Geological Society of America

8:00 AM

ALASKA IN 3 ACTS – A POTENTIAL FIELD/TECTONIC STORY

Richard W. Saltus, US Geological Survey, Denver, CO and Sarah M. Roeske, University of California, Davis, Davis, CA

196497 (Technical Sessions)

8:15 AM

ARCTIC ALASKA-CHUKOTKA CRUSTAL RESPONSE TO JURASSIC-CRETACEOUS PLATE-MARGIN TECTONICS

Alison B. Till, USGS, Anchorage, AK and Andrew Calvert, US Geological Survey, Menlo Park, CA and David W. Houseknecht, Reston, VA

193816 (Technical Sessions)

8:30 AM

DETRITAL ZIRCON-BASED PROTOLITH AGES, AFFINITIES, AND TECTONIC INTERPRETATIONS OF TWO GEOLOGIC “BLACK HOLES” IN ALASKA

Dwight Bradley, U.S. Geological Survey, Anchorage, AK and Alison Till, USGS, Anchorage, AK and Marti L. Miller, U.S. Geological Survey, Anchorage, AK and Paul O'Sullivan, Apatite to Zircon, Inc, Viola, ID

195546 (Technical Sessions)

8:50 AM

TOPOGRAPHIC AND EXHUMATION ASYMMETRY OF THE ALASKA RANGE RELATIVE TO THE DENALI FAULT: A REFLECTION OF LITHOSPHERIC HETEROGENEITY

P.G. Fitzgerald, Syracuse University, Syracuse, NY and Sarah Roeske, Univ California - Davis Dept Earth & Planetary Sciences, Davis, CA and Jeff Benowitz, University of Alaska Fairbanks, Fairbanks, AK and Stephanie E. Perry, Syracuse University, Syracuse, NY and Steven Riccio, Syracuse University, Syracuse, N/A and Casey Huff, University of California, Davis, Davis, CA

195607 (Technical Sessions)

9:05 AM

THE TOPOGRAPHICALLY ASYMMETRICAL ALASKA RANGE: MULTIPLE TECTONIC DRIVERS THROUGH SPACE AND TIME

Jeff Benowitz, University of Alaska Fairbanks, Fairbanks, AK and Phillip A. Armstrong, California State University, Fullerton, Fullerton, CA and Paul Fitzgerald, Syracuse Univ, Syracuse, NY and Peter J. Haeussler, Anchorage, AK and Paul W. Layer, Univ of Alaska Fairbanks, Fairbanks, AK and Paul O'Sullivan, Apatite to Zircon, Inc, Viola, ID and Stephanie Perry, Syracuse University, Syracuse, NY and Steven Riccio, Syracuse University, Syracuse, N/A and Sarah M. Roeske, University of California, Davis, Davis, CA

196961 (Technical Sessions)

9:20 AM

PROVENANCE OF JURASSIC TO CRETACEOUS FLYSCH ALONG THE TALKEETNA-CHILCHITNA FAULT SYSTEM HIGHLIGHTS THE NORTHERN BOUNDARY OF THE WRANGELLIA COMPOSITE TERRANE, ALASKA

Chad P. Hults, USGS, Anchorage, AK and Frederic Wilson, U.S. Geological Survey, Anchorage, AK and Margaret Donelick, Apatite to Zircon, Inc, Viola, ID and Paul O'Sullivan, Apatite to Zircon, Inc, Viola, ID

192487 (Technical Sessions)

9:35 AM

NEW U-PB AGES AND HF ISOTOPIC VALUES FROM THE KAHILTNA ASSEMBLAGE IN THE EASTERN ALASKA RANGE, SOUTH-CENTRAL ALASKA

Casey J. Huff, University of California, Davis, Davis, CA and Sarah M. Roeske, University of California, Davis, Davis, CA and Philip R. Mooney, University of California, Davis, Davis, CA and Josh Wimpenny, University of California, Davis, Davis, CA and Qing-zhu Yin, U.C. Davis, Davis, CA and G.E. Gehrels, University of Arizona, Tucson, AZ

194766 (Technical Sessions)

9:50 AM

STRUCTURES AND STRAIN HISTORIES ACROSS THE SUTURE: IMPLICATIONS FOR THE KINEMATICS OF THE COLLISION OF THE WRANGELLIA COMPOSITE TERRANE WITH THE MARGIN OF NORTH AMERICA

Sara E. Bier, Emory and Henry College, Emory, VA and Donald M. Fisher, Pennsylvania State University, University Park, PA

192250 (Technical Sessions)

10:05 AM

EARLY CENOZOIC TALKEETNA MOUNTAINS MAGMATISM IN SOUTH-CENTRAL ALASKA: RECORD OF CRUST-MANTLE VARIATIONS, TERRANE ACCRETION, AND PLUTON EXHUMATION

Ronald B. Cole, Allegheny College, Meadville, PA and Brian Stewart, University of Pittsburgh, Pittsburgh, PA and Paul W. Layer, Univ of Alaska Fairbanks, Fairbanks, AK

194881 (Technical Sessions)

10:20 AM

THERMAL EVOLUTION OF FLYSCH OF THE CHUGACH-PRINCE WILLIAM TERRANES, EASTERN PRINCE WILLIAM SOUND, ALASKA

John I. Garver, Union College, Schenectady, NY and C. Davidson, Carleton College, Northfield, MN and Tyler I. Izykowski, Union College, Schenectady, NY and Edward R. Milde, Syracuse University, Syracuse, NY

196737 (Technical Sessions)

10:35 AM

FOCUSED ROCK UPLIFT RELATED TO FLAT-SLAB SUBDUCTION IN SOUTHERN ALASKA: INBOARD, OUTBOARD, AND IN BETWEEN

Phillip A. Armstrong, California State University, Fullerton, Fullerton, CA and Jeanette C. Arkle, California State University, Fullerton, Fullerton, CA and Peter J. Haeussler, Anchorage, AK and Michael G. Prior, California State University, Fullerton, Fullerton, CA and Sean Hartman, California State University, Fullerton, Fullerton, CA

198058 (Technical Sessions)

10:50 AM

STRUCTURE OF THE ACTIVELY DEFORMING FOLD-THRUST BELT OF THE ST. ELIAS OROGEN WITH IMPLICATIONS FOR GLACIAL EXHUMATION AND 3D TECTONIC PROCESSES

Terry Pavlis, University of Texas at El Paso, El Paso, TX and J.B. Chapman, University of Texas at El Paso, El Paso, TX and Ron Bruhn, University of Utah, Salt Lake City, UT and Kenneth Ridgway, Purdue University, West Lafayette, IN and Lindsay Lowe Worthington, Texas A&M University, College Station, TX and Sean P.S. Gulick, Univ of Texas at Austin, Austin, TX

193512 (Technical Sessions)

11:05 AM

THREE DIMENSIONAL DEFORMATION IN THE EASTERN ST. ELIAS SYNTAXIS

Gary Pavlis, Indiana University, Bloomington, IN and Terry Pavlis, University of Texas at El Paso, El Paso, TX and Roger Hansen, University of Alaska, Fairbanks, Fairbanks, AK and Julie Elliot, University of Alaska, Fairbanks, Fairbanks, AK and Mark Bauer, Indiana University, Bloomington, IN

195948 (Technical Sessions)

11:20 AM

PERSISTENTLY HIGH GEOTHERMAL GRADIENT ABOVE THE OKANOGAN DETACHMENT: THERMAL WEAKENING IS A CAUSE BUT NOT TRIGGER OF OROGENIC COLLAPSE

Juliet G. Crider, University of Washington, Seattle, WA and Owen A. Callahan, Bureau of Economic Geology, Austin, TX

196620 (Technical Sessions)

11:35 AM

MIDDLE TO LATE JURASSIC BACK-ARC MAGMATISM IN THE U.S. CORDILLERA: NEW AGE DATA AND TECTONIC IMPLICATIONS

Sandra J. Wyld, MapTect LLC, Athens, GA and James E. Wright, University of Georgia, Athens, GA

194505 (Technical Sessions)

T230 Tectonic Development of the Northern North American Cordillera

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