Rocky Mountain (53rd) and South-Central (35th) Sections, GSA, Joint Annual Meeting (April 29–May 2, 2001)
Session No. 3 Monday, 30 April 2001
8:00 AM-12:00 PM, Sheraton Old Town Hotel: Alvarado AB

S11. Paleoproterozoic Tectonics of the Southwestern United States

Karl E. Karlstrom and Mike Williams, Presiding
 Paper #Start Time
3-08:00 AM A TESTABLE HYPOTHESIS FOR THE DISTRIBUTION OF PALEOPROTEROZOIC PROVINCES ALONG THE SW MARGIN OF LAURENTIA: INSIGHTS FROM NW SONORA, MEXICO: IRIONDO, Alexander, USGS, MS 974, Box 25046, DFC, Denver, CO 80225, iriondo@usgs.gov and PREMO, Wayne R., USGS, MS 963, Box 25046, DFC, Denver, CO 80225
3-08:15 AM STRUCTURAL AND METAMORPHIC SIMILARITIES BETWEEN PROTEROZOIC ROCKS IN THE CERBAT AND HUALAPAI MOUNTAINS, NORTHWESTERN ARIZONA: DUEBENDORFER, Ernest M., Department of Geology, Northern Arizona Univ, Flagstaff, AZ 86011, ernie.d@nau.edu, HOISCH, Thomas D., Department of Geology, Northern Arizona Univ, Flagstaff, AZ 86011, and CHAMBERLAIN, Kevin R., Department of Geology and Geophysics, Univ of Wyoming, Laramie, WY 82071
3-08:30 AM PUNCTUATED GRANITOID MAGMATISM AS CAUSE AND EFFECT OF PROTEROZOIC TECTONISM IN THE GRAND CANYON, ARIZONA: SEAMAN, S. J.1, WILLIAMS, M. L.1, and KARLSTROM, K. E.2, (1) Department of Geosciences, Univ of Massachusetts, Amherst, MA 01003, sjs@geo.umass.edu, (2) Department of Earth and Planetary Sciences, Univ of New Mexico, Albuquerque, NM 87131
3-08:45 AM PROTEROZOIC CRUSTAL EVOLUTION IN THE PHOENIX MOUNTAINS, ARIZONA: REYNOLDS, Stephen J., JOHNSON, Julia K., and JONES, David A., Dept. of Geological Sciences, Arizona State Univ, Tempe, AZ 85287-1404, sreynolds@asu.edu
 9:00 AM Poster Summaries: Frey, James
 9:15 AM Poster Summaries: Allard, Kruckenberg, Nyb
3-09:30 AM TECTONIC HISTORY OF THE PROTEROZOIC COLORADO PROVINCE, SOUTHERN ROCKY MOUNTAINS: SIMS, Paul K., US Geol Survey, MS 905, PO Box 25046, Denver, CO 80225-0046, hstein@cnr.colostate.edu and STEIN, Holly J., AIRIE Program, Department of Earth Rscs, Colorado State University, Fort Collins, CO 80523-1482
 9:45 AM Poster Summaries: Tyson, Jessup, Livaccari
 10:00 AM Break
3-010:15 AM U-PB ZIRCON GEOCHRONOLOGY AND SM-ND SYSTEMATICS OF PALEOPROTEROZOIC ROCKS, MT. OURAY, COLORADO: EATON, Jonathan K., Geology, Carleton College, 300 N. College St, Northfield, MN 55057, eatonj@carleton.edu, BOARDMAN, Shelby J., Carleton College, 1 N College St, Northfield, MN 55057-4044, and BICKFORD, M. E., Dept. of Earth Sciences, Syracuse Univ, Syracuse, NY 13244
3-010:30 AM TECTONIC SIGNIFICANCE OF AN EARLY PROTEROZOIC OPHIOLITE FRAGMENT IN THE COLORADO FRONT RANGE: REMNANT OF AN OCEANIC FRACTURE ZONE?: CAVOSIE, Aaron, Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131-1116, acavosie@unm.edu and SELVERSTONE, Jane, Univ New Mexico, 141 Northrop Hall, Albuquerque, NM 87131-1116
3-010:45 AM MICROPROBE MONAZITE GEOCHRONOLOGY FROM THE MANZANO MOUNTAINS, NEW MEXICO: DISTINGUISHING STAGES IN A LONG-LIVED AND REACTIVATED OROGEN: WILLIAMS, Michael L.1, KARLSTROM, Karl E.2, JERCINOVIC, Michael J.3, and STEVENS, Liane3, (1) Department of Geosciences, Univ of Massachusetts, Amherst, MA 01002, mlw@geo.umass.edu, (2) Earth and Planetary Sciences, Univ of New Mexico, Albuquerque, NM 87131, (3) Department of Geosciences, Univ of Massachusetts, Morrill Science Center, 611 North Pleasant Street, Amherst, MA 01003-5820
 11:00 AM Poster Summaries: Melis, Simmons, Rogers
3-011:15 AM GEOCHRONOLOGICAL AND THERMOCHRONOLOGICAL CONSTRAINTS ON PROTEROZOIC LITHOSPHERIC EVOLUTION OF THE SOUTHWESTERN U.S: BOWRING, Samuel A.1, MATZEL, Jennifer P.1, KARLSTROM, Karl E.2, and HAWKINS, David P.3, (1) EAPS, MIT, Cambridge, MA 02139, sbowring@mit.edu, (2) Earth and Planetary Sciences, Univ of New Mexico, Albuquerque, NM 87131, (3) Geology and Geography, Denison Univ, Granville, OH 43023
 11:30 AM Discussion

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