T180 Rifting, Drifting, and Accretion of Microcontinental Terranes: A Recipe for Accretionary Orogens

Monday, 28 October 2013
1:00 PM - 5:00 PM
Room 504

Presentations

• 1:10 PM
  MICROPLATES AND EXOTIC, DISPLACED TERRANES: CONTRIBUTIONS FROM PALEOMAGNETISM
  Rob Van der Voo, University of Michigan, Ann Arbor, MI
  222561 (Technical Sessions)
• 1:30 PM
  THE ROLE AND SIGNIFICANCE OF RIBBON CONTINENTS IN ACCRETIONARY OROGENS AND THE SUPERCONTINENT CYCLE
  Stephen T. Johnston, University of Victoria, Victoria, BC
  228138 (Technical Sessions)
• 1:50 PM
  BIRCHY COMPLEX, BAIE VERTE PENINSULA, NORTHWEST NEWFOUNDLAND: A PRODUCT OF LATE EDIACARAN HYPER-EXTENSION OF THE LAURENTIAN IAPETAN MARGIN AND IMPLICATIONS FOR THE OPENING OF IAPETUS AND FORMATION OF PERI-LAURENTIAN MICRO-CONTINENTS
  Cees van Staal, Geological Survey of Canada, Vancouver, BC and David M. Chew, Trinity College, Dublin, N/A and Alexandre Zagorevski, Geological Survey of Canada, Ottawa, ON and Vicki McNicoll, Geological Survey of Canada, Ottawa, ON and James Hibbard, North Carolina State U, Raleigh, NC and Tom Skulski, Geological Survey of Canada, Ottawa, ON and Sébastien Castonguay, Geological Survey of Canada, Québec, QC and Monica Escayola, University of Buenos Aires, Buenos Aires, N/A and P.J. Sylvester, Memorial University of Newfoundland, St John's, NF
  223237 (Technical Sessions)
• 2:05 PM
  THE ROLE OF RIFT-INHERITED HYPEREXTENSION FOR THE FORMATION OF COLLISIONAL OROGENS: INSIGHTS FROM THE ALPS (WESTERN EUROPE)
  Geoffroy Mohn, Université Cergy-Pontoise, Neuville-sur-Oise, N/A and Gianreto Manatschal, Université de Strasbourg, Strasbourg, N/A and Marco Beltrando, Università di Torino, Torino, N/A and Isabelle Haupert, Université de Strasbourg, Strasbourg, N/A
  226788 (Technical Sessions)
• 2:25 PM
  EVIDENCE FOR RIFTING AND ACCRETION OF THE ARGENTINE PRECORDILLERA MICROCONTINENTAL TERRANE
  William A. Thomas, Geological Survey of Alabama, Tuscaloosa, AL and Ricardo A. Astini, Laboratorio de Análisis de Cuencas- Universidad Nacional de Córdoba, Córdoba
  232368 (Technical Sessions)
• 2:40 PM
  GANDERIA-LAURENTIA COLLISION IN THE CALEDONIDES OF GREAT BRITAIN AND IRELAND
  John Waldron, University of Alberta, Edmonton, AB and David I. Schofield, British Geological Survey, Edinburgh and S. Andrew DuFrane, University of Alberta, Edmonton, AB and James D. Floyd, Heriot-Watt University, Edinburgh, N/A and Quentin C. Crowley, Dublin and Antonio Simonetti, University of Notre Dame, Notre Dame, IN and Robert Dokken, University of Alberta, Edmonton, AB and Hayley Pothier, University of Alberta, Edmonton, AB
  232062 (Technical Sessions)
• 2:55 PM
  ACCRETION TECTONICS AND ASSEMBLY OF THE COMPOSITE PERI-GONDWANAN CONTINENTAL MARGIN IN THE UK
  David I. Schofield, British Geological Survey, Edinburgh and Graham Leslie, British Geological Survey, Edinburgh, N/A and Philip R. Wilby, British Geological Survey, Nottingham, N/A and Rosemary Dartnall, University of Birmingham, N/A and John Waldron, University of Alberta, Edmonton, AB and Hayley Pothier, University of Alberta, Edmonton, AB
  220541 (Technical Sessions)
• 3:25 PM
  USE OF TH/U RATIOS TO ELUCIDATE TERRANE AFFINITY AND TIMING OF ORDOVICIAN UNROOFING OF SEDIMENT SOURCES TO THE SOUTH OF THE SOUTH MAYO TROUGH, WESTERN IRELAND
  Nancy Riggs, School of Earth Sciences and Environmental Sustainability, Flagstaff, AZ and Brian McConnell, Dublin, N/A and Quentin C. Crowley, Dublin and David M. Chew, Trinity College, Dublin, N/A
  229678 (Technical Sessions)
• 3:40 PM
  WESTWARD SUBDUCTION OF NORTH AMERICA DURING THE SEVIER EVENT
  Robert S. Hildebrand, University of California, Davis, CA
  222069 (Technical Sessions)
• 3:55 PM
  CRUSTAL GROWTH BY TECTONIC ACCRETION OF ISLAND ARC TERRANES: RADIOISOTOPIC PROVENANCE OF LATE PALEOZOIC–MESOZOIC ROCKS OF THE BLUE MOUNTAINS, WESTERN UNITED STATES
  Todd LaMaskin, University of North Carolina Wilmington, Wilmington, NC and Jeffrey Vervoort, Washington State University, Pullman, WA and Rebecca Dorsey, University of Oregon, Eugene, OR
  230732 (Technical Sessions)
• 4:10 PM
  INTERPRETING SUBDUCTION POLARITY FROM ECLOGITE-BEARING SLICES IN ACCRETIONARY OROGENS—A CAUTIONARY NOTE FROM THE YUKON–TANANA TERRANE
  Jane A. Gilotti, University of Iowa, Iowa City, IA and Bill McClelland, University of Iowa, Iowa City, IA and Meredith Petrie, University of Iowa, Iowa City, IA and Cees R. van Staal, Geological Survey of Canada, Vancouver, BC
  227246 (Technical Sessions)
• 4:25 PM
  EVOLUTION OF CORDILLERAN CONVERGENT MARGINS—IMPLICATIONS OF OFFSHORE OBSERVATIONS THAT ARC-TRENCH WIDENING OF THE ALASKA MARGIN WAS NOT CAUSED BY ACCRETIONARY ADDITIONS TO THE OUTER FOREARC
  David Scholl, University of Alaska Fairbanks and U.S. Geological Survey, Menlo Park, CA and Roland von Huene, U.S. Geological Survey, Menlo Park, CA
  224813 (Technical Sessions)
• 4:40 PM
  TRACKING MESOZOIC ACCRETIONARY DYNAMICS IN THE NORTHERN ANDES OF COLOMBIA THROUGH AR-AR DATING OF SHEAR ZONES AND (U-TH)/HE - FISSION TRACK THERMOCHRONOLOGY OF PLUTONIC MASSIFS (APATITE AND ZIRCON)
  Cesar Vinasco, Universidad Nacional de Colombia - Medellin, Medellin and Sergio Andrés Restrepo-Moreno, Escuela de Ingeniería de Antioquia, Envigado, N/A and Matthias Bernet, Université Joseph Fourier, Grenoble Cedex and Santiago Noriega, Universidad Nacional de Colombia, Medellin, N/A and Maria Isabel Marin-Ceron, Universidad EAFIT, Medellín
  234010 (Technical Sessions)