GSA Annual Meeting, November 5-8, 2001

Session No. 87
Tuesday, 6 November 2001: 1:30 PM-5:30 PM

T3. Focus on IGCP: Modern and Ancient Plate Boundaries and Orogens II: In Memory of Chris McA. Powell

GSA International Division, U.S. National Committee on the Geological Sciences, International Geologic Correlation Program projects 453, 426, 440, 436, 433

 

Suzanne M. Kay, Eldridge M. Moores and Mark Cloos, Advocates
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Start Time
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1:30 PM
EARLY PALEOZOIC EVENTS AT THE GONDWANA MARGIN
VON RAUMER Sr, Jürgen F., Earth Sciences, Université de Fribourg, Pérolles, Fribourg, CH-1700, Switzerland and STAMPFLI II, Gérard M., Institut de Géologie, Université de Lausanne, UNIL BFSH2, Lausanne, 1015, Switzerland, Juergen.vonRaumer@unifr.ch, Juergen.vonRaumer@unifr.ch
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1:45 PM
BYRD GLACIER DISCONTINUITY: A MAJOR TECTONIC FEATURE ORTHOGONAL TO THE PALEO-PACIFIC MARGIN OF GONDWANALAND
STUMP, Edmund1, GOOTEE, Brian1 and TALARICO, Franco2, (1)Dept. of Geological Sciences, Arizona State Univ, Tempe, AZ 85287, (2)Dipt. di Scienze della Terra, Univ. di Siena, Siena, Italy, ed.stump@asu.edu, ed.stump@asu.edu
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2:00 PM
ZIRCON AGE LINKS BETWEEN PROTEROZOIC LAURENTIA AND EAST ANTARCTICA: COMPARISON OF ~1.7 AND ~1.4 GA SIGNATURES
GOODGE, John W., Dept. of Geological Sciences, Southern Methodist University, Dallas, TX 75275, FANNING, C. Mark, PRISE, Research School of Earth Sciences, Australian National Univ, Canberra, ACT, 0200, Australia, WILLIAMS, Ian S., Research School of Earth Sciences, Australian National University, Canberra, ACT, 0200, Australia and MYROW, Paul, Dept. of Geology, Colorado College, Colorado Springs, CO 80903, jgoodge@mail.smu.edu, jgoodge@mail.smu.edu
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2:15 PM
HISTORY OF OROGENY AND ACCRETION ALONG THE EASTERN AUSTRALIAN MARGIN OF GONDWANA
FOSTER, David A.1, GRAY, David R.2, SPAGGIARI, Catherine V.2, OFFLER, Robin3 and HARTLEY, Michael1, (1)Univ Florida, PO Box 112120, Gainesville, FL 32611-2120, (2)Monash Univ, Wellington Rd, Clayton, VIC 3168, Australia, (3)Geology, Univ of New Castle, New Castle, dfoster@geology.ufl.edu, dfoster@geology.ufl.edu
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2:30 PM
EXOTIC CRUSTAL FRAGMENTS ON THE PACIFIC MARGIN OF GONDWANA
VAUGHAN, Alan P.M.1, MILLAR, Ian L.2, PANKHURST, Robert J.2 and FANNING, C. Mark3, (1)Geological Sciences, British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom, (2)Geological Sciences, British Antarctic Survey, c/o NERC Isotope Geosciences Laboratory, Keyworth, Nottingham, NG12 5GG, United Kingdom, (3)Australian National Univ, Research School of Earth Sciences, Mills Rd, Canberra, 0200, Australia, a.vaughan@bas.ac.uk, a.vaughan@bas.ac.uk
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2:45 PM
STRUCTURE, WHITE MICAS AND STRAIN ACROSS THE TALAS ALA TAU (NORTHERN TIEN SHAN). INSIGHTS ON THE TECTONIC EVOLUTION OF CENTRAL ASIA
GUTIERREZ-ALONSO, Gabriel1, ABAD, M. Isabel2, CABERO, Ana3, NIETO, Fernando2, GERTNER, Igor4 and BECKER, Alex5, (1)Univ Salamanca, Facultad de Ciencias, Salamanca, 37008, Spain, (2)Mineralogy and Petrology, Universidad de Granada, Campus de Fuentenueva s/n, Granada, 18071, Spain, (3)Departamento de Geología, Universidad de Salamanca, Plaza de la Merced s/n, Salamanca, 37008, Spain, (4)Geology Department, Tomsk State Univ, Lenin Street, 36, Tomsk, 634050, Russia, (5)Textonic Consulting LDT, 1061 Brickley Close, North Saanich, V8L 5L1, Canada, gabi@gugu.usal.es, gabi@gugu.usal.es
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3:00 PM
TECTONIC EROSION, DIAPIRIC FLOW, AND EMPLACEMENT OF UHP ROCKS DURING OCEANIC SUBDUCTION: ORIGIN OF THE NORTH QAIDAM UHP GNEISSES
YIN, An1, GEHRELS, George E.2, MANNING, Craig E.1 and MENOLD, Carie1, (1)Department of Earth and Space Sciences, Univ of California, Los Angeles, CA 90095-1567, (2)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721, yin@ess.ucla.edu, yin@ess.ucla.edu
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3:15 PM
ZIRCON AND APATITE (U-TH)/HE THERMOCHRONOLOGY OF THE DABIE SHAN, CHINA
REINERS, Peter W.1, ZHOU, Zuyi2, XU, Changhai2 and EHLERS, Todd3, (1)Geology and Geophysics, Yale Univ, 210 Whitney Ave, New Haven, CT 06511, (2)Marine Geology and Geophysics, Tongji Univ, 1239 Siping Rd, Shanghai, 200092, China, (3)Earth and Space Sciences, Univ of Washington, Box 351310, Seattle, WA 99125, peter.reiners@yale.edu, peter.reiners@yale.edu
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3:30 PM
FLAT SLAB SUBDUCTION IN THE GEOLOGICAL RECORD: CONSIDERATION OF MODERN ANALOGUES
MURPHY, J. Brendan, Geology, St. Francis Xavier Univ, P.O. Box 5000, Antigonish, NS B2G 2W5, Canada, HYNES, Andrew, Earth and Planetary Sciences, McGill Univ, 3450 University Street, Montreal, QC H3A 2A7, Canada, JOHNSTON, Stephen T., School of Earth and Ocean Sciences, Univ of Victoria, Victoria, BC VW8 3P6, Canada and OPPLIGER, Gary L., Mackay School of Mines, Univ of Nevada Reno, Reno, NV 89557-0138, bmurphy@stfx.ca, bmurphy@stfx.ca
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3:45 PM
EASTERN PACIFIC ANALOGUE FOR AVALONIA AND CORRELATIVE PERI-GONDWANAN TERRANES
KEPPIE, John Duncan, Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico D.F, 04510, Mexico, NANCE, R. Damian, Department of Geological Sciences, Ohio Univ, Athens, OH 45701, MURPHY, J. Brendan, Geology, St. Francis Xavier Univ, P.O. Box 5000, Antigonish, NS B2G 2W5, Canada and DOSTAL, Jarda, Earth Sciences, St. Mary's Univ, Halifax, NS, Canada, duncan@servidor.unam.mx, duncan@servidor.unam.mx
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4:00 PM
LATE CRETACEOUS-EARLY EOCENE RECORD OF OBLIQUE CONVERGENCE ALONG THE NORTHEAST PACIFIC RIM: CONSTRAINTS ON RELATIVE MOTION OF THE NORTH AMERICA-FARALLON PLATES AND LOCATION OF THE KULA-FARALLON TRIPLE JUNCTION
ROESKE, Sarah M., Department of Geology, Univ of California at Davis, 1 Shields Avenue, Davis, CA 95616, SNEE, Lawrence W., MS 974, U.S. Geol Survey, Denver Federal Center, Denver, CO 80225 and PAVLIS, Terry, Univ New Orleans, 2000 Lakeshore Dr, New Orleans, LA 70148-0001, roeske@geology.ucdavis.edu, roeske@geology.ucdavis.edu
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4:15 PM
TECTONIC SETTING OF THE SMARTVILLE AND SLATE CREEK COMPLEXES, NORTHERN SIERRA NEVADA, CALIFORNIA: EVIDENCE FROM ZIRCON GEOCHRONOLOGY AND COMMON PB STUDIES
BICKFORD, M. E., Dept. of Earth Sciences, Syracuse Univ, Syracuse, NY 13244 and DAY, H. W., Department of Geology, Univ of California, Davis, CA 95616, mebickfo@syr.edu, mebickfo@syr.edu
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4:30 PM
INSIGHT INTO THE ARC TECTONICS OF THE SOUTHWESTERN CORDILLERA VIA THE MESOZOIC DEFORMATION HISTORY OF THE PANAMINT RANGE, CALIFORNIA
ANDREW, Joe E., Department of Geology, University of Kansas, 120 Lindley Hall, Lawrence, KS 66045, jandrew@ukans.edu, jandrew@ukans.edu
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4:45 PM
THE GROSS SPITZKOPPE GRANITE STOCK OF THE CRETACEOUS DAMARALAND ANOROGENIC PROVINCE IN NAMIBIA—AN EXAMPLE OF BIMODAL MAGMATISM RELATED TO CONTINENTAL RIFTING
HAAPALA, Ilmari J. and FRINDT, Stephen, Department of Geology, Univ of Helsinki, P.O. Box 64, Helsinki, FIN - 00014, Finland, ilmari.haapala@helsinki.fi, ilmari.haapala@helsinki.fi
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5:00 PM
PROTEROZOIC GRANITE SYSTEMS OF THE CENTRAL UNITED STATES AND THEIR BEARING ON PROTEROZOIC CONTINENTAL RECONSTRUCTIONS
VAN SCHMUS, W. Randall, Dept. of Geology, Univ. of Kansas, 1475 Jayhawk Blvd, Lawrence, KS 66045-7613, rvschmus@ku.edu, rvschmus@ku.edu
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5:15 PM
RAPID GENERATION OF CONTINENTAL CRUST IN PLATE-CONVECTION MODE
COLLINS, William J., Univ Newcastle, Dept Geology, Newcastle, 2308, Australia, bill.collins@newcastle.edu.au, bill.collins@newcastle.edu.au
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