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

Session No. 40
Thursday, 3 April 2003: 2:15 PM-5:30 PM

T21. Proterozoic Basement in Sonora and Adjacent Areas: A Piece of SW Laurentia II

 

Alexander Iriondo and Martin Valencia-Moreno, Advocates
Paper #
Start Time
1
2:15 PM
EARLY AND MIDDLE PROTEROZOIC CRISTALINE BASEMENT IN SONORA, MEXICO
ALMAZÁN-VÁZQUEZ, Emilio, Departamento de Geología, Universidad de Sonora, Blvd. Luis Encinas y Rosales, Hermosillo, 83000, Mexico, RODRÍGUEZ-TORRES, Rafael, Departamento de Geología, Universidad de Sonora, Blvd. Luis Encinas, Hermosillo, 83000, Mexico and RODRIGUEZ-CASTAÑEDA, Jose Luis, Instituto de Geología, UNAM, Aptdo Postal 1039, Hermosillo, 83000, Mexico, almazan@geologia.uson.mx, almazan@geologia.uson.mx
2
2:35 PM
THE EL CRESTÓN GRANITE: A NEW CONFIRMED PALEOPROTEROZOIC LOCALITY IN THE OPODEPE AREA, NORTH-CENTRAL SONORA, MEXICO
VALENZUELA-NAVARRO, Luis Carlos, Posgrado en Ciencias dela Tierra, Estación Regional del Noroeste, Instituto de Geología, Universidad Nacional Autónoma de México, L.D. Colosio y Madrid S/N, Col. Los Arcos, Hermosillo, 83240, Mexico, VALENCIA-MORENO, Martín, Estación Regional del Noroeste, Instituto de Geología, Universidad Nacional Autónoma de México, L.D. Colosio y Madrid S/N, Hermosillo, 83240, Mexico, IRIONDO, Alexander, USGS, MS 974, Box 25046, DFC, Denver, CO 80225 and PREMO, Wayne R., U.S. Geol Survey, MS 963, Box 25046, Denver Federal Center, Denver, CO 80225, zurdoluisc@yahoo.com, zurdoluisc@yahoo.com
3
2:55 PM
SOURCE ROCK AGES AND DEPOSITIONAL AGE OF PROTEROZOIC METASEDIMENTARY ROCKS IN THE BURRO MOUNTAINS, MAZATZAL PROVINCE, SOUTHWEST NEW MEXICO: A COMPARISON OF LA-MC-ICPMS U/PB ZIRCON AGES AND ELECTRON MICROPROBE MONAZITE AGES
SANDERS, Amos1, AMATO, Jeffrey M.1 and GEHRELS, George2, (1)Geological Sciences, New Mexico State Univ, MSC 3AB, P.O. Box 30001, Las Cruces, NM 88003, (2)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721, amsander@nmsu.edu, amsander@nmsu.edu
 
3:15 PM
Break
4
3:30 PM
EARLY AND MID-PROTEROZOIC CRUST OF THE COAHUILA TERRANE PRESERVED IN XENOLITHS AT CASCADA DE BASASEACHIC, SOUTHWESTERN CHIHUAHUA
HOUSH, Todd, Department of Geological Sciences, The Univ of Texas at Austin, Austin, TX 78712, MCDOWELL, Fred W., Univ Texas - Austin, Dept Geological Sciences, C1140, Austin, TX 78712-1101, CONNELLY, James N., Geological Sciences, Univ of Texas at Austin, Austin, TX 78712 and DUEX, Timoithy W., Department of Geology, Univ of Louisiana at Lafayette, Lafayette, LA 70504, housh@mail.utexas.edu, housh@mail.utexas.edu
5
3:50 PM
AN INVENTORY OF MAFIC AND ULTRAMAFIC ROCKS OF CORDILLERAN PROTEROZOIC BASEMENT(?) IN NORTHERN SONORA, MEXICO: PRELIMINARY RESULTS
RODRIGUEZ-CASTAÑEDA, Jose Luis1, RODRÍGUEZ-TORRES, Rafael2 and ALMAZÁN-VÁZQUEZ, Emilio2, (1)Instituto de Geología, UNAM, Aptdo Postal 1039, Hermosillo, 83000, Mexico, (2)Departamento de Geología, Universidad de Sonora, Rosales y Colosio, Hermosillo, 83000, Mexico, jlrod@servidor.unam.mx, jlrod@servidor.unam.mx
6
4:10 PM
THE AIBO-TYPE (~1.1 GA) GRANITIC MAGMATISM IN NW SONORA, MEXICO: FAILED CONTINENTAL RIFTING OF RODINIA?
IRIONDO, Alexander1, MIGGINS, Daniel1 and PREMO, Wayne2, (1)USGS, MS 974, Box 25046, DFC, Denver, CO 80225, (2)USGS, MS 963, Box 25046, DFC, Denver, CO 80225, dmiggins@usgs.gov, dmiggins@usgs.gov
7
4:30 PM
GEOCHEMISTRY AND SHRIMP U-PB ZIRCON GEOCHRONOLOGY OF ANORTHOSITIC ROCKS AT SIERRA EL TECOLOTE IN THE CABORCA BLOCK, NORTHWESTERN SONORA, MEXICO
ESPINOZA, Inocente1, IRIONDO, Alex2, PREMO, Wayne2, PAZ, Francisco1 and VALENCIA, Martin3, (1)Departamento de Geologia, Universidad de Sonora, Hermosillo, Sonora, 83000, Mexico, (2)USGS, Denver, CO 80225, (3)Instituto de Geologia, UNAM-ERNO, Hermosillo, Sonora, 83000, Mexico, espinoza@marina.geologia.uson.mx, espinoza@marina.geologia.uson.mx
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