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

Session No. 29
Wednesday, 2 April 2003: 2:15 PM-5:30 PM

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

 

Alexander Iriondo and Martin Valencia-Moreno, Advocates
Paper #
Start Time
1
2:15 PM
RECONNAISSANCE STUDIES OF PROTEROZOIC CRYSTALLINE ROCKS IN SONORA: 1968-1978: A STIMULUS TO NEW IDEAS
ANDERSON, Thomas H., Geology and Planetary Science, Univ of Pittsburgh, 200 SRCC, Pittsburgh, PA 15260 and SILVER, Leon T., California Institute Technology, 1201 E California Blvd MC 100-23, Pasadena, CA 91125-0001, taco@pitt.edu, taco@pitt.edu
2
2:35 PM
U-PB ZIRCON GEOCHRONOLOGY OF PALEOPROTEROZOIC BASEMENT IN NORTHWESTERN SONORA, MEXICO: EVIDENCE FOR AFFINITY TO SW US PROVINCES
PREMO, Wayne R., U.S. Geol Survey, MS 963, Box 25046, Denver Federal Center, Denver, CO 80225, IRIONDO, Alexander, US Geol Survey, Denver, CO and NOURSE, Jonathan A., Department of Geological Sciences, California State Polytechnic Univ, Pomona, CA 91768, wpremo@usgs.gov, wpremo@usgs.gov
3
2:55 PM
METAMORPHISM AND OROGENESIS OF PROTEROZOIC ROCKS IN THE SOUTHWESTERN MOJAVE PROVINCE
COLEMAN, Drew S., Department of Geological Sciences, Univ of North Carolina, CB#3315, Chapel Hill, NC 27599, BARTH, Andrew P., Department of Geology, Indiana Univ-Purdue Univ, Indianapolis, Indianapolis, IN 46202 and WOODEN, Joseph L., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, dcoleman@unc.edu, dcoleman@unc.edu
4
3:15 PM
THE CABORCA BLOCK: AN INHOMOGENEOUS PIECE OF PALEOPROTEROZOIC CRUST IN SONORA
IRIONDO, Alexander, USGS, MS 974, Box 25046, DFC, Denver, CO 80225 and PREMO, W.R., USGS, MS 963, Box 25046, DFC, Denver, CO 80225, iriondo@usgs.gov, iriondo@usgs.gov
 
3:35 PM
Break
5
3:50 PM
GNEISSES OF THE NW SONORA-SW ARIZONA BORDER REGION: TWO DISTINCT PALEOPROTEROZOIC COMPLEXES AT THE SOUTHWEST EDGE OF LAURENTIA
NOURSE, Jonathan A., Department of Geological Sciences, California State Polytechnic Univ, Pomona, CA 91768, PREMO, Wayne R., U.S. Geol Survey, MS 963, Box 25046, Denver Federal Center, Denver, CO 80225 and IRIONDO, Alexander, US Geol Survey, Denver, CO, janourse@csupomona.edu, janourse@csupomona.edu
6
4:10 PM
ISOTOPIC EVIDENCE ON THE NATURE OF PRECAMBRIAN BASEMENT AND OVERLYING SEDIMENTARY ROCKS, CABORCA, SONORA
FARMER, G. Lang1, BOWRING, Samuel A.2, ESPINOZA, Inocente3 and MATZEL, Jennifer P.2, (1)Univ Colorado - Boulder, PO Box 399, Boulder, CO 80309-0399, (2)EAPS, MIT, Cambridge, MA 02139, (3)Departamento de Geologia, Universidad de Sonora, Hermosillo, Sonora, 83000, Mexico, farmer@cires.colorado.edu, farmer@cires.colorado.edu
7
4:30 PM
LOCATION OF THE SOUTHWESTERN EDGE OF PROTEROZOIC NORTH AMERICA BASED ON SR AND ND ISOTOPIC DATA FROM LARAMIDE GRANITIC ROCKS OF SONORA, NW MEXICO
VALENCIA-MORENO, Martín1, RUIZ, Joaquin2 and PATCHETT, Jonathan P.2, (1)Estación Regional del Noroeste, Instituto de Geología, Universidad Nacional Autónoma de México, L.D. Colosio y Madrid S/N, Hermosillo, 83240, Mexico, (2)Department of Geosciences, Univ of Arizona, Gould-Simpson Bldg, Tucson, 85721, valencia@geologia.unam.mx, valencia@geologia.unam.mx
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