GSA Annual Meeting, November 5-8, 2001

Session No. 179
Thursday, 8 November 2001: 1:30 PM-5:30 PM

Precambrian Potpourri

 

R. Michael Easton and Marvin P. Carlson, Chairs
Paper #
Start Time
0
1:30 PM
NEWLY RECOGNIZED BASEMENT(?) TO THE BELT SUPERGROUP, NORTHERN IDAHO
LEWIS, Reed S., Idaho Geol. Survey, Univ. of Idaho, Moscow, ID 83844-3014, BURMESTER, Russell F., Geology Department, Western Washington Univ, Belllingham, WA 98225 and MCCLELLAND, William C., Dept. of Geol. Sciences, Univ of Idaho, Moscow, ID 83844, reedl@uidaho.edu, reedl@uidaho.edu
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1:45 PM
DID WEST TEXAS CLOSE, THEN OPEN, THEN CLOSE AGAIN? A POSSIBLE EXPLANATION FOR THE SOUTHERN GRANITE-RHYOLITE TERRANE
GRIMES, Stephen W., Memorial Univ Newfoundland, Dept Earth Science, St Johns's, NF A1B 3X5, Canada, sgrimes@sparky2.esd.mun.ca, sgrimes@sparky2.esd.mun.ca
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2:00 PM
ACCRETIONARY BASEMENT CONTROL ON STRUCTURE OF CENTRAL USA
CARLSON, Marvin P., Nebraska Geol Survey, 113 Nebraska Hall, Lincoln, NE 68588-0517, mcarlson1@unl.edu, mcarlson1@unl.edu
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2:15 PM
PROTEROZOIC AUSTRALIA AND PLATE TECTONICS
BETTS, Peter G., Australian Crustal Research Centre, Monash Univ, Wellington Rd, Melbourne, 3800, Australia and GILES, David, Australian Crustal Research Centre, Monash Univ, Wellington Road, Clayton, 3800, Australia, pbetts@mail.earth.monash.edu.au, pbetts@mail.earth.monash.edu.au
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2:30 PM
PROTEROZOIC INTERACTIONS BETWEEN AUSTRALIA AND NORTH AMERICA
GILES, David, Australian Crustal Research Centre, Monash Univ, Wellington Road, Clayton, 3800, Australia and BETTS, Peter G., Australian Crustal Research Centre, Monash Univ, Wellington Rd, Melbourne, 3800, Australia, dgiles@mail.earth.monash.edu.au, dgiles@mail.earth.monash.edu.au
0
2:45 PM
GRENVILLE-AGED PALEOGEOGRAPHY AND DEFORMATION OF THE AMAZON CRATON: EARLY COLLISION WITH LAURENTIA?
TOHVER, Eric1, VAN DER PLUIJM, Ben1 and VAN DER VOO, Rob2, (1)Geological Sciences, Univ of Michigan, 2534 CC Little Building, Ann Arbor, MI 48109-1063, (2)dept. geological sciences, Univ of Michigan, 2534 C.C. Little Building, Ann Arbor, MI 48109-1063, etohver@umich.edu, etohver@umich.edu
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3:00 PM
PRE-GRENVILLIAN TECTONIC SIGNIFICANCE OF HIGH-GRADE GNEISSES IN THE GRENVILLE PROVINCE, ONTARIO
SLAGSTAD, Trond, JAMIESON, Rebecca A. and CULSHAW, Nick, Department of Earth Sciences, Dalhousie Univ, Halifax, NS B3H 4J1, Canada, slagstad@is2.dal.ca, slagstad@is2.dal.ca
0
3:15 PM
SVECONORWEGIAN (-GRENVILLIAN) OROGENESIS IN THE SW BALTIC SHIELD–TIMING AND TECTONIC FRAMEWORK IN LIGHT OF COMPLEX ZIRCON GEOCHRONOLOGY
ANDERSSON, Jenny1, SÖDERLUND, Ulf2, MÖLLER, Charlotte2 and JOHANSSON, Leif2, (1)Department of Geological Sciences, The Ohio State Univ, 155 S. Oval Mall, Columbus, OH 43210, (2)Department of Geology, Lund University, Solvegatan 13, Lund, SE-223 62, Sweden, jenny.andersson@geol.lu.se, jenny.andersson@geol.lu.se
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3:30 PM
MONAZITE THERMOCHRONOLOGY OF THE TRANS-HUDSON OROGEN, CANADA: ID-TIMS U-PB, EMP TOTAL PB, AND AR-AR AGE COMPARISONS
SCHNEIDER, D. A., Department of Geological Sciences, Ohio Univ, Athens, OH 45701, BICKFORD, M. E., Department of Earth Sciences, Syracuse Univ, Syracuse, NY 13244, HEIZLER, M. T., NM Bureau of Mines, Socorro, NM 87801, WILLIAMS, M. L., Department of Geosciences, Univ of Massachusetts, Amherst, MA 01003 and JERCINOVIC, M. J., Dept. of Geosciences, Univ. of Massachusetts, Amhurst, MA 01003, daschn01@syr.edu, daschn01@syr.edu
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3:45 PM
PALEOMAGNETIC RESULTS FROM THE NEOPROTEROZOIC UINTA MOUNTAIN GROUP, UTAH AND COLORADO
ASHBY, James M.1, GEISSMAN, John Wm.1 and WEIL, Arlo B.2, (1)Department of Earth and Planetary Sciences, The Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131-1116, (2)Department of Geology, Bryn Mawr College, Bryn Mawr, PA 19010, jmashby@unm.edu, jmashby@unm.edu
0
4:00 PM
STRUCTURAL LAYERING AT THE JUNCTION OF ARCHEAN QUETICO AND WAWA SUBPROVINCES, QUETICO PROVINCIAL PARK, ONTARIO
WOODARD, Henry H., Geology, Beloit College, 700 College Street, Beloit, WI 53511, woodard@beloit.edu, woodard@beloit.edu
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4:15 PM
TECTONIC LINKS BETWEEN PROTEROZOIC OROGENIC BELTS IN SOUTHERN AFRICA BENEATH THE KALAHARI DESERT
HANSON, R.1, SINGLETARY, S.2, MARTIN, M.2, BOWRING, S.2, KEY, R.3, DIRENG, B.4, MAJAULE, T.4, RAMOKATE, L.4 and KROL, M.5, (1)Geology Dept, TCU, Fort Worth, TX 76129, (2)EAPS, MIT, Cambridge, MA 02139, (3)British Geol Survey, Edinburgh, EH93LA, United Kingdom, (4)Botswana Geol Survey, Lobatse, Botswana, (5)Bridgewater State College, Bridgewater, MA 02325, r.hanson@tcu.edu, r.hanson@tcu.edu
0
4:30 PM
PALEOMAGNETISM AND GEOCHRONOLOGY OF WIDESPREAD DOLERITE SILLS IN BOTSWANA RELATED TO THE 1.1 GA UMKONDO LARGE IGNEOUS PROVINCE
PANCAKE, J.1, HANSON, R.1, GOSE, W.2, RAMEZANI, J.3, BOWRING, S.3 and DOWNEY, W.4, (1)Geol. Dept, TCU, Fort Worth, TX 76109, (2)Geol. Sci. Dept, Univ. Texas, Austin, TX 78712, (3)EAPS, MIT, Cambridge, MA 02139, (4)Physics Dept, Univ of Botswana, Gaborone, Botswana, hillandpancake@prodigy.net, hillandpancake@prodigy.net
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4:45 PM
P-T-TIME CONSTRAINTS ON THE METAMORPHIC ROCKS OF NORTH MADAGASCAR AND THEIR RELEVANCE ON THE ASSEMBLY OF GONDWANALAND
BUCHWALDT, Robert and TUCKER, Robert D., Department of Earth and Planetary Sciences, Washington Univ, St. Louis, MO 63130, buchwaldt@levee.wustl.edu, buchwaldt@levee.wustl.edu
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5:00 PM
Withdrawn
0
5:15 PM
ENIGMATIC "TUBE-LIKE" STRUCTURES IN THE NOONDAY DOLOMITE: CONSTRAINTS ON POSSIBLE HYPOTHESES
MARENCO, Pedro J., Earth Sciences, Univ of Southern California, 3651 Trousdale Avenue, SCI 117, Los Angeles, CA 90089-0740, CORSETTI, Frank A., Department of Earth Sciences, Univ of Southern California, Los Angeles, CA 90089 and BOTTJER, David, Department of Earth Sciences, Univ of Southern California, Los Angeles, CA 90089-0740, marenco@earth.usc.edu, marenco@earth.usc.edu