2004 Denver Annual Meeting (November 7–10, 2004)
Session No. 231 Wednesday, 10 November 2004
1:30 PM-5:30 PM, Colorado Convention Center: 709/711

Tectonics III: UHP Terranes, Ribbon Continents, Appalachians, and Mid-Continent

D.A. Schneider and Charles W. Carrigan, Presiding
 Paper #Start Time
231-11:30 PM FORMATION AND EXHUMATION OF THE WESTERN GNEISS REGION ULTRAHIGH-PRESSURE TERRANE: GEOCHRONOLOGY, STRUCTURAL GEOLOGY, AND PETROLOGY: HACKER, Bradley1, ROOT, David2, WALSH, Emily3, YOUNG, David1, JOHNSTON, Scott M.1, ANDERSEN, Torgeir4, GEHRELS, George5, MATTINSON, James1, and GROVE, Marty6, (1) Geological Sciences, Univ of California, Santa Barbara, CA 93106, hacker@geol.ucsb.edu, (2) Department of Mineral Sciences, National Museum of Nat History, Smithsonian Institution, Washington, DC 20560-0119, (3) Geology Department, Union College, Schenectady, NY 12308, (4) Department of Earth Sciences, Univ of Oslo, Oslo, N-0316, Norway, (5) Geosciences, Univ of Arizona, Tucson, AZ 85721, (6) Dept. of Earth and Space Sciences, Univ. of California, Los Angeles, CA 90095-1567
231-21:45 PM U-TH/PB GEOCHRONOLOGY OF THE NORWEGIAN ULTRAHIGH-PRESSURE TERRANE: KYLANDER-CLARK, Andrew, Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93106, kylander@geol.ucsb.edu, HACKER, Bradley R., Geological Sciences, Univ of California, Santa Barbara, CA 93106-9630, WALSH, Emily O., Geological Sciences, UCSB, Santa Barbara, CA 93106, JOHNSTON, Scott M., Geological Sciences, Univ of California, Santa Barbara, UC Santa Barbara - Building 526, Santa Barbara, CA 93106, and GEHRELS, George, Geosciences, Univ of Arizona, Tucson, AZ 85721
231-32:00 PM PELITE THERMOBAROMETRY AND MONAZITE GEOCHRONOLOGY REVEAL PRE-ULTRAHIGH-PRESSURE OROGENY IN THE HORNELEN REGION, NORWAY: JOHNSTON, Scott M., Department of Geological Sciences, Univ of California, Santa Barbara, UC Santa Barbara—Building 526, Santa Barbara, CA 93106, johnston@umail.ucsb.edu, HACKER, Bradley R., Geological Sciences, Univ of California, Santa Barbara, CA 93106-9630, GEHRELS, George, Geosciences, Univ of Arizona, Tucson, AZ 85721, and ANDERSEN, Torgeir, Department of Earth Sciences, Univ of Oslo, Oslo, N-0316, Norway
231-42:15 PM THE AMPHIBOLITE–ECLOGITE–UHP TRANSITION IN WESTERN NORWAY AND IMPLICATIONS FOR EXHUMATION TECTONICS: YOUNG, David J. and HACKER, Bradley, Geological Sciences, Univ of California, Santa Barbara, CA 93106, davey@umail.ucsb.edu
231-52:30 PM RIBBON CONTINENTS: A MARGINAL AFFAIR OF CENTRAL IMPORTANCE: SENGÖR, A.M. Celâl, Faculty of Mines, Department of Geology, Istanbul Technical Univ, Ayazaga, Istanbul, 80626, sengor@itu.edu.tr and NATAL'IN, Boris A., Istanbul Technical Univ, Ayazaga, Istanbul, 80626, Turkey
231-62:45 PM MODERN RIBBON CONTINENTS IN THE MEDITERRANEAN AND SW PACIFIC: IMPLICATIONS FOR THEIR ORIGIN, LITHOSPHERIC GEOMETRY AND TECTONIC SIGNIFICANCE: JOHNSTON, Stephen T., School of Earth & Ocean Sciences, Univ of Victoria, PO Box 3055 STN CSC, Victoria, BC V8P 3P6, stj@uvic.ca and MAZZOLI, Stefano, Istituto di Dinamica Ambientale, Universita di Urbino, Urbino, 61029, Italy
231-73:00 PM AN EASTERN EXTENSION OF GONDWANA-DERIVED TERRANES AND THE VARISCAN OROGENY IN BULGARIA: CARRIGAN, Charles W., Dept. of Geological Sciences, Univ of Michigan, 2534 C.C. Little Bldg, 425 E. University Ave, Ann Arbor, MI 48109-1063, cwcarrig@umich.edu, MUKASA, Samuel B., Department of Geological Sciences, Univ of Michigan, 2534 C.C. Little Bldg, Ann Arbor, MI 48109-1063, HAYDOUTOV, Ivan, Geological Institute, Bulgarian Academy of Sciences, Sofia, Bulgaria, and KOLCHEVA, Kristina, Dept. of Geology and Geography, Sofia Univ, Sofia, Bulgaria
 3:15 PM Break
231-83:30 PM PROTEROZOIC EVOLUTION OF THE GREAT LAKES REGION (USA & CANADA) FROM A NEW PERSPECTIVE: AN EXAMPLE OF TECTONIC SWITCHING?: SCHNEIDER, D.A., Geological Sciences, Ohio Univ, Clippinger Laboratory 316, Athens, OH 45701, schneidd@ohio.edu and HOLM, D.K., Geology, Kent State Univ, Kent, OH 44242
231-93:45 PM RE-EVALUATION OF PALEOPROTEROZOIC TECTONOTHERMAL EVENTS IN THE EASTERN PENOKEAN OROGEN, NORTHERN ONTARIO: PIERCEY, Patricia1, SCHNEIDER, D.A.1, and HOLM, D.K.2, (1) Geological Sciences, Ohio Univ, Clippinger Labs 316, Athens, OH 45701, pp159000@ohio.edu, (2) Department of Geology, Kent State Univ, Kent, OH 44242
231-104:00 PM THE APPALACHIAN INNER PIEDMONT: AN EXHUMED OROGENIC CHANNEL: HATCHER, Robert D., Earth & Planetary Sciences, Univ of Tennessee, Knoxville, TN 37996 and MERSCHAT, Arthur J., Earth and Planetary Sciences, Univ of Tennessee, 306 Earth and Planetary Sciences Bldg, University of Tennessee, Knoxville, TN 37996-1410, arthurmerschat@hotmail.com
231-114:15 PM BREAK-BACK KINEMATIC DEFORMATION PLAN, BESSEMER TRANSVERSE ZONE, ALLEGHANIAN THRUST BELT IN ALABAMA: BREWER, Margaret C., LaPorta and Associates, L.L. C., Geol Consultants, 116 Bellvale Lakes Road, Warwick, NY 10990, mbrewer@laportageol.com and THOMAS, William A., Department of Geological Sciences, Univ of Kentucky, 101 Slone Bldg, Lexington, KY 40506-0053
231-124:30 PM MULTIPLE DEFORMATION ASSOCIATED WITH TACONIC THRUST SHEETS IN THE GREAT VALLEY OF VIRGINIA: DUNCAN, Ian J.1, CAMPBELL, Elizabeth V.2, and WILLIAMS, Scott2, (1) Texas Bureau of Economic Geology, Univ of Texas, University Staion Box X, Austin, TX 78713, ian.duncan@beg.utexas.edu, (2) DMR, 900 Natural Resources Dr, Charlottesville, VA 22903
231-134:45 PM CRUSTAL CONSTITUENCY OF THE ALLEGHANIAN OROGEN AS REFLECTED BY RADIOMETRIC SEDIMENTARY PROVENANCE PROXIES: BECKER, Thomas1, THOMAS, William1, GEHRELS, George2, and ARONSON, James L.3, (1) Department of Geological Sciences, Univ of Kentucky, 101 Slone Bldg, Lexington, KY 40506-0053, tpbeck2@uky.edu, (2) Geosciences, Univ of Arizona, Tucson, AZ 85721, (3) Department of Earth Sciences, Dartmouth College, Hanover, NH 03755
231-145:00 PM PALEOPROTEROZOIC KINEMATICS AND GEOCHRONOLOGY OF A CRYSTALLINE BASEMENT COMPLEX IN THE NOPAH RANGE, TECOPA PASS, CALIFORNIA: BARLEY, B.J., SCHNEIDER, D.A., and NANCE, R.D., Geological Sciences, Ohio Univ, Clippinger Laboratory 316, Athens, OH 45701, bb127000@ohio.edu

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