 PM
SIGNIFICANCE OF FRICTIONAL MELTS AND THEIR KINEMATICS DURING SEISMIC RUPTURE: EXAMPLE FROM EXTENSIVE PSEUDOTACHYLYTE NETWORKS IN THE SANTA ROSA MOUNTAINS, CALIFORNIA
BENOIT, Haley, School of Geosciences, University of Louisiana at Lafayette, 611 McKinley St, Lafayette, LA 70504, FERRÉ, Eric C., Department of Geological Sciences, New Mexico State University, 1255 N. Horseshoe St., Las Cruces, NM 88003 and GEISSMAN, John W., Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131
11-5
2:55 PM
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)
    • 11-6
    3:15 PM
    ACCOMMODATION OF OPPOSITE VERGENCY BETWEEN TWO DETACHMENT FAULTS: INSIGHTS FROM THE THERMAL HISTORY OF THE EL JARALITO BATHOLITH (MEXICO)
    NOURY, Melanie, ALMADA, Víctor and CALMUS, Thierry, Universidad Nacional Autonoma de México, Instituto de Geologia, ERNO, L. D. Colosio, s/n, col. Los Arcos, Hermosillo, SO 83500, Mexico
     
    3:35 PM
    Break
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