Session: New Insights on the Tectonic, Magmatic, Paleobiogeographic, and Metallogenic Evolution of Terranes in the North American Cordillera from Alaska to California I (2010 GSA Denver Annual Meeting (31 October

T150. New Insights on the Tectonic, Magmatic, Paleobiogeographic, and Metallogenic Evolution of Terranes in the North American Cordillera from Alaska to California I

GSA Structural Geology and Tectonics Division; GSA Geophysics Division; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

Luke Beranek, Andrew H. Caruthers and Tyler William Ruks, Advocates

Paper #

Start Time

8:00 AM

Introductory Remarks

8:05 AM

A PALEOZOIC NORTHWEST PASSAGE AND THE TIMANIAN, CALEDONIAN AND URALIAN CONNECTIONS OF SOME EXOTIC TERRANES IN THE NORTH AMERICAN CORDILLERAN

COLPRON, Maurice, Yukon Geological Survey, Whitehorse, YT Y1A 2C6, Canada and NELSON, JoAnne, B.C. Geological Survey Branch, Box 9333, Stn Prov Govt, Victoria, BC V8W 9N3, Canada, Maurice.Colpron@gov.yk.ca, Maurice.Colpron@gov.yk.ca

8:25 AM

BALTICA IN THE CORDILLERA?

MILLER, Elizabeth L.¹, KUZNETSOV, Nikolay², SOBOLEVA, Anna³, UDORATINA, Oxana³, GROVE, Marty¹ and GEHRELS, G.E.⁴, (1)Department of Geological Sciences, Stanford University, Stanford, CA 94305, (2)Geological Institute Russian Academy of Sciences, Moscow, 119017, Russia, (3)Institute of Geology, KOMI Scientific Center, Uralian Branch of the Russian Academy of Sciences, Syktyvkar, 167982, Russia, (4)Department of Geosciences, University of Arizona, Tucson, AZ 85721, elmiller@stanford.edu, elmiller@stanford.edu

8:40 AM

DETRITAL ZIRCON GEOCHRONOLOGY OF NEOPROTEROZOIC AND PALEOZOIC UNITS OF THE PEARYA TERRANE, ELLESMERE ISLAND, CANADA

MALONE, Shawn Joseph, Department of Geoscience, University of Iowa, 121 Trowbridge Hall, Iowa City, IA 52242 and MCCLELLAND, William C., Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, shawn-malone@uiowa.edu, shawn-malone@uiowa.edu

8:55 AM

PALEOGEOGRAPHIC RECONSTRUCTION OF THE ARCTIC ALASKA-CHUKOTKA TERRANE BASED ON ZIRCON AND PALEONTOLOGIC DATA FROM SEWARD PENINSULA

TILL, Alison B., USGS, 4210 University Dr, Anchorage, AK 99508, DUMOULIN, Julie A., N/a, U.S. Geol Survey, 4210 University Dr, Anchorage, AK 99508 and BRADLEY, Dwight C., USGS, 4200 University Dr, Anchorage, AK 99508-4626, atill@usgs.gov, atill@usgs.gov

9:10 AM

TECTONIC SIGNIFICANCE OF U-PB DETRITAL ZIRCON RESULTS FROM PRE-MISSISSIPPIAN BASEMENT ROCKS OF THE NORTHEAST BROOKS RANGE, ARCTIC ALASKA TERRANE, NORTHERN ALASKA

MOORE, Thomas E. and BIRD, Kenneth J., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, tmoore@usgs.gov, tmoore@usgs.gov

9:25 AM

RECOGNITION OF A REGIONAL ORDOVICIAN VALMY FORMATION THRUST SHEET: IMPLICATIONS FOR ASSEMBLY OF THE ROBERTS MOUNTAINS ALLOCHTHON AND EXPLORATION FOR CONCEALED CARLIN-TYPE GOLD DEPOSITS

HOLM-DENOMA, Christopher S., Central Mineral and Environmental Resources Science Center, United States Geological Survey, Box 25046, MS 973, Denver, CO 80225-0046, HOFSTRA, A.H, USGS, U.S. Geological Survey, Denver Federal Center, POB 25046, MS 973, Denver, CO 80225, CAPPS, Richard C., Consulting Geologist, 771 Rocky Branch Lane, Evans, GA 30809, NOBLE, Paula J., Department of Geological Sciences & Engineering, University of Nevada, MS 172, Reno, NV 89557 and ROCKWELL, Barnaby W., U.S. Geological Survey, P.O. Box 25046, Denver Federal Center, MS 973, Denver, CO 80225, cholm-denoma@usgs.gov, cholm-denoma@usgs.gov

9:40 AM

Break

9:55 AM

UPPER ORDOVICIAN-MIDDLE DEVONIAN PALEOBIOGEOGRAPHIC SIGNALS FROM SHELLY FAUNAS OF THE ALEXANDER TERRANE, SOUTHEAST ALASKA

BLODGETT, Robert B., Geological Consultant, 2821 Kingfisher Drive, Anchorage, AK 99502 and ROHR, David M., Biology, Geology and Physical Sciences, Sul Ross State University, Alpine, TX 79832, RobertBBlodgett@yahoo.com, RobertBBlodgett@yahoo.com

10:15 AM

CRUSTAL AFFINITY OF LATE CAMBRIAN-EARLY ORDOVICIAN ROCKS IN THE NORTHERN ALEXANDER TERRANE, NORTHWESTERN CANADA

BERANEK, Luke P., Geological Survey of Canada, 625 Robson Street, Vancouver, BC V6B 5J3, Canada, VAN STAAL, Cees, Geological Survey of Canada, 1500-605 Robson Street, Vancouver, BC V6B 5J3, Canada, MCCLELLAND, William C., Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, ISRAEL, Steve A., Yukon Geological Survey, 2099 2nd Ave, Whitehorse, YT Y1A 2C6, Canada, MIHALYNUK, Mitchell G., Victoria, BC v8x 2z3, Canada, GORDEE, Sarah M., University of Tasmania, Hobart, Tasmania, 7001, Australia and JOYCE, Nancy, Geological Survey of Canada, Ottawa, ON K1A 0E8, Canada, luke.beranek@nrcan.gc.ca, luke.beranek@nrcan.gc.ca

10:30 AM

NEW DATA AND IDEAS ON THE PALEOZOIC-TRIASSIC EVOLUTION OF THE INSULAR SUPERTERRANE OF THE NORTH AMERICAN CORDILLERA

VAN STAAL, Cees R.¹, BERANEK, Luke¹, ISRAEL, Steve A.², MCCLELLAND, William C.³, MIHALYNUK, Mitchell G.⁴, NELSON, JoAnne⁵ and JOYCE, Nancy⁶, (1)Geological Survey of Canada, 625 Robson Street, Vancouver, BC V6B 5J3, Canada, (2)Yukon Geological Survey, 2099 2nd Ave, Whitehorse, YT Y1A 2C6, Canada, (3)Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA 52242, (4)Victoria, BC v8x 2z3, Canada, (5)B.C. Geological Survey Branch, Box 9333, Stn Prov Govt, Victoria, BC V8W 9N3, Canada, (6)Geological Survey of Canada, Ottawa, ON K1A 0E8, Canada, cees.vanstaal@nrcan-rncan.gc.ca, cees.vanstaal@nrcan-rncan.gc.ca

10:45 AM

STRATIGRAPHIC AND PALEOTECTONIC STUDIES OF THE MIDDLE PALEOZOIC SICKER GROUP AND CONTAINED VMS OCCURRENCES, VANCOUVER ISLAND, BRITISH COLUMBIA

RUKS, Tyler William, Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, MORTENSEN, James K., Earth & Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada and CORDEY, Fabrice, Sciences de la Terre, Université Lyon 1, UMR 5125 PEPS, CNRS, Campus La Doua, Villeurbanne, 69622, France, tyler_ruks@hotmail.com, tyler_ruks@hotmail.com

11:00 AM

GEOLOGIC RELATIONSHIPS OF WRANGELLIA IN YUKON: IMPLICATIONS FOR INSULAR TERRANE TECTONICS

ISRAEL, Steve A., Yukon Geological Survey, 2099 2nd Ave, Whitehorse, YT Y1A 2C6, Canada, FRIEDMAN, Richard, Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4 and MORTENSEN, James K., Earth and Ocean Sciences, University of British Columbia, Vancouver, BC V6T 1Z4, Canada, steve.israel@gov.yk.ca, steve.israel@gov.yk.ca

11:15 AM

THE DUKE RIVER FAULT, SOUTHWEST YUKON: PRELIMINARY EXAMINATION OF THE RELATIONSHIPS BETWEEN WRANGELLIA AND THE ALEXANDER TERRANE

COBBETT, Rose, Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T1Z4, Canada, MORTENSEN, James K., Earth & Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, ISRAEL, Steve A., Yukon Geological Survey, 2099 2nd Ave, Whitehorse, YT Y1A 2C6, Canada and VAN STAAL, C.R., Geological Survey of Canada, 625 Robson Street, Vancouver, BC V6B 5J3, Canada, cobbettrosie@gmail.com, cobbettrosie@gmail.com

11:30 AM

TRACKING THE FUGITIVE WRANGELLIAN ARC

COLLINS, William J., Earth & Environmental Sciences, James Cook University, Douglas Campus, James Cook University, Townsville, 4811, Australia and MILLER, Robert, Department of Geology, San Jose State Univ, San Jose, CA 95192-0102, bill.collins@jcu.edu.au, bill.collins@jcu.edu.au

11:45 AM

Discussion

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