T100 Late Cretaceous–Eocene (pre-Cascadia) Tectonics from the Greater Pacific Northwest Margin to the Rocky Mountains

Monday, 11 October 2021
1:30 PM - 5:30 PM
A106

Presentations

• 1:55 PM
  UPPER PLATE RESPONSE TO RIDGE-TRENCH INTERACTION AND OCEANIC PLATEAU ACCRETION, WASHINGTON CASCADES AND SURROUNDING REGION: IMPLICATIONS FOR PALEOGENE PLATE TECTONIC EVOLUTION OF THE PACIFIC NORTHWEST
  Robert Miller, San Jose State University, San Jose, CA and Paul Umhoefer, Northern Arizona University, Flagstaff, AZ and Michael Eddy, Purdue University, West Lafayette, IN and Jeffrey Tepper, University of Puget Sound, Tacoma, WA
  366942 (Technical Sessions)
• 2:10 PM
  METASEDIMENTARY ROCKS OF THE NORTH CASCADES CONTINENTAL MAGMATIC ARC: IMPORTANT TRACKERS OF THE RHEOLOGIC HISTORY OF AN ARC SYSTEM
  Stacia M. Gordon, University of Nevada, Reno, Reno, NV and Ann Hanson, University of Nevada, Reno, Reno, NV and Kirsten B. Sauer, Los Alamos National Laboratory, Los Alamos, NM and Robert B. Miller, San Jose State University, San Jose, CA
  365514 (Technical Sessions)
• 2:25 PM
  THE STRUCTURAL AND DEPOSITIONAL EVOLUTION OF PULL-APART BASINS: AN EXAMPLE FROM THE EOCENE CHUMSTICK BASIN, CENTRAL WASHINGTON
  Erin Donaghy, Purdue University, West Lafayette, IN and Paul Umhoefer, Northern Arizona University, Flagstaff, AZ and Michael Eddy, Purdue University, West Lafayette, IN and Robert B. Miller, San Jose State University, San Jose, CA
  367476 (Technical Sessions)
• 2:40 PM
  MAKING THE COLUMBIA EMBAYMENT WITH OBLIQUE FLAT-SLAB SUBDUCTION
  Eugene Humphreys, University of Oregon, Eugene, OR and Paul Umhoefer, Northern Arizona University, Flagstaff, AZ and Robert B. Miller, San Jose State University, San Jose, CA
  368730 (Technical Sessions)
• 3:00 PM
  REEVALUATION OF THE THICK EOCENE-AGE COLUMBIA BASIN, SOUTH CENTRAL WASHINGTON – N OREGON, BASED ON A SYNTHESIS OF GEOLOGICAL AND GEOPHYSICAL DATA
  Paul Umhoefer, Northern Arizona University, Flagstaff, AZ and Eugene Humphreys, University of Oregon, Eugene, Eugene, OR and Robert B. Miller, San Jose State University, San Jose, CA
  370543 (Technical Sessions)
• 3:30 PM
  MIGRATING EOCENE MAGMATISM AND TECTONISM ACROSS THE PACIFIC NORTHWEST: SLAB ROLLBACK, SLAB WINDOW, OR BOTH?
  Jeffrey Tepper, University of Puget Sound, Tacoma, WA and Robert B. Miller, San Jose State University, San Jose, CA
  367550 (Technical Sessions)
• 3:45 PM
  TRIPLE OXYGEN ISOTOPE PALEOALTIMETRY OF METAMORPHIC CORE COMPLEXES
  Katharina Methner, Stanford University, Stanford, CA and Daniel Ibarra, Brown University, Providence, RI and Andreas Mulch, Goethe University Frankfurt, Frankfurt and C. Page Chamberlain, Stanford University, Stanford, CA
  370573 (Technical Sessions)
• 4:00 PM
  PROFILE OF A PALEOGENE ANDES IN THE NORTH AMERICAN WEST
  Elizabeth Cassel, University of Idaho, Moscow, ID and Michael Smith, Northern Arizona University, Flagstaff, AZ and Erin Young-Dahl, University of Idaho, Moscow, ID and Daniel O. Breecker, The University of Texas at Austin, Austin, TX
  368996 (Technical Sessions)
• 4:15 PM
  LATE CRETACEOUS OROGENESIS ACROSS THE IDAHO BATHOLITH OF NORTH-CENTRAL IDAHO
  Keegan Schmidt, Lewis-Clark State College, Lewiston, ID and Russell Di Fiori, University of Idaho, Moscow, ID and Reed S. Lewis, University of Idaho, Moscow, ID
  370684 (Technical Sessions)
• 4:30 PM
  AGE, GEOCHEMISTRY AND SOURCE OF THE PIONEER INTRUSIVE SUITE; PIONEER METAMORPHIC CORE COMPLEX SOUTH-CENTRAL IDAHO
  Laura Mulrooney, University of Florida, Gainesville, FL and James Vogl, University of Florida, Gainesville, FL and David A. Foster, University of Florida, Gainesville, FL
  364314 (Technical Sessions)
• 4:45 PM
  DEVELOPMENT OF AN OROGENIC PLATEAU DURING MID-CRUSTAL FLOW IN THE CORDILLERAN HINTERLAND: EVIDENCE FROM FOOTWALL ROCKS OF THE ANACONDA METAMORPHIC CORE COMPLEX OF WESTERN MONTANA
  Thomas Kalakay, Rocky Mountain College, Billings, MT and Jeff Lonn, Montana Bureau of Mines and Geology, Butte, MT and David A. Foster, University of Florida, Gainesville, FL
  367357 (Technical Sessions)
• 5:00 PM
  THE LARAMIDE OROGENY: MODERN UNDERSTANDING OF THE STRUCTURAL STYLE, TIMING, AND SPATIAL DISTRIBUTION OF A CLASSIC FORELAND THICK-SKINNED TECTONIC SYSTEM
  Arlo Weil, Bryn Mawr College, Bryn Mawr, PA and Adolph Yonkee, Weber State University, Ogden, UT
  370183 (Technical Sessions)