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2004 Denver Annual Meeting (November 7–10, 2004)

Session No. 143
Tuesday, 9 November 2004: 8:00 AM-12:00 PM

T83. Cordilleran Arc Magmatism, BATHOLITHS and Continental Crustal Genesis I

GSA Geophysics Division; GSA Structural Geology and Tectonics Division

 

Mihai N Ducea, Christopher Andronicos and Paul Wetmore, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:15 AM
GEOLOGIC EVOLUTION OF THE XOLAPA ARC, SOUTHERN MEXICO
DUCEA, Mihai N.1, GEHRELS, George1, SHOEMAKER, Sarah1, VALENCIA, Victor2 and RUIZ, Joaquin3, (1)Geosciences, Univ of Arizona, Tucson, AZ 85721, (2)Department of Geosciences, Univ of Arizona, 1040 E Fourth Street, Tucson, AZ 85721, (3)Dean, College of Science, Univ of Arizona, PO BOX 210077, Tucson, AZ 85721, ducea@geo.arizona.edu, ducea@geo.arizona.edu
2
8:30 AM
U-PB SINGLE CRYSTAL SYSTEMATICS: CONSTRAINTS FOR THE MAGMATISM AND NORTHWEST BOUNDARY OF THE XOLAPA COMPLEX, MEXICO
VALENCIA, Victor A.1, DUCEA, Mihai N.2, RUIZ, Joaquin3, GEHRELS, George2 and SHOEMAKER, Sarah2, (1)Geosciences, Univ of Arizona, 1040 E Fourth Street, Tucson, AZ 85721-0077, (2)Geosciences, Univ of Arizona, Tucson, AZ 85721, (3)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721, victorv@geo.arizona.edu, victorv@geo.arizona.edu
3
8:45 AM
COMPARATIVE ANALYSIS OF THE SIERRA NEVADA, MOJAVE/SALINIAN, AND THE PENINSULAR RANGE BATHOLITHS
ZANDT, George and GILBERT, Hersh J., Department of Geosciences, Univ of Arizona, Gould-Simpson Building 1040 E. 4th Street, Tucson, AZ 85721, zandt@geo.arizona.edu, zandt@geo.arizona.edu
4
9:00 AM
THE CRETACEOUS SALINIAN CONTINENTAL ARC: OVERVIEW AND NEW ADVANCES
KIDDER, Steven1, DUCEA, Mihai1, BARBEAU, David2 and GEHRELS, George1, (1)Department of Geosciences, Univ of Arizona, 1040 E. 4th st, Tucson, AZ 85721, (2)Department of Geologic Sciences, Univ of South Carolina, Columbia, SC 29208, skidder@geo.arizona.edu, skidder@geo.arizona.edu
5
9:15 AM
RESULTS OF RADIOGENIC HEAT PRODUCTION MEASUREMENTS THROUGH THE ENTIRE THICKNESS OF THE SIERRA NEVADA BATHOLITH, CALIFORNIA: A NON-EXPONENTIAL DISTRIBUTION CONTROLLED BY HYDROTHERMAL PROCESSES?
BRADY, Robert J.1, DUCEA, Mihai N.2, KIDDER, Steven2 and SALEEBY, Jason3, (1)Department of Geology and Geophysics, Univ of Calgary, 2500 University Dr. N.W, Calgary, AB T2N 1N4, Canada, (2)Department of Geological Sciences, Univ of Arizona, Tucson, AZ 85721, (3)California Institute Technology, Pasadena, CA 91125-0001, rbrady@ucalgary.ca, rbrady@ucalgary.ca
6
9:30 AM
TEMPORAL EVOLUTION OF MID-CRUSTAL SHEETED INTRUSIONS: EVIDENCE FROM U-PB GEOCHRONOLOGY OF THE TENPEAK, ENTIAT AND SEVEN-FINGERED JACK INTRUSIVE SUITES, NORTH CASCADES, WA
MATZEL, Jennifer, Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachussetts Ave, Cambridge, MA 02139, BOWRING, Samuel, Dept of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, MILLER, Robert, Department of Geology, San Jose State Univ, San Jose, CA 95192-0102 and PATERSON, Scott, Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740, jpmatzel@MIT.EDU, jpmatzel@MIT.EDU
7
9:45 AM
BULK ASSIMILATION, REACTIVE CRYSTALLIZATION AND THE CRYPTIC NATURE OF CRUST-MANTLE MIXING IN PLUTONS: A CONCEPTUAL MODEL
BEARD, James S.1, RAGLAND, Paul C.1 and CRAWFORD, Maria Luisa2, (1)Virginia Museum of Nat History, 1001 Douglas Ave, Martinsville, VA 24112, (2)Bryn Mawr College, 101 N Merion Ave, Bryn Mawr, PA 19010-2899, jbeard@vmnh.net, jbeard@vmnh.net
 
10:00 AM
Break
8
10:15 AM
BATHOLITHS: AN INTEGRATED GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL STUDY OF THE FORMATION OF CONTINENTS
ANDRONICOS, Christopher L., Department of Geological Sciences, The Univ of Texas at El Paso, 500 W University Ave, El Paso, TX 79968 and DUCEA, Mihai, Department of Geosciences, Univ of Arizona, 1040 E. 4th st, Tucson, AZ 85721, chris@geo.utep.edu, chris@geo.utep.edu
9
10:30 AM
PRELIMINARY RESULTS OF THE PETROLOGICAL-GEOCHEMICAL COMPONENT TO THE BATHOLITHS PROJECT
WETMORE, Paul H., Geosciences, Univ of Arizona, 1040 E. Fourth st, Gould-Simpson Bldg, Tucson, AZ 85721, KAYZAR, Theresa, Geosciences, Univ of Arizona, 1040 E. Fourth St, Gould-Simpson Bldg, Tucson, AZ 85721, DUCEA, Mihai, Geosciences, Univ of Arizona, 1040 E Fourth Street, Tucson, AZ 85721, PATCHETT, P. Jonathan, Department of Geosciences, Univ of Arizona, Tucson, AZ 85721 and GEHRELS, George, Geosciences, Univ of Arizona, Tucson, AZ 85721, pwetmore@geo.arizona.edu, pwetmore@geo.arizona.edu
10
10:45 AM
STRUCTURE OF THE JURA-CRETACEOUS COAST BELT AND ADJACENT STIKINIA NEAR BELLA COOLA, COAST MOUNTAINS, B.C.: PRELIMINARY RESULTS
RUSMORE, Margaret E.1, WOODSWORTH, Glenn J.2, DE BOER, William1, GILLISPIE, M. Shane1 and KUZIO, Matthew1, (1)Occidental College, 1600 Campus Rd, Los Angeles, CA 90041-3314, (2)Geol Survey of Canada, 101-605 Robson Street, Vancouver, BC V6B 5J3, rusmore@oxy.edu, rusmore@oxy.edu
11
11:00 AM
HYDROUS ARC MAGMATISM ASSOCIATED WITH ACCRETION, THE CENTRAL COAST MOUNTAINS OROGEN OF SOUTHEASTERN ALASKA AND NORTHERN COASTAL BRITISH COLUMBIA
CRAWFORD, M.L.1, CRAWFORD, W.A.1 and BEARD, J.S.2, (1)Geology, Bryn Mawr College, Bryn Mawr, PA 19010, (2)Virginia Museum Nat History, 1001 Douglas Ave, Martinsville, VA 24112-4717, mcrawfor@brynmawr.edu, mcrawfor@brynmawr.edu
12
11:15 AM
METAMORPHIC PRESSURE-TEMPERATURE CONDITIONS DURING TRANSPRESSION WITHIN THE ROOTS OF A TRANSPRESSIVE MAGMATIC ARC
MANSFIELD, Micheal and ANDRONICOS, Christopher L., Department of Geological Sciences, The Univ of Texas at El Paso, 500 W University Ave, El Paso, TX 79968, mansfiel@geo.utep.edu, mansfiel@geo.utep.edu
13
11:30 AM
THE ALEXANDER TERRANE BOUNDARY WITH NORTH AMERICAN MARGIN TERRANES LIES WEST OF THE COAST BATHOLITH IN SOUTHERN SOUTHEAST ALASKA
SALEEBY, Jason, California Institute Technology, Pasadena, CA 91125-0001, Jason@gps.caltech.edu, Jason@gps.caltech.edu
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