7 New Developments in Understanding Cretaceous Crustal Structure in the North Cascades of Washington

Friday, 4 May 2007
1:00 PM - 5:30 PM

Presentations

• 1:05 PM
  PLUTONISM AT DIFFERENT CRUSTAL LEVELS OF ARCS: INSIGHTS FROM THE ~5-40 KM (PALEODEPTH) NORTH CASCADES CRUSTAL SECTION, WASHINGTON
  Robert B. Miller, San Jose State University, San Jose, CA and Jennifer Matzel, Berkeley Geochronology Ctr, Berkeley, CA and Scott R. Paterson, University of Southern California, Los Angeles, CA
  121250 (THEME SESSIONS)
• 1:25 PM
  PHASE EQUILIBRIA MODELING, PSEUDOMORPHS, AND CRUSTAL LOADING ALONG THE NORTHEAST MARGIN OF THE MOUNT STUART BATHOLITH, NORTH CASCADES, WA
  Doug Tinkham, Laurentian University, Sudbury, ON and Gerrit Bulman, CH2M Hill, Deerfield Beach, FL and Harold Stowell, Univ of Alabama, Tuscaloosa, AL and Carlos Zuluaga, Universidad Nacional de Colombia, Bogota, N/A
  121230 (THEME SESSIONS)
• 1:45 PM
  TIMING AND P-T CONDITIONS FOR PARTIAL MELTING AND INTRUSION IN THE NASON RIDGE MIGMATITIC GNEISS: NORTH CASCADES, WA
  Harold Stowell, Univ of Alabama, Tuscaloosa, AL and Doug Tinkham, Laurentian University, Sudbury, N/A and Carlos Zuluaga, Universidad Nacional de Colombia, Bogota, N/A and Gerrit Bulman, CH2M Hill, Deerfield Beach, FL
  120773 (THEME SESSIONS)
• 2:05 PM
  GARNETS AND ZIRCONS AGREE: GEOCHRONOLOGIC CONSTRAINTS ON LATE CRETACEOUS LOADING AND METAMORPHISM IN THE CASCADES CORE, WA
  Gerrit R. Bulman, CH2M Hill, Deerfield Beach, FL and Harold Stowell, Univ of Alabama, Tuscaloosa, AL and Doug Tinkham, Laurentian University, Sudbury, N/A and Carlos Zuluaga, Universidad Nacional de Colombia, Bogota, N/A
  120815 (THEME SESSIONS)
• 2:45 PM
  METAMORPHIC EVOLUTION OF THE WENATCHEE BLOCK, SUIATTLE RIVER REGION, NORTH CASCADES, WASHINGTON
  Robert G. Isaacson, Western Washington University, Bellingham, WA and David M. Hirsch, Western Washington University, Bellingham, WA
  120700 (THEME SESSIONS)
• 3:05 PM
  ORIGIN OF CORONA TEXTURES IN DIKES NEAR THE MT. STUART BATHOLITH, NORTH CASCADES, WA, USA: X-RAY TOMOGRAPHY AND PSEUDOSECTION MODELING
  Ellen Stein, Univ of Alabama, Tuscaloosa, AL and Harold H. Stowell, Univ of Alabama, Tuscaloosa, AL and Richard Ketcham, University of Texas at Austin, Austin, TX
  121003 (THEME SESSIONS)
• 3:25 PM
  INVERTED REGIONAL METAMORPHISM IN THE COAXIALLY REFOLDED TONGA FORMATION: EVIDENCE FOR MESOZOIC ACCRETIONAL TECTONICS IN THE CASCADES CRYSTALLINE CORE
  Luke A. Jensen, University of Southern California, Los Angeles, CA and Hermann Lebit, University of New Orleans, New Orleans, LA and Scott Paterson, University of Southern California, Los Angeles, CA and Robert Miller, San Jose State Univ, San Jose, CA and Ron H. Vernon, Macquarie University, Sydney
  121333 (THEME SESSIONS)
• 3:45 PM
  KINEMATIC ANALYSIS OF A CRETACEOUS THRUST ZONE, CASCADE CRYSTALLINE CORE, WASHINGTON
  Gerald Griesel, Western Washington University, Bellingham, WA and Elizabeth Schermer, Western Washington University, Bellingham, WA
  120910 (THEME SESSIONS)
• 4:05 PM
  EVIDENCE FOR NORTHWEST-DIRECTED H2O-RICH SYNMETAMORPHIC FLUID FLOW, NW CASCADE CORE, WA
  Benjamin T. Henderson, Western Washington University, Reardan, WA and David M. Hirsch, Western Washington University, Bellingham, WA
  121012 (THEME SESSIONS)