13 Crustal Cross Sections from the Western North America Cordillera and Elsewhere—Implications for Tectonic and Petrologic Processes

Friday, 29 April 2005
1:10 PM - 5:00 PM

Presentations

• 1:20 PM
  CRUSTAL EVOLUTION DURING THE LAST 105 MILLION YEARS, CENTRAL COAST OROGEN, BC AND SOUTHEASTERN ALASKA
  Maria Luisa Crawford, Bryn Mawr College, Bryn Mawr, PA
  85324 (THEME SESSIONS)
• 1:40 PM
  IMPLICATIONS FOR TECTONIC AND MAGMATIC PROCESSES FROM THE ~5 TO 40 KM NORTH CASCADES CRUSTAL SECTION, WASHINGTON
  Jennifer Matzel, Berkeley Geochronology Ctr, Berkeley, CA and Robert Miller, San Jose State Univ, San Jose, CA and Scott Paterson, Univ of Southern California, Los Angeles, CA and Samuel A. Bowring, Massachusetts Institute of Technology, Cambridge, MA
  85830 (THEME SESSIONS)
• 2:00 PM
  SALINIA: A CRUSTAL CROSS SECTION THROUGH A SHALLOW SUBDUCTION ZONE EXPOSING THE SUBDUCTION MEGATHRUST
  Mihai N. Ducea, Univ of Arizona, Tucson, AZ and Steven Kidder, Univ of Arizona, Tucson, AZ and John Chesley, Univ of Arizona, Tucson, AZ
  85206 (THEME SESSIONS)
• 2:20 PM
  USING 40AR/39AR THERMOCHRONOLOGY TO ASSESS THE TILTING AND EXHUMATION OF CONTINENTAL CRUSTAL SECTIONS: AN EXAMPLE FROM THE SIERRA MAZATAN CORE COMPLEX, SONORA, MEXICO
  Martin Wong, UC Santa Barbara, Santa Barbara, CA and Phillip Gans, Univ of California, Santa Barbara, Santa Barbara, CA
  85810 (THEME SESSIONS)
• 2:40 PM
  LINKING DEEP AND SHALLOW CRUSTAL PROCESSES IN EXTENDING CONTINENTAL CRUST: EXAMPLES FROM THE CENOZOIC BASIN AND RANGE AND THE CRETACEOUS OF THE BERING STRAIT
  Elizabeth Miller, Stanford Univ, Stanford, CA and Vyacheslav V. Akinin, NEISRI, Magadan
  85574 (THEME SESSIONS)
• 3:20 PM
  INVESTIGATING DEEP AND MIDDLE CRUSTAL PROCESSES IN ISOBARICALLY COOLED TERRANES: THE EAST ATHABASCA AREA OF CANADA AND THE PROTEROZOIC TERRANE OF SW-USA
  Michael L. Williams, Univ of Massachusetts, Amherst, MA and Kevin Mahan, Univ of Massachusetts, Amherst, MA and Greg Dumond, UMASS, Amherst, MA and Michael Jercinovic, Univ of Massachusetts, Amherst, MA and Karl Karlstrom, Univ of New Mexico, Albuquerque, NM and S.A. Bowring, Massachusetts Institute of Technology, Cambridge, MA
  85760 (THEME SESSIONS)
• 3:40 PM
  A P-T-TIME-DEFORMATION PATH FOR EXPOSED DEEP CONTINENTAL CRUST IN THE SNOWBIRD TECTONIC ZONE, WESTERN CANADIAN SHIELD
  Kevin H. Mahan, Univ of Massachusetts, Amherst, MA and Rebecca M. Flowers, Massachusetts Institute of Technology, Cambridge, MA and Michael L. Williams, Univ of Massachusetts, Amherst, MA and Philippe Goncalves, Université de Franche-Comté, Besançon, N/A and Samuel A. Bowring, Massachusetts Institute of Technology, Cambridge, MA and Michael J. Jercinovic, Univ of Massachusetts, Amherst, MA
  85758 (THEME SESSIONS)
• 4:00 PM
  DUCTILE FLOW IN A THERMALLY-EVOLVING LOWER CRUST AND ITS RELATIONSHIP TO DEFORMATION IN THE MIDDLE AND UPPER CRUST OF A CORDILLERAN-STYLE MAGMATIC ARC IN WESTERN NEW ZEALAND
  Keith A. Klepeis, Univ of Vermont, Burlington, VT and Daniel King, Univ of Vermont, Burlington, VT and George Gehrels, Univ of Arizona, Tucson, AZ and Arthur Goldstein, Colgate Univ, Hamilton, NY and Geoff Clarke, Univ of Sydney, Sydney, N/A
  85580 (THEME SESSIONS)
• 4:20 PM
  A STRUCTURAL TRANSECT ACROSS THE IVREA-VERBANO ZONE NEAR VARALLO SESIA, NORTHERN ITALY
  Arthur W. Snoke, Univ of Wyoming, Laramie, WY and Thomas J. Kalakay, Rocky Mountain College, Billings, MT
  85769 (THEME SESSIONS)
• 4:40 PM
  THE ROLE OF PRE-EXISTING ANISOTROPIES AND PARTIAL MELT IN CONTROLLING STRAIN LOCALIZATION IN A PALEOZOIC LOWER CRUSTAL SUTURE ZONE, SIERRAS PAMPEANAS, WEST-CENTRAL ARGENTINA
  Sean R. Mulcahy, Univ of California, Davis, Davis, CA and Sarah M. Roeske, Univ of California, Davis, Davis, CA and William C. McClelland, Univ of Idaho, Moscow, ID and Joshua R. Ellis, Univ of Idaho, Moscow, ID and Sebastien Nomade, Berkeley Geochronology Ctr, Berkeley, CA and Graciela I. Vujovich, Univ of Buenos Aires-CONICET, Buenos Aires, N/A
  85702 (THEME SESSIONS)