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Cordilleran Section - 113th Annual Meeting - 2017

Session No. 2
Tuesday, 23 May 2017: 8:30 AM-11:50 AM
Room 318A (Hawai‘i Convention Center)

T1. Cordilleran Magmatic Forensics I—Insights from the Igneous, Metamorphic, and Sedimentary Record

 

Shanaka de Silva, Rita C. Economos, Nancy Riggs and Andy Barth, Advocates
Paper #
Start Time
 
8:30 AM
Introductory Remarks
2-1
8:35 AM
MAGMATIC AND SEISMIC EVIDENCE FOR NEOGENE CRUSTAL AND MANTLE EVOLUTION UNDER THE PUNA PLATEAU OF THE CENTRAL ANDES
KAY, Suzanne Mahlburg, EAS, Cornell University, Ithaca, NY 14853-1504 and COIRA, Beatriz, Conicet, Universidad de Jujuy, Jujuy, Argentina, smk16@cornell.edu, smk16@cornell.edu
2-2
8:55 AM
CORDILLERAN HIGH FLUX EVENTS: INSIGHTS FROM AN IGNIMBRITE FLARE-UP IN THE CENTRAL ANDES
DE SILVA, Shanaka, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, 104 CEOAS Admin Bldg., Corvallis, OR 97331, desilvas@geo.oregonstate.edu, desilvas@geo.oregonstate.edu
2-3
9:15 AM
THE EARLY MIOCENE HORSE CAMP BASIN, NAVADA:  ARCHITECTURE, DEPOSITIONAL HISTORY, AND TECTONIC EVOLUTION OF A CLASSIC EXTENSIONAL HALF GRABEN
GANS, Phillip B., Dept. of Earth Science, UC Santa Barbara, Santa Barbara, CA 93106-9630, gans@geol.ucsb.edu, gans@geol.ucsb.edu
2-4
9:35 AM
EVIDENCE OF A LATE JURASSIC RIDGE SUBDUCTION EVENT: GEOCHEMISTRY AND AGE OF THE QUARTZ MOUNTAIN STOCK, MANASTASH INLIER, CENTRAL CASCADES, WASHINGTON
MACDONALD Jr., James H., Marine & Ecological Sciences, Florida Gulf Coast University, 10501 FGCU Blvd South, Ft. Myers, FL 33965 and SCHOONMAKER, Adam, Department of Geology, Utica College, 1600 Burrstone Rd, Utica, NY 13502, jmacdona@fgcu.edu, jmacdona@fgcu.edu
 
9:55 AM
Break
2-5
10:25 AM
EOCENE HIGH-K, CALC-ALKALINE MAGMATISM WITHIN THE EASTERN LEWIS AND CLARK FAULT ZONE, WEST-CENTRAL MONTANA, USA
MOSOLF, Jesse G., Montana Bureau of Mines and Geology, Montana Tech, 1300 West Park Street, Butte, MT 59701, Jmosolf@mtech.edu, Jmosolf@mtech.edu
2-6
10:45 AM
DATING THE LOST ARC OF ALASKA: CONSTRAINING THE TIMING OF INITIATION OF THE WRANGELL ARC WITH A NEW 40AR/39AR GEOCHRONOLOGY APPROACH ON MODERN RIVER DETRITAL LITHIC GRAINS
DAVIS, Kailyn N.1, BENOWITZ, Jeff2, LAYER, Paul W.2, TROP, Jeffrey3 and BRUESEKE, Matthew4, (1)Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, (2)Geophysical Institute and Geochronology Laboratory, University of Alaska Fairbanks, Fairbanks, AK 99775, (3)Dept. of Geology, Bucknell University, Lewisburg, PA 17837, (4)Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS 66506, kndavis@alaska.edu, kndavis@alaska.edu
2-7
11:05 AM
INVESTIGATING THE LOST ARC: GEOLOGIC CONSTRAINTS ON ~29 MILLION YEARS OF CONTINUOUS MAGMATISM ALONG AN ARC-TRANSFORM JUNCTION, WRANGELL ARC, ALASKA
TROP, Jeffrey M.1, BENOWITZ, Jeff2, BRUESEKE, Matthew3, DAVIS, Kailyn N.4, BERKELHAMMER, Samuel E.3, MORTER, Bethany K.3, LAYER, Paul W.2, WEBER, Maridee3, FITZGERALD, Victoria T.3, KEAST, Ryan T.3 and MORETTI, Brian1, (1)Geology and Environmental Geosciences, Bucknell University, 1 Dent Drive, Lewisburg, PA 17837, (2)Geophysical Institute and Geochronology Laboratory, University of Alaska Fairbanks, Fairbanks, AK 99775, (3)Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS 66506, (4)Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, jtrop@bucknell.edu, jtrop@bucknell.edu
2-8
11:25 AM
NEW ZIRCON-MELT PARTITION COEFFICIENTS FROM NATURAL ZIRCON-GLASS PAIRS APPLIED TO MOUNT ST. HELENS, USA: UNDERSTANDING MSH MELT COMPOSITIONS THROUGH TIME
CLAIBORNE, Lily L.1, MILLER, Calvin F.1, GUALDA, Guilherme A.R.1 and CARLEY, Tamara L.2, (1)Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, (2)Department of Geology and Environmental Geosciences, Lafayette College, Easton, PA 18042, lily.claiborne@vanderbilt.edu, lily.claiborne@vanderbilt.edu
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