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Cordilleran Section - 99th Annual (April 1–3, 2003)

Session No. 12
Tuesday, 1 April 2003: 2:15 PM-5:30 PM

S1. Tectonics, Structure, and Geophysics of the Gulf of California–Salton Trough Region II

MARGINS initiative

 

Arturo Martin and Gary Axen, Conveners
Paper #
Start Time
1
2:15 PM
STRUCTURAL AND MAGMATIC EVOLUTION OF THE SONORAN RIFTED MARGIN: A PRELIMINARY REPORT
GANS, Phillip B.1, BLAIR, K.1, MACMILLAN, I.1, WONG, M.1 and ROLDAN, J.2, (1)Geological Sciences, UCSB, Santa Barbara, CA 93106, (2)UNAM-CRN, Hermosillo, Mexico, gans@geol.ucsb.edu, gans@geol.ucsb.edu
2
2:35 PM
TIMING, MAGNITUDE, AND RATE OF EXTENSIONAL UNROOFING AT THE SIERRA MAZATAN METAMORPHIC CORE COMPLEX, SONORA, MEXICO: RESULTS FROM 40AR/39AR THERMOCHRONOLOGY
WONG, Martin S., Department of Geological Sciences, Univ of California, Santa Barbara, Building 526, Santa Barbara, CA 93106-9630, GANS, Phillip B., Department of Geological Sciences, Univ of California, Santa Barbara, CA 93106-9630 and ROLDÁN-QUINTANA, Jaime, Instituto de Geologia, Estacion Regional del Noroeste, Universidad National Autonoma de Mexico, Apartado Postal 1039, Hermosillo, 83000, Mexico, mwong@umail.ucsb.edu, mwong@umail.ucsb.edu
3
2:55 PM
TECTONIC IMPLICATIONS OF ABANDONED AND ACTIVE BASIN ARCHITECTURE IN THE NORTHERN GULF OF CALIFORNIA RIFT
ARAGON-ARREOLA, Manuel1, MARTÍN-BARAJAS, Arturo1 and STOCK, Joann M.2, (1)Departamento de Geologia, CICESE, Km. 107 Carretera Tijuana-Ensenada, Apartado Postal 2732, Ensenada, B.C, C.P. 22860, Mexico, (2)Seismological Laboratory, California Institute of Technology, M/C 252-21, 1200 East California Blvd, Pasadena, CA 91125, maragon@cicese.mx, maragon@cicese.mx
4
3:15 PM
STRUCTURE AND TECTONIC OF THE WAGNER BASIN IN THE GULF OF CALIFORNIA USING MULTICHANNEL SEISMIC REFLECTION PROFILES
HURTADO, A.D.A.1, MARTIN-BARAJAS, A.1, GONZALEZ, A.F.1, CONTRERAS, J.P.1 and MORTERA, C.G.2, (1)Ciencias de la Tierra - Geologia, CICESE, km 107 carretera Tijuana - Ensenada, Ensenada, B.C, 22860, Mexico, (2)Sismologia, Instituto de Geofisica - UNAM, Ciudad Universitaria - Circuito Interior, Mexico, D.F, 04510, Mexico, adhurtado@yahoo.com, adhurtado@yahoo.com
 
3:35 PM
Discussion
 
3:50 PM
Break
5
4:05 PM
ANOMALOUS CRUSTAL DEFORMATION IN NORTHEASTERN BAJA AND MEXICALI VALLEY
BENNETT, Richard A., Harvard-Smithaonian Ctr for Astrophysics, 60 Garden Street, MS 42, Cambridge, MA 02138 and GONZALEZ GARCIA, Javier, CICESE, Ensenada, Baja California, Mexico, rbennett@cfa.harvard.edu, rbennett@cfa.harvard.edu
6
4:25 PM
ONE DECADE OF INTERSEISMIC GPS OBSERVATIONS OVER THE PACIFIC-NORTH AMERICA PLATE BOUNDARY AT THE LATITUDE OF THE HEAD OF THE GULF OF CALIFORNIA
GONZALEZ-GARCIA Sr, J. Javier, Seismology, Earth Sciences Division, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, km 107 carretera Tijuana-Ensenada, Ensenada, Baja California, 22860, Mexico, javier@cicese.mx, javier@cicese.mx
7
4:45 PM
STRAIN TRANSFER ACROSS THE TRANSTENSIVE IMPERIAL AND MEXICALI VALLEYS OF SOUTHERN CALIFORNIA AND NORTHERN BAJA CALIFORNIA, MEXICO: TRANSITION FROM EXTENSION TO STRIKE-SLIP DOMAINS AND IMPLICATIONS FOR PATTERNS OF EARTHQUAKE GENERATION
ROCKWELL, Thomas K., Department of Geological Sciences, San Diego State Univ, San Diego, CA 92182-1020, trockwell@geology.sdsu.edu, trockwell@geology.sdsu.edu
8
5:05 PM
LATE PLEISTOCENE SLIP RATE ON THE COACHELLA VALLEY SEGMENT OF THE SAN ANDREAS FAULT AND IMPLICATIONS FOR REGIONAL SLIP PARTITIONING
DORSEY, Rebecca J., Dept. of Geological Sciences, 1272 University of Oregon, Eugene, OR 97403-1272, rdorsey@darkwing.uoregon.edu, rdorsey@darkwing.uoregon.edu
 
5:25 PM
Concluding Remarks
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