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2004 Denver Annual Meeting (November 7–10, 2004)

Session No. 43
Sunday, 7 November 2004: 1:30 PM-5:30 PM

T84. Terrane Translation, Orogenesis, and Plate Interactions in the Late Mesozoic to Early Cenozoic North American Cordillera, and Implications for Paleogeographic Reconstructions

GSA Geophysics Division; GSA Structural Geology & Tectonics Division

 

Paul Umhoefer, Sandra Wyld and James E. Wright, Advocates
Paper #
Start Time
1
1:30 PM
TESTING ALTERNATIVE MODELS FOR THE LATE MESOZOIC PALEOGEOGRAPHY OF THE CORDILLERA
COWAN, Darrel S., Earth & Space Sciences, Univ of Washington, Box 351310, Seattle, WA 98195 and UMHOEFER, Paul, Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011, darrel@u.washington.edu, darrel@u.washington.edu
2
1:50 PM
RECONSTRUCTING NORTHERN CORDILLERAN TERRANES ALONG KNOWN CRETACEOUS AND CENOZOIC STRIKE-SLIP FAULTS: IMPLICATIONS FOR THE BAJA BC HYPOTHESIS AND OTHER MODELS
WYLD, Sandra1, UMHOEFER, Paul J.2 and WRIGHT, James E.1, (1)Geology, Univ of Georgia, Athens, GA 30602, (2)Department of Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011, swyld@gly.uga.edu, swyld@gly.uga.edu
3
2:10 PM
TOWARD A RESOLUTION OF THE BAJA BRITISH COLUMBIA (BAJA BC) DEBATE BY EMPHASIZING PLATE-SCALE RELATIONS AND THE TIMING OF TRANSLATION
UMHOEFER, Paul J., Department of Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011, paul.umhoefer@nau.edu, paul.umhoefer@nau.edu
4
2:30 PM
THE SOUTHERN SIERRA-SALINIA SUPRASUBDUCTION ZONE METAMORPHIC CORE COMPLEX, CALIFORNIA
SALEEBY, Jason, California Institute Technology, Pasadena, CA 91125-0001 and DUCEA, Mihai, Geosciences, Univ of Arizona, 1040 E Fourth Street, Tucson, AZ 85721, Jason@gps.caltech.edu, Jason@gps.caltech.edu
5
2:50 PM
REMOVAL OF MANTLE LITHOSPHERE, SYNCONVERGENT EXTENSION AND CRUSTAL ANATEXIS IN THE LATE CRETACEOUS CORDILLERAN INTERIOR
WELLS, Michael L.1, HOISCH, Thomas D.2, KULA, Joseph L.1 and BURGETT, Darren1, (1)Department of Geoscience, Univ of Nevada Las Vegas, Las Vegas, NV 89154-4010, (2)Geology, Northern Arizona Univ, Box 4099, Flagstaff, AZ 86011, mlwells@unlv.nevada.edu, mlwells@unlv.nevada.edu
6
3:05 PM
DEPOSITIONAL AGE AND PROVENANCE OF JADEITE-GRADE METAGRAYWACKE FROM THE FRANCISCAN ACCRETIONARY PRISM, DIABLO RANGE, CENTRAL CALIFORNIA - SHRIMP PB-ISOTOPE DATING OF DETRITAL ZIRCON
JOESTEN, Ray, Geology and Geophysics Program, Univ of Connecticut, 354 Mansfield Road U-2045, Storrs, CT 06269-2045, WOODEN, J.L., U.S.G.S, Menlo Park, CA 94025, SILVER, Leon T., California Institute Technology, 1201 E California Blvd MC 100-23, Pasadena, CA 91125-0001, ERNST, W.G., Stanford Univ, Bldg 320, Stanford, CA 94305-2115 and MCWILLIAMS, Michael O., Geological and Environmental Sciences, Stanford Univ, 450 Serra Mall, Stanford, CA 94305-2115, joesten@uconn.edu, joesten@uconn.edu
7
3:20 PM
DID THE GREAT VALLEY GROUP ACCUMULATE IN A TRANSLATIONAL RATHER THAN STATIONARY FORE ARC BASIN?
WRIGHT, James E., Geology, Univ of Georgia, Athens, GA 30602, jwright@gly.uga.edu, jwright@gly.uga.edu
 
3:35 PM
Discussion
8
3:45 PM
TESTS OF PLATE RECONSTRUCTIONS THAT ASSUME FIXED HOTSPOTS
GORDON, Richard G., ANDREWS, David and HORNER-JOHNSON, Benjamin C., Earth Science--MS 126, Rice Univ, PO Box 1892, Houston, TX 77251-1892, rgg@rice.edu, rgg@rice.edu
9
4:00 PM
PALEOMAGNETICS AND TECTONIC SIGNIFICANCE OF CRETACEOUS SEDIMENTARY ROCKS IN THE MITCHELL INLIER, BLUE MOUNTAINS, OREGON
HOUSEN, Bernard A., Geology Dept, Western Washington Univ, 516 High St, Bellingham, WA 98225-9080 and DORSEY, Rebecca J., Department of Geological Sciences, Univ of Oregon, Eugene, OR 97403-1272, bernieh@cc.wwu.edu, bernieh@cc.wwu.edu
10
4:15 PM
IMPLICATIONS OF LAMELLAR MAGNETISM FOR INTERPRETING ANOMALOUS MAGNETIC REMANENCE DIRECTIONS OF DEEP-SEATED PLUTONS
HOLLISTER, Lincoln S., Department of Geosciences, Princeton Univ, Princeton, NJ 08544, HARGRAVES, Robert B., Princeton Univ, Guyot Hall, Princeton, NJ 08544-1003, JAMES, Thomas S., Geological Survey of Canada, Pacific Geoscience Centre, Sidney, BC V8L 4B2, Canada and RENNE, Paul R., Berkeley Geochronology Ctr/UC Berkeley, 2455 Ridge Road, Berkeley, CA 94709, linc@princeton.edu, linc@princeton.edu
11
4:30 PM
TECTONICS OF LATE JURASSIC-EARLY CRETACEOUS BASIN DEVELOPMENT, NORTH-CENTRAL SONORA, MEXICO
LAWTON, Timothy F.1, GONZÁLEZ-LEÓN, Carlos M.2, MAUEL, David J.3, LEGGETT, William J.3, AMATO, Jeffrey M.1, IRIONDO, Alexander4 and GEHRELS, George E.5, (1)Department of Geological Sciences, New Mexico State Univ, Las Cruces, NM 88003, (2)Instituto de Geología, UNAM, Estación Regional del Noroeste, Apartado Postal 1039, Hermosillo, Sonora, 83000, Mexico, (3)Geological Sciences, New Mexico State University, Las Cruces, NM 88003, (4)Centro de Geociencias, Campus Juriquilla UNAM, Carretera San Luis Potosi km 13, Querétaro, Mexico, (5)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721-0077, tlawton@nmsu.edu, tlawton@nmsu.edu
12
4:45 PM
INHERITED PROTEROZOIC ZIRCON IMPLIES A PROXIMAL NORTH AMERICAN (?) PALEO- GEOGRAPHIC SETTING FOR JURASSIC OPHIOLITES, SIERRA NEVADA, CALIFORNIA
DAY, Howard W., Department of Geology, U. C. Davis, Davis, CA 95616 and BICKFORD, M.E., Department of Earth Sciences, Syracuse Univ, Syracuse, NY 13244, day@geology.ucdavis.edu, day@geology.ucdavis.edu
13
5:00 PM
THE JURASSIC TECTONIC DEVELOPMENT OF SOUTH-CENTRAL ALASKA
RIOUX, Matthew1, MATTINSON, James1, HACKER, Bradley1, BLUSZTAJN, Jurek2 and KELEMEN, Peter2, (1)Geological Sciences, Univ of California, Santa Barbara, CA 93106, (2)Department of Geology and Geophysics, Woods Hole Oceanographic Institute, Woods Hole, MA 02543, mrioux@umail.ucsb.edu, mrioux@umail.ucsb.edu
14
5:15 PM
COLLISION OF THE OLYUTORSKY TERRANE, KAMCHATKA
GARVER, John I., Geology Department, Union College, Union College, Olin Building, Schenectady, NY 12308-2311, HOURIGAN, Jeremy, Dept. of Geology and Geophysics, Yale Univ, P.O. Box 2008109, New Haven, CT 06520, SOLOVIEV, Alex, Institute of the Lithosphere of Marginal Seas, Russian Academy of Sciences Russian Academy of Sciences Russian Academy of Sciences Russian Academy of Sciences, Staromonetny per., 22, Moscow, 119180, Russia and BRANDON, Mark T., Department of Geology and Geophysics, Yale Univ, 210 Whitney Avenue, New Haven, CT 06520-8109, garverj@union.edu, garverj@union.edu
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