Session No. 8
Tuesday, 12 May 2015: 8:00 AM-12:00 PM
Room 116 (Fine Arts Building)
T10. Tempo of Arc Emplacement and Accretion
Elisabeth S. Nadin, Chad Hults and Erin Todd, Advocates
8:05 AM
LOST IN TRANSLATION: TRACING ISLAND-ARC GEOLOGIC RECORDS FROM MODERN ACTIVITY TO ANCIENT ACCRETED TERRANES
EAST, Amy E., U.S. Geological Survey, 400 Natural Bridges Drive, Santa Cruz, CA 95060 and CLIFT, Peter D., Department of Geology and Geophysics, Louisiana State University, E235 Howe-Russell-Kniffen Geoscience Complex, Baton Rouge, LA 70803, aeast@usgs.gov, aeast@usgs.gov
8:25 AM
THE TIMING OF ARC-CONTINENT COLLISION IN ALASKA FROM DETRITAL ZIRCON AGES IN THE CHUGACH ACCRETIONARY COMPLEX
AMATO, Jeffrey M., Geological Sciences, New Mexico State University, P.O. Box 30001/MSC 3AB, Las Cruces, NM 88003, PAVLIS, Terry L., Geological Sciences, University of Texas at El Paso, El Paso, TX 79968 and CLIFT, Peter D., Department of Geology and Geophysics, Louisiana State University, E235 Howe-Russell-Kniffen Geoscience Complex, Baton Rouge, LA 70803, amato@nmsu.edu, amato@nmsu.edu
8:45 AM
CONGESTED SUBDUCTION ZONES: THE RECORD OF COLLISIONS IN A CONVERGENT MARGIN'S HISTORY
MORESI, Louis1, BETTS, Peter
2, MILLER, Meghan S.
3, O'DRISCOLL, Leland
3 and WILLIS, David
2, (1)School of Earth Sciences, University of Melbourne, School of Earth Sciences, Melbourne University, Melbourne, 3010, Australia, (2)School of Earth, Atmosphere and Environment, Monash University, Clayton, 3800, Australia, (3)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, Louis.Moresi@unimelb.edu.au, Louis.Moresi@unimelb.edu.au
9:05 AM
AGE RELATIONSHIPS WITHIN THE TALKEETNA ARC OF SOUTH-CENTRAL ALASKA
HOOPER, Seth I., Geology and Geophysics, University of Alaska Fairbanks, 3484 Rosie Creek Rd, Fairbanks, AK 99708 and NADIN, Elisabeth S., Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, AK 99775, sihooper@alaska.edu, sihooper@alaska.edu
10:00 AM
NEW GEOCHEMICAL AND AGE CONSTRAINTS ON THE INITIATION OF THE LOST ARC, WRANGELL VOLCANIC BELT, ALASKA
BRUESEKE, Matthew E.1, BENOWITZ, Jeff
2, TROP, Jeffrey M.
3, DAVIS, Kailyn N.
2 and LAYER, Paul
4, (1)Department of Geology, Kansas State University, Manhattan, KS 66506, (2)Geophysical Institute and Geochronology Laboratory, University of Alaska Fairbanks, Fairbanks, AK 99775, (3)Department of Geology, Bucknell University, 701 Moore Avenue, Lewisburg, PA 17837, (4)College of Natural Science and Mathematics, Univ of Alaska Fairbanks, PO 755780, Fairbanks, AK 99775, brueseke@ksu.edu, brueseke@ksu.edu
10:20 AM
NEW INSIGHTS INTO GEOCHEMISTRY OF PALEOGENE VOLCANISM FROM THE TALKEETNA MOUNTAINS, ALASKA
WYPYCH, Alicja1, TWELKER, Evan
1, SICARD, Karri R.
1, REIOUX, David A.
1, FREEMAN, Lawrence K.
1, LANDE, Lauren L.
2, NEWBERRY, Rainer
2 and BENOWITZ, Jeff
3, (1)State of Alaska, Division of Geological & Geophysical Surveys, 3354 College Rd, Fairbanks, AK 99709, (2)Department of Geoscience, University of Alaska Fairbanks, P.O. Box 755780, Fairbanks, AK 99775, (3)Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, alicja.wypych@alaska.gov, alicja.wypych@alaska.gov
10:40 AM
GEOCHEMISTRY OF PLUTONIC ROCKS IN THE WESTERN CASCADES: RELATIONSHIP BETWEEN CRUSTAL SEGMENTATION & ORE GENESIS
UTEVSKY, Elinor S., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, CEOAS Admin 104, Corvallis, OR 97331-5503 and DILLES, John H., College of Earth, Ocean & Atmospheric Sciences, Oregon State University, CEOAS Admin 104, Corvallis, OR 97331-5503, utevskye@onid.oregonstate.edu, utevskye@onid.oregonstate.edu
11:20 AM
THE FORMATION OF NEW CRUST ALONG THE CENTRAL ALEUTIAN ARC—INSIGHTS FROM KASATOCHI VOLCANO
NADIN, Elisabeth S., Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, AK 99775,
KENTNER, Adrienne E., Alaska Department of Natural Resources, Anchorage, AK 99501 and IZBEKOV, Pavel, Geophysical Institute, University of Alaska-Fairbanks, PO Box 757320, Fairbanks, 99775, adrienne.kentner@gmail.com, adrienne.kentner@gmail.com
11:40 AM
EVOLUTION OF THE CHEMICALLY DIVERSE OCEANIC ALEUTIAN ISLAND ARC
KAY, Suzanne Mahlburg, EAS, Cornell University, Ithaca, NY 14853-1504, JICHA, Brian R., Department of Geoscience, University of Wisconsin, 1215 W. Dayton St., Madison, WI 53706 and KAY, Robert W., EAS, Cornell University, Ithaca, NY 14853, smk16@cornell.edu, smk16@cornell.edu