2007 GSA Denver Annual Meeting (28–31 October 2007)
Session No. 181 Tuesday, 30 October 2007
1:30 PM-5:30 PM, Colorado Convention Center: Exhibit Hall E/F

T84. Active and Ancient Tectonics along the Northern Cordillera Margin—Magmatism, Deformation, Metamorphism, and Basin Development (Posters) (GSA Structural Geology and Tectonics Division; Geophysics; Sedimentary Geology)

Authors will be present from 2:30 to 4:30 PM
 Paper #Booth #
181-1159DETRITAL ZIRCON U-PB ANALYSIS OF PRE-MISSISSIPPIAN METASEDIMENTARY BASEMENT STRATA, NORTH SLOPE, ALASKA: EVIDENCE OF A CALEDONIAN CONNECTION: MOORE, Thomas E., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, tmoore@usgs.gov, POTTER, Christopher J., U.S. Geological Survey, Mail Stop 939, Denver Federal Center, Denver, CO 80225-0046, and O'SULLIVAN, Paul B., Apatite to Zircon, Inc, 1075 Matson Rd, Viola, ID 83872-9709
181-2160GEOLOGIC SYNTHESIS OF THE METAMORPHIC CORE OF THE BROOKS RANGE OROGEN, ALASKA: TILL, Alison B., USGS, 4200 University Drive, Anchorage, AK 99508, atill@usgs.gov, DUMOULIN, J.A., U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508, HARRIS, Anita G., U.S. Geological Survey, Emeritus, Deerfield Beach, FL 33441, MOORE, Thomas E., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, and BLEICK, Heather A., USGS, 4200 University Dr, Anchorage, AK 99508
181-3161GEOCHEMICAL AND ND-PB ISOTOPIC EVOLUTION OF METABASITES FROM ATTENUATED CONTINENTAL LITHOSPHERE, NOME GROUP, SEWARD PENINSULA, ALASKA: AYUSO, Robert A., 954 National Center, U.S. Geological Survey, Reston, VA 20192, rayuso@usgs.gov and TILL, Alison B., USGS, Anchorage, AK 99508
181-4162SANDSTONE PETROGRAPHY, FOSSILS, AND DETRITAL ZIRCON AGES DISTINGUISH PROVENANCE IN THE TIKCHIK LAKES AREA, SOUTHWEST ALASKA: KARL, Susan M., US Geological Survey, 4200 University Dr, Anchorage, AK 99508, skarl@usgs.gov, BOX, Stephen E., USGS, 904 W. Riverside Ave, Room 202, Spokane, WA 99201, and FRIEDMAN, Richard M., Dept. Earth and Ocean Sciences, University of British Columbia, 6339 Stores Rd, Vancouver, BC V6T1Z4, Canada
181-5163NEW CONSTRAINTS ON THE ORIGIN OF THE TIKCHIK TERRANE, SOUTHWESTERN ALASKA: BOX, Stephen E., USGS, 904 W. Riverside Ave, Room 202, Spokane, WA 99201, sbox@usgs.gov, KARL, Susan M., USGS, 4210 University Dr, Anchorage, AK 99508-4626, and FRIEDMAN, Richard M., Pacific Centre for Isotopic and Geochemical Research, Univ of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada
181-6164DETRITAL ZIRCON GEOCHRONOLOGY OF THE UPPER CRETACEOUS KUSKOKWIM GROUP, SOUTHWESTERN ALASKA: MILLER, Marti L., Alaska Science Center, U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667, mlmiller@usgs.gov, BRADLEY, Dwight, USGS, 4200 University Dr, Anchorage, AK 99508, KALBAS, James L., ExxonMobil Development Company, Houston, TX 77381, FRIEDMAN, Richard, Earth and Ocean Sciences, The Univ of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, and O'SULLIVAN, Paul B., Apatite to Zircon, Inc, 1075 Matson Rd, Viola, ID 83872-9709
181-7165MULTI-STAGE CRETACEOUS BASIN DEVELOPMENT IN SOUTHWESTERN ALASKA: MARINE DEPOSITIONAL RESPONSES DURING SYN- TO EARLY POST-COLLISION (?) MARGIN EVOLUTION: KALBAS, James L., ExxonMobil Development Company, Houston, TX 77381, jay.l.kalbas@exxonmobil.com, RIDGWAY, Kenneth D., Dept. of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907-2051, MILLER, Marti L., U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667, and BRADLEY, Dwight C., U.S. Geological Survey, 4200 University Dr, Anchorage, AK 99508-4667
181-8166STRATIGRAPHY, GEOCHRONOLOGY, GEOCHEMISTRY, AND PALEONTOLOGY OF THE MCCARTHY FORMATION, WRANGELL MOUNTAINS, ALASKA: BEARINGS ON PRE-COLLISION CRUSTAL CONDITIONS WITHIN THE WRANGELLIA TERRANE: WITMER, John1, TROP, Jeffrey1, RIOUX, Matthew2, PÁLFY, József3, and BLODGETT, Robert B.4, (1) Dept. of Geology, Bucknell University, Lewisburg, PA 17837, jwitmer@bucknell.edu, (2) Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, (3) Hungarian Academy of Sciences, Hungarian Natural History Museum, Budapest, H-1431, Hungary, (4) U.S. Geological Survey - Contractor, 4200 University Drive, Anchorage, AK 99508
181-9167UPDATES TO THE LATE PALEOZOIC HISTORY OF THE ALEXANDER TERRANE: KATVALA, Erik Cowing, Geology and Geophysics, University of Calgary, 2500 University Drive, NW, Calgary, AB T2N 1N4, Canada, erik@croatoan.org and HENDERSON, Charles, Geology and Geophysics, Univ of Calgary, Calgary, AB T2N 1N4, Canada
181-10168DETRITAL ZIRCON AGES FROM METASEDIMENTS IN THE FORTYMILE DISTRICT, EAST CENTRAL ALASKA: VAN WYCK, Nicholas, Sisyphus Consulting, 3705 Arctic Blvd. #1150, Anchorage, AK 99503, nvw@sisyphus-consulting.com
181-11169PALEOGEOGRAPHY OF THE DEVONIAN WOODCHOPPER VOLCANICS, YUKON-CHARLEY RIVERS NATIONAL PRESERVE, EAST-CENTRAL ALASKA: ROHR, David M., Earth & Physical Sciences, Sul Ross State University, 400 N. Harrison Street, Alpine, TX 79832, BLODGETT, Robert B., US Geological Survey - Contractor, 4200 University Drive, Anchorage, AK 99508, rblodgett@usgs.gov, and BECKSTEAD, Douglas, National Park Service, Fairbanks, AK 99701
181-12170REVISITING THE PALEOMAGNETISM OF A PALEOCENE TRENCH-RIDGE-TRENCH TRIPLE JUNCTION; KODIAK ISLANDS, ALASKA: O'CONNELL, Kristin, Science Education Resource Center, Carleton College, Northfield, MN 55057, koconnell@carleton.edu, HOUSEN, Bernard, Bellingham, WA 98225, and ROESKE, Sarah, Davis, CA 95616
181-13171THERMOCHRONOLOGIC CONSTRAINTS ON THE UPLIFT AND FORMATION OF DENALI MOUNT MCKINLEY, CENTRAL ALASKA BASED ON APATITE U-TH/HE DATING: PERRY, S.E. and FITZGERALD, P.G., Earth Sciences, Syracuse University, Syracuse, NY 13444, seperr01@syr.edu
181-14172VARIABLE EXHUMATION ALONG THE STRIKE OF THE ALASKA RANGE: BENOWITZ, Jeff, Geology and Geophysics, University of Alaska Fairbanks, P.O. Box 755780, Fairbanks, AK 99775, ftjab@uaf.edu, PERRY, Stephanie, Department of Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse, NY 13244, LAYER, Paul, College of Natural Science and Mathematics, Univ of Alaska Fairbanks, PO 755780, Fairbanks, AK 99775, and FITZGERALD, Paul, Syracuse Univ, Syracuse, NY 13244-1070
181-15173MIOCENE INTRA-ARC BASIN DEVELOPMENT WITHIN THE WRANGELL VOLCANIC FIELD, FREDERIKA FORMATION AND LOWER WRANGELL LAVA, EASTERN WRANGELL MOUNTAINS, ALASKA: TROP, Jeffrey1, SNYDER, Darin2, HART, William3, IDLEMAN, Bruce4, and DELANEY, M. Ryan1, (1) Dept. of Geology, Bucknell University, Lewisburg, PA 17837, jtrop@bucknell.edu, (2) Dept. of Geology, Miami University, Oxford, OH 45056, (3) Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, (4) Dept of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015
181-16174MIOCENE AND PLIOCENE SEDIMENTARY FOOTPRINT OF FLAT-SLAB SUBDUCTION OF THE YAKUTAT TERRANE, SOUTHERN ALASKA: FINZEL, Emily S.1, RIDGWAY, Kenneth1, BRENNAN, Patrick2, and LANDIS, Paul3, (1) Department of Earth and Atmospheric Sciences, Purdue University, 500 Stadium Mall Drive, West Lafayette, IN 47907, efinzel@purdue.edu, (2) Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, (3) Chevron North America Exploration and Production Company, 1500 Louisiana Street, Houston, TX 77002
181-17175NEW INSIGHTS INTO THE ORIGIN AND DISPLACEMENT HISTORY OF THE YAKUTAT TERRANE, SOUTHEASTERN ALASKA: LANDIS, Paul1, RIDGWAY, Kenneth1, BRENNAN, Patrick2, and GEHRELS, George3, (1) Department of Earth and Atmospheric Sciences, Purdue University, 500 Stadium Mall Drive, West Lafayette, IN 47907, plandis@purdue.edu, (2) Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, (3) Department of Geosciences, University of Arizona, Tucson, AZ 85721
181-18176TRANSPORT STRATIGRAPHY OF THE YAKUTAT TERRANE, SOUTHERN ALASKA BASED ON DETRITAL ZIRCON FISSION-TRACK AND U/PB ANALYSIS: PERRY, S.E., Earth Sciences, Syracuse University, Syracuse, NY 13444, seperr01@syr.edu, GARVER, J.I., Geology, Union College, Olin Building, Schenectady, NY 12308, and RIDGWAY, K.D., Earth & Atmospheric Sciences, Purdue Univ, 1397 Civil Engineering Bldg, West Lafayette, IN 47907-1397
181-19177DO ALONG-STRIKE CHANGES IN SUBDUCTION PLATE GEOMETRY INFLUENCE INTRACONTINENTAL STRESS LOCALIZATION? NUMERICAL MODELS OF THE PACIFIC-YAKUTAT-CENTRAL ALASKA PLATE BOUNDARY: WILLIS, Julie B., Geology, BYU-Idaho, 525 South Center, Rexburg, ID 83460, willisj@byui.edu and BRUHN, Ronald L., Dept. of Geology and Geophysics, Univeristy of Utah, 135 S 1460 E, Rm 719, Salt Lake City, UT 84112
181-20178ACTIVE TECTONICS OF THE WESTERN ST. ELIAS SYNTAXIS: PAVLIS, Terry L.1, CHAPMAN, J.B.1, VORKINK, M.2, BRUHN, Ronald L.3, and RIDGWAY, Kenneth4, (1) Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, tlpavlis@utep.edu, (2) Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, (3) Geology and Geophysics, Univ of Utah, 135 S 1460 E RM 716, Salt Lake City, UT 84112-0111, (4) Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907
181-21179USING LIDAR TO DISTINGUISH BETWEEN COMPETING MODELS OF TERRANE ACCRETION IN THE WESTERN SEGMENT OF THE SAINT ELIAS OROGEN, ALASKA: VORKINK, Mike, Department of Geology and Geophysics, University of Utah, 135 South 1460 East, Browning Building - Room 719, Salt Lake City, UT 84112, m.vorkink@utah.edu, BRUHN, Ron, Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, PAVLIS, Terry, Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79902, MCALPIN, Jim, GeoHaz Consulting, Crestone, CO 81131, and CHAPMAN, Jay, Department of Geological Sciences, UTEP, El Paso, 79902
181-22180ARCHITECTURE, KINEMATICS, AND EXHUMATION OF A GLACIATED OROGENIC WEDGE: THE CENTRAL ST. ELIAS OROGEN, ALASKA: SPOTILA, James A., Geological Sciences, Virginia Polytechnic Institute and State Univ, 4064 Derring Hall, Blacksburg, VA 24061, spotila@vt.edu, BERGER, Aaron L., Geological Sciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, CHAPMAN, Jay, Department of Geological Sciences, UTEP, El Paso, 79902, PAVLIS, Terry, Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79902, and ENKELMANN, Eva, Earth and Environmental Science, Lehigh University, 31 Williams Dr, Bethlehem, PA 18015
181-23181TECTONICS AND STRUCTURAL EVOLUTION OF THE EASTERN ST. ELIAS SYNTAXIS, ALASKA: CHAPMAN, James B., Geological Sciences, University of Texas, El Paso, 500 W. University Ave, El Paso, TX 79968, jbchapman@miners.utep.edu, PAVLIS, Terry L., Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, BARKER, Adam, Bryand global sciences center, Orono, ME 04469, HEADLEY, Rachel, Johnson Hall 070 Box 351310, 4000 15th Avenue NE, Seattle, WA 98195, RIDGWAY, Kenneth, Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, BERGER, Aaron L., Geological Sciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, SPOTILA, James, Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24060, VORKINK, Michael, Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, and BRUHN, Ronald L., Geology and Geophysics, Univ of Utah, 135 S 1460 E RM 716, Salt Lake City, UT 84112-0111
181-24182KYANITE AFTER ANDALUSITE IN THE CONTACT AUREOLE OF AN EPIDOTE-BEARING PLUTON NEAR PETERSBURG, ALASKA: CONFIRMATION OF RAPID TECTONIC BURIAL IN SOUTHEAST ALASKA?: DETTINGER, Matthew1, COLWELL, Lauren2, KRISHNAN, Sonya2, MACKEY, Tyler2, and DAVIDSON, C.2, (1) Department of Geosciences, University of Arizona, Gould-SimpsonBuilding #77, 1040 E 4th St, Tucson, AZ 85721, dettingm@carleton.edu, (2) Department of Geology, Carleton College, One North College St, Northfield, MN 55057
181-25183STRUCTURE AND TECTONIC EVOLUTION OF THE BELT BASIN, MONTANA/IDAHO FROM GEOPHYSICAL CONSTRAINTS: BEDROSIAN, Paul A., US Geological Survey, Denver Federal Center, Bldg 20, MS 964, Denver, CO 80225, pbedrosian@usgs.gov, BOX, Stephen E., USGS, 904 W. Riverside Ave, Room 202, Spokane, WA 99201, and PELLERIN, Louise, Green Engineering Inc, Anchorage, AK 99507-3668
181-26184OXYGEN ISOTOPE RATIOS OF REFRACTORY MINERAL PHASES FROM LARAMIDE-RELATED TERTIARY INTRUSIONS OF THE BLACK HILLS, SOUTH DAKOTA: KING, E.M.1, MEISTER, P.A.1, SPICUZZA, M.J.2, and VALLEY, J.W.3, (1) Geography-Geology, Illinois State University, Campus Box 4400, Normal, IL 61790, emking@ilstu.edu, (2) Geoscience, University of Wisconsin, 1215 West Dayton Street, Madison, WI 53706, (3) Geology and Geophysics, University of Wisconsin, 1215 West Dayton Street, Madison, WI 53706
181-27185ROLES OF SLAB WINDOW MIGRATION, FAULT GEOMETRY AND TECTONIC WEDGING IN CRUSTAL EVOLUTION EAST OF THE NORTHERN SAN ANDREAS FAULT: MCLAUGHLIN, Robert J.1, JACHENS, Robert C.1, LANGENHEIM, Victoria1, FLECK, Robert J.2, SARNA-WOJCICKI, Andrei M.1, EVANS, William C.1, and DAVISSON, M. Lee3, (1) U. S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, rjmcl@usgs.gov, (2) U. S. Geological Survey, 345 Middlefield Road, MS 937, Menlo Park, CA 94025, (3) Environmental Science Division, Lawrence Livermore National Lab, P.O. Box 808 L-396, Livermore, CA 94550
181-28186FORMATION AGE AND MAGMA SOURCES FOR THE ANTIOQUEÑO BATHOLITH DERIVED FROM LA-ICP-MS URANIUM–LEAD DATING AND HAFNIUM-ISOTOPE ANALYSIS OF ZIRCON GRAINS: RESTREPO-MORENO, Sergio A., Department of Geological Sciences, University of Florida, PO Box 112120, Gainesville, FL 32611, sergiorm@ufl.edu, FOSTER, David A., Department of Geological Sciences, University of Florida, PO Box 112120, Gainesvile, FL 32611, and KAMENOV, G.D., Department of Geological Sciences, University of Florida, Gainesville, FL 32611

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