Session: Plate Margin Processes and Tectonics during the Cretaceous, Western North America (Joint 70th Rocky Mountain Annual Section / 114th Cordilleran Annual Section Meeting

Session No. 6

Tuesday, 15 May 2018: 8:20 AM-10:05 AM

Humphreys/Mt. Elden Room (DoubleTree by Hilton)

T12. Plate Margin Processes and Tectonics during the Cretaceous, Western North America

GSA Geophysics and Geodynamics Division; GSA Sedimentary Geology Division; GSA Structural Geology and Tectonics Division

Bernard Housen and Basil Tikoff, Advocates

Paper #

Start Time

8:20 AM

Introductory Remarks

6-1

8:25 AM

TIMING, KINEMATICS, AND BASIN EVOLUTION OF THE SYNCONTRACTIONAL BIRD SPRINGS CONGLOMERATE, SOUTHEREN SEVIER FOLD AND THRUST BELT, NEVADA: IMPLICATIONS FOR MID-CRETACEOUS PLATE DYNAMICS

RAFFERTY, Kevin C., CRAIG, Taylor D., WELLS, Michael L. and MEDEMA, Jayson, Department of Geoscience, University of Nevada - Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010

6-2

8:45 AM

DETRITAL ZIRCONS FROM QUARTZITES CONSTRAIN THE WESTERN MARGIN OF LAURENTIA IN SOUTH-WESTERNMOST IDAHO

KAHN, Maureen¹, TIKOFF, Basil¹, PARRISH, Ethan¹, VERVOORT, Jeffrey² and EVANS, Cameron¹, (1)Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St, Madison, WI 53706, (2)School of Earth and Environmental Sciences, Washington State University, Webster Physical Science Building 1228, Pullman, WA 99164

6-3

9:05 AM

THE MID-CRETACEOUS OREGONIAN EVENT: CLOSURE OF A MARGINAL SEAWAY BY WESTWARD SUBDUCTION IN THE NORTH AMERICAN CORDILLERA

HILDEBRAND, Robert S., 1401 N. Camino de Juan, Tucson, AZ 85745 and WHALEN, Joseph B., Geological Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada

6-4

9:25 AM

U-PB AND HF ISOTOPIC ANALYSIS OF DETRITAL ZIRCONS FROM PALEOZOIC AND CRETACEOUS STRATA OF SOUTHERN VANCOUVER ISLAND, BRITISH COLUMBIA

ALBERTS, Daniel G., Geosciences, TheUniversity of Arizona, 1040 E 4th St, Tucson, AZ 85719, GEHRELS, George E., Department of Geosciences, Univ of Arizona, Tucson, AZ 85721 and NELSON, JoAnne L., British Columbia Geological Survey, P.O. Box 9320 Stn Prov Govt, Victoria, BC V8W 9N3

6-5

9:45 AM

THE EFFECTS OF SUPERIMPOSED DEFORMATION EVENTS ON STRIKE-SLIP TRANSLATION IN THE CORDILLERA: AN EXAMPLE FROM THE DENALI FAULT SYSTEM

WALDIEN, Trevor S. and ROESKE, Sarah M., Earth and Planetary Sciences, University California- Davis, 2119 Earth and Physical Sciences, One Shields Avenue, Davis, CA 95616

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Joint 70th Rocky Mountain Annual Section / 114th Cordilleran Annual Section Meeting - 2018

T12. Plate Margin Processes and Tectonics during the Cretaceous, Western North America