2004 Denver Annual Meeting (November 7–10, 2004)
Session No. 231 Wednesday, November 10, 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, Geological Sciences, UC, Santa Barbara, Department of Geological Sciences, UC Santa Barbara—Building 526, Santa Barbara, CA 93106-9630, akylander@umail.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, bobmap@utk.edu 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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