2004 Denver Annual Meeting (November 7–10, 2004)

Session No. 231
Wednesday, 10 November 2004: 1:30 PM-5:30 PM

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

 

D.A. Schneider and Charles W. Carrigan, Chairs
Paper #
Start Time
1
1:30 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, (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, hacker@geol.ucsb.edu, hacker@geol.ucsb.edu
2
1:45 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, 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, kylander@geol.ucsb.edu, kylander@geol.ucsb.edu
3
2:00 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, 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, johnston@umail.ucsb.edu, johnston@umail.ucsb.edu
4
2:15 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, davey@umail.ucsb.edu
5
2:30 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 and NATAL'IN, Boris A., Istanbul Technical Univ, Ayazaga, Istanbul, 80626, Turkey, sengor@itu.edu.tr, sengor@itu.edu.tr
6
2:45 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 and MAZZOLI, Stefano, Istituto di Dinamica Ambientale, Universita di Urbino, Urbino, 61029, Italy, stj@uvic.ca, stj@uvic.ca
7
3:00 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, 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, cwcarrig@umich.edu, cwcarrig@umich.edu
 
3:15 PM
Break
8
3:30 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 and HOLM, D.K., Geology, Kent State Univ, Kent, OH 44242, schneidd@ohio.edu, schneidd@ohio.edu
9
3:45 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, (2)Department of Geology, Kent State Univ, Kent, OH 44242, pp159000@ohio.edu, pp159000@ohio.edu
10
4:00 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, arthurmerschat@hotmail.com
11
4:15 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 and THOMAS, William A., Department of Geological Sciences, Univ of Kentucky, 101 Slone Bldg, Lexington, KY 40506-0053, mbrewer@laportageol.com, mbrewer@laportageol.com
12
4:30 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, (2)DMR, 900 Natural Resources Dr, Charlottesville, VA 22903, ian.duncan@beg.utexas.edu, ian.duncan@beg.utexas.edu
13
4:45 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, (2)Geosciences, Univ of Arizona, Tucson, AZ 85721, (3)Department of Earth Sciences, Dartmouth College, Hanover, NH 03755, tpbeck2@uky.edu, tpbeck2@uky.edu
14
5:00 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, bb127000@ohio.edu