T71 Some like It HOT: The Role of Late Extensional Tectonics in Collisional Orogens, with Special Emphasis on the Grenville Orogen

Tuesday, 27 October 2020
1:30 PM - 5:30 PM
Meeting Rooms

Presentations

• 1:35 PM
  THICKENING, COLLAPSE, AND THE U-SHAPED MONAZITE PROFILE: IMPLICATIONS FOR THE TECTONIC HISTORY OF THE ADIRONDACK AND APPALACHIAN MOUNTAINS
  Michael L. Williams, University of Massachusetts, Amherst, MA and Michael Jercinovic, University of Massachusetts, Amherst, Amherst, MA and Ian W. Hillenbrand, University of Massachusetts, Amherst, Amherst, MA and Daniel Tjapkes, University of Massachusetts Amherst, Amherst, MA
  359174 (Technical Sessions)
• 1:50 PM
  IN-SITU MONAZITE GEOCHRONOLOGY OF THE CARTHAGE-COLTON SHEAR ZONE: NEW CONSTRAINTS ON MAGMATISM, METAMORPHISM, AND DEFORMATION ALONG A MAJOR TECTONIC BOUNDARY IN THE ADIRONDACKS
  Erkan Toraman, Salem State University, Salem, MA and Jeffrey R. Chiarenzelli, St. Lawrence University, Canton, NY and Michael L. Williams, University of Massachusetts, Amherst, Amherst, MA and M.J. Jercinovic, University of Massachusetts, Amherst, Amherst, MA
  357995 (Technical Sessions)
• 2:05 PM
  DEFORMATION OF THE SOUTHERN CARTHAGE-COLTON MYLONITE ZONE AND ITS POTENTIAL ROLES IN COMPRESSIONAL AND EXTENSIONAL TECTONICS IN THE ADIRONDACK SEGMENT OF THE GRENVILLE PROVINCE, NORTHERN NEW YORK STATE
  Graham B. Baird, University of Northern Colorado, Greeley, CO
  350906 (Technical Sessions)
• 2:20 PM
  GORE MOUNTAIN GARNET AMPHIBOLITE RECORDS UHT CONDITIONS: IMPLICATIONS FOR THE RHEOLOGY OF THE LOWER CONTINENTAL CRUST DURING OROGENESIS
  William Shinevar, Massachusetts Institute of Technology, Cambridge, MA and Oliver Jagoutz, Massachusetts Institute of Technology, Cambridge, MA and Jill VanTongeren, Tufts University, Medford, MA
  352783 (Technical Sessions)
• 2:45 PM
  SLOW COOLING OF HOT ROCKS IN LARGE GRENVILLIAN METAMORPHIC CORE COMPLEXES, AND THE THERMAL SIGNATURE OF THE OTTAWAN OROGENIC LID
  Toby Rivers, Memorial University, St, John's, NF and Richard A. Volkert, Trenton, NJ
  355226 (Technical Sessions)
• 3:00 PM
  THE ROLE OF TRANSVERSE BASEMENT STRUCTURES AND OBLIQUE TERRANE BOUNDARIES ON THE ARCHITECTURE OF LARGE-HOT LONG OROGENS - EXAMPLES FROM THE HIMALAYA-TIBET AND GRENVILLE OROGENS
  Renaud Soucy La Roche, Institut national de la recherche scientifique, Québec, QC and Laurent Godin, Kingston, ON and Lyal Harris, Institut national de la recherche scientifique, Québec, QC and Aurélie Gicquel, Institut national de la recherche scientifique, Québec, QC
  355816 (Technical Sessions)
• 3:15 PM
  THE ROLE OF EXTENSION IN DEVELOPMENT OF OROGENIC GEOTHERMS: HOT OROGENS MAY NOT BE SO HOT
  Donna Whitney, University of Minnesota-Twin Cities, Minneapolis, MN and Christian Teyssier, University of Minnesota, Minneapolis, MN
  355892 (Technical Sessions)
• 3:30 PM
  DETERMINING THE PETROTECTONIC EVOLUTION OF LEDGE MOUNTAIN MIGMATITES WITH PHASE EQUILIBRIA MODELING AND MELT REINTEGRATION: ADIRONDACK HIGHLANDS, NEW YORK
  Michael Davis, San Francisco State University, San Francisco, CA and Mary Leech, San Francisco State University, San Francisco and Ellen Metzger, San Jose, CA
  358255 (Technical Sessions)
• 3:55 PM
  PRELIMINARY MAPPING RESULTS FROM THE PORT HENRY QUADRANGLE, ADIRONDACK MOUNTAINS, NEW YORK
  Peter Valley, USGS Florence Bascom Geoscience Center, Reston, VA
  358110 (Technical Sessions)
• 4:10 PM
  ND ISOTOPE MAPPING A TECTONIC WINDOW IN THE CHALK RIVER AREA: IMPLICATIONS FOR GRENVILLIAN TECTONICS
  A.P. Dickin, McMaster University, Hamilton, ON and L. Krivankova-Smal, McMaster University, Hamilton, ON and Jacob Strong, Monash University, Clayton, VIC and M. Swing, University of Toronto, Toronto, ON
  350712 (Technical Sessions)
• 4:25 PM
  THERMAL EVOLUTION OF THE SCANDIAN OROGENIC RETROWEDGE, NORTHERN SCOTLAND: TECTONIC IMPLICATIONS OF RAPID COLLAPSE
  Brandon M. Spencer, University of Kentucky, Lexington, KY and James Thigpen, University of Kentucky, Lexington, KY and Richard D. Law, Virginia Tech, Blacksburg, VA and K.V. Hodges, Arizona State University, Tempe, AZ and Sean Gallen, Colorado State University, Fort Collins, CO and Jason Dortch, University of Kentucky, Lexington, KY and Calvin A. Mako, Bates College, Lewiston, ME
  356750 (Technical Sessions)
• 4:45 PM
  RETROGRESSED BANDED GNEISSES AS INDICATORS OF INVERTED DUCTILE THRUSTS, WESTERN OTTAWA RIVER GNEISS COMPLEX, GRENVILLE PROVINCE OF ONTARIO
  Joy Carter, Toronto, ON and Darrel Kwong, University of Toronto, Toronto, ON and Sofia Panasiuk, University of Toronto, Toronto, ON and Toby Rivers, Memorial University, St, John's, NF and Walfried Schwerdtner, University of Toronto, Toronto, ON
  352187 (Technical Sessions)
• 4:55 PM
  MAJOR LENTICULAR STRUCTURES IN THE OTTAWA RIVER GNEISS COMPLEX, SW GRENVILLE PROVINCE: MEGABOUDINS FORMED DURING 2-STAGE DUCTILE OROGENIC COLLAPSE
  Walfried Schwerdtner, West Hill, ON and Toby Rivers, Memorial University, St, John's, NF and Joy Carter, Toronto, ON
  352984 (Technical Sessions)
• 5:05 PM
  MAGNETITE-APATITE MINERALIZATION IN A GRENVILLE INLIER: TEMPORAL CONSTRAINTS ON REGIONAL METAMORPHISM AND METASOMATISM
  Alyssa McKanna, Princeton University Geosciences, Princeton, NJ and Blair Schoene, Princeton University, Princeton, NJ and Richard Volkert, Trenton, NJ and Lauren Lewis, Princeton University, Princeton, NJ
  357316 (Technical Sessions)
• 5:15 PM
  A TRANSECT ACROSS THE NORTHERN MARGIN OF THE MARCY MASSIF, COPPER KILN LANDSLIDE, ADIRONDACK MOUNTAINS, NEW YORK, USA
  Nancy A. Price, State University of New York at Plattsburgh, Plattsburgh, NY and Jarret William Pidgeon, State University of New York at Plattsburgh, Plattsburgh, NY
  359447 (Technical Sessions)