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2007 GSA Denver Annual Meeting (28–31 October 2007)

Session No. 77
Monday, 29 October 2007: 8:00 AM-12:00 PM

T115. The Blue Mountains Region of Oregon, Idaho, and Washington: Recent Advances in the Mesozoic and Cenozoic History of an Enigmatic Accretionary Province I

GSA Sedimentary Geology Division; GSA Structural Geology and Tectonics Division

 

Todd LaMaskin, Joshua Schwartz and Victor Camp, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:15 AM
PALEOMAGNETISM OF MESOZOIC-CENOZOIC ROCKS OF THE BLUE MOUNTAINS, OREGON
HOUSEN, Bernard A., Geology Department, Western Washington University, 516 High St, Bellingham, WA 98225-9080, bernieh@wwu.edu, bernieh@wwu.edu
2
8:35 AM
RADIOGENIC ISOTOPIC CHARACTERISTICS OF INTRUSIVE ROCKS OF THE COUGAR CREEK COMPLEX, BLUE MOUNTAINS PROVINCE, NORTHEASTERN OREGON AND WEST-CENTRAL IDAHO: IMPLICATIONS FOR THE PALEOGEOGRAPHY AND TECTONIC EVOLUTION OF THE WALLOWA TERRANE
KURZ, Gene Alan, SCHMITZ, Mark D. and NORTHRUP, Clyde J., Department of Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725, genekurz@u.boisestate.edu, genekurz@u.boisestate.edu
3
8:50 AM
STRUCTURAL CHARACTER OF THE WALLOWA-BAKER TERRANE BOUNDARY: IMPLICATIONS FOR THE TECTONIC EVOLUTION OF THE BLUE MOUNTAINS PROVINCE, NORTHEAST OREGON
SCHWARTZ, Joshua J. and SNOKE, Arthur W., Geology and Geophysics, Univ. of Wyoming, Dept. 3006, 1000 E. University Ave, Laramie, WY 82071, joshua.j.schwartz@gmail.com, joshua.j.schwartz@gmail.com
4
9:05 AM
INSIGHTS INTO THE MESOZOIC TECTONIC HISTORY OF THE BLUE MOUNTAINS PROVINCE, EASTERN OREGON, FROM INITIAL RESULTS OF DETRITAL ZIRCON DATING
LAMASKIN, Todd, Dept. of Geological Sciences, University of Oregon, 1272 University of Oregon, Eugene, OR 97403, DORSEY, Rebecca, Geological Sciences, Univ of Oregon, 1272 University of Oregon, Eugene, OR 97403-1272 and VERVOORT, Jeffrey D., Department of Geology, Washington State University, Pullman, WA 99164, tlamaski@uoregon.edu, tlamaski@uoregon.edu
5
9:20 AM
COLLISIONAL-BASIN ORIGIN FOR JURASSIC MARINE DEPOSITS IN THE BLUE MOUNTAINS PROVINCE, NORTHEASTERN OREGON
DORSEY, Rebecca J., Dept. of Geological Sciences, 1272 University of Oregon, Eugene, OR 97403-1272 and LAMASKIN, Todd, Dept. of Geological Sciences, University of Oregon, 1272 University of Oregon, Eugene, OR 97403, rdorsey@uoregon.edu, rdorsey@uoregon.edu
 
9:35 AM
Break
6
9:50 AM
CRYSTALLOGRAPHIC FABRICS OF THE MARTIN BRIDGE LIMESTONE, WALLOWA MOUNTAINS: AN ELECTRON-BACKSCATTERED DIFFRACTION STUDY
CROWLEY, Peter D., Dept. of Geology, Amherst College, Amherst, MA 01002, pdcrowley@amherst.edu, pdcrowley@amherst.edu
7
10:05 AM
EARLY MESOZOIC WALLOWA TERRANE, NORTHEASTERN OREGON AND ADJACENT IDAHO
STANLEY Jr, George D., Geosciences, The University of Montana, Missoula, MT 59812, george.stanley@umontana.edu, george.stanley@umontana.edu
8
10:20 AM
PENNSYLVANIAN TO EARLY JURASSIC FAUNAS FROM INLIERS OF OPHIOLITIC MELANGE LINK THE BAKER AND OLDS FERRY TERRANES OF EAST-CENTRAL OREGON
BLOME, Charles D., U.S. Geological Survey, MS 980, Denver, CO 80225 and NESTELL, Merlynd K., Dept. of Earth and Environmental Sciences, Univ. of Texas at Arlington, Arlington, TX 76019-0049, cblome@usgs.gov, cblome@usgs.gov
9
10:35 AM
SPATIAL AND TEMPORAL LINKS BETWEEN MINERALIZATION AND THE FORMATION, AMALGAMATION, AND DISRUPTION OF ACCRETED TERRANES IN THE BLUE MOUNTAINS OF OREGON
FERNS, M.L., Eastern Oregon Field Office, Oregon Department of Geology and Mineral Industries, 1510 Campbell St, Baker City, OR 97814, mark.ferns@dogami.state.or.us, mark.ferns@dogami.state.or.us
10
10:55 AM
PETROLOGY OF THE LATE JURASSIC SUNRISE BUTTE PLUTON, EASTERN OREGON: A RECORD OF RENEWED MESOZOIC ARC ACTIVITY?
JOHNSON, Kenneth, Department of Natural Sciences, University of Houston-Downtown, 1 Main Street, Suite N813, Houston, TX 77002, SCHWARTZ, Joshua J., Geology and Geophysics, Univ. of Wyoming, Dept. 3006, 1000 E. University Ave, Laramie, WY 82071 and WALTON, Clay, Department of Geosciences, Texas Tech University, Lubbock, TX 79409, johnsonk@uhd.edu, johnsonk@uhd.edu
11
11:10 AM
Withdrawn
 
11:25 AM
Discussion
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