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Session No. 115
Monday, 28 October 2013: 8:00 AM-12:00 PM
Room 605 (Colorado Convention Center)

T169. Volcanology, Mineralogy, Geochemistry & Petrogenesis of Circum-Pacific Magmatism: A Tribute Session to Gerhard Wörner

GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

 

Russell Harmon, Peter W. Lipman and Jon Davidson, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
PANAMA ARC MAGMATISM AND THE EVOLUTION OF THE CANAL EXTENSIONAL ZONE
FARRIS, David W., Earth, Ocean and Atmospheric Science, Florida State University, 909 Antarctic Way, Tallahassee, FL 32306, dwfarris@fsu.edu
2
8:20 AM
EVOLUTION OF A LARGE, HOT, RESTLESS RHYOLITIC MAGMA SYSTEM AT LAGUNA DEL MAULE, CHILE
SINGER, Brad S.1, ANDERSEN, Nathan2, UNSWORTH, Martyn3, CARDONA, Carlos4, JICHA, Brian R.5, FIERSTEIN, Judy6 and HILDRETH, Wes6, (1)Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, (2)Geoscience, University of Wisconsin-Madison, Madison, WI 53706, (3)Physics, University of Alberta, Edmonton, AB T6G 2J1, Canada, (4)Ovdas, Dinamarca, Temuco, 691, Chile, (5)Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, (6)Volcano Science Center, U. S. Geological Survey, 345 Middlefield Road, MS-910, Menlo Park, CA 94025, bsinger@geology.wisc.edu
3
8:40 AM
CONSTRAINING THE MAGMATIC EVOLUTION OF RUAPEHU VOLCANO, NEW ZEALAND: NEW HIGH-PRECISION 40AR-39AR GEOCHRONOLOGY AND GEOCHEMISTRY
CONWAY, Chris E.1, LEONARD, Graham S.2, CALVERT, Andrew T.3, GAMBLE, John A.1 and WILSON, Colin J.N.1, (1)School of Geography, Environment and Earth Sciences, Victoria University of Wellington, PO Box 600, Wellington, 6040, New Zealand, (2)Joint Centre for Disaster Research, GNS Science/Massey University, PO Box 30 368, Lower Hutt, 5040, New Zealand, (3)US Geological Survey, 345 Middlefield Rd, MS-937, Menlo Park, CA 94025, conwaychri@myvuw.ac.nz
4
8:55 AM
THE APPLICATION OF U-SERIES DISEQUILIBRIA TO THE ORIGIN OF THOLEIITIC DIFFERENTIATION PRODUCTS IN THE ANDEAN SOUTHERN VOLCANIC ZONE (SVZ): RESULTS FROM LLAIMA AND LONQUIMAY VOLCANOES
DUNGAN, Michael A.1, COOPER, L.B.2, REUBI, O.3, LANGMUIR, Charles H.4, TURNER, S.4, JWEDA, J.5 and GOLDSTEIN, Steven L.5, (1)Department of Geological Sciences, University of Oregon, Eugene, OR 97401, (2)Geochemistry and Petrology, ETH-Zurich, Zurich, 8092, Switzerland, (3)Department of Earth Sciences, University of Lausanne, Lausanne, 1015, Switzerland, (4)Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, (5)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, Michael.Dungan@unige.ch
5
9:15 AM
40AR/39AR DATA IDENTIFY LATE EOCENE TO EARLY OLIGOCENE MAGMATISM ON AMATIGNAK AND ULAK ISLANDS, ALEUTIAN ARC, ALASKA
SCHAEN, Allen1, JICHA, Brian R.2, SINGER, Brad S.3, KAY, Suzanne Mahlburg4 and TIBBETS, Ashley4, (1)Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, (2)Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, (3)Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, (4)EAS, Cornell University, Ithaca, NY 14853, schaen@wisc.edu
6
9:30 AM
A MAJOR PULSE OF LATE EOCENE/EARLY OLIGOCENE SUBMARINE AND SUBAERIAL MAGMATISM IN THE CENTRAL AND WESTERN ALEUTIAN ARC
JICHA, Brian R.1, KAY, Suzanne Mahlburg2, KAY, Robert W.2, TIBBETTS, Ashley2 and SINGER, Brad S.3, (1)Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, (2)EAS, Cornell University, Ithaca, NY 14853, (3)Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, bjicha@geology.wisc.edu
 
9:45 AM
Break
7
10:00 AM
MAGMATIC CONSTRAINTS ON THE TIMING OF THE THICKENING AND ECLOGITIZATION OF THE CRUST UNDER THE ARGENTINE ANDEAN CENTRAL PRECORDILLERA OVER THE CHILEAN-PAMPEAN FLATSLAB
KAY, Suzanne Mahlburg1, VERVOORT, Jeffrey2, CHEN, Chen1 and RUFFET, Gillis3, (1)EAS, Cornell University, Ithaca, NY 14853, (2)School of the Environment, Washington State University, Webster Physical Science Building 1228, Pullman, WA 99164, (3)Géosciences, Université de Rennes, Rennes, 35042, France, smk16@cornell.edu
8
10:20 AM
MESOZOIC MAGMATIC FLUXES, NORTHERN CHILE
GIRARDI, James D. and BARTON, Mark D., Dept. of Geosciences, University of Arizona, Tucson, AZ 85721, jgirardi@email.arizona.edu
9
10:35 AM
DOCUMENTING THE TRANSITION FROM ARC FLARE-UP TO TYPICAL ARC MAGMATISM AT THE PURICO-CHASCON VOLCANIC SYSTEM, NORTHERN CHILE: A CRYSTAL-SCALE PERSPECTIVE
BURNS, Dale H., College of Earth, Oceanic, and Atmosperic Sciences, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, DE SILVA, Shan, Department of Geosciences, Oregon State University, Wilkinson Hall 104, Corvallis, OR 97331 and TEPLEY, Frank, Marine Geology & Geophysics, Oregon State University, Corvallis, OR 97331-5503, burnsd@geo.oregonstate.edu
10
10:50 AM
MULTI-STAGE MIXING FOLLOWING ASSIMILATION-FRACTIONAL CRYSTALLIZATION AT CERRO UTURUNCU, ANDEAN CENTRAL VOLCANIC ZONE, SW BOLIVIA AS REVEALED FROM IN SITU LASER ABLATION ISOTOPIC ANALYSES OF PLAGIOCLASE
MICHELFELDER, Gary S., Department of Geology, Geography and Planning, Missouri State University, 901 S. National Ave, Springfield, MO 65807 and FEELEY, Todd, Department of Earth Sciences, Montana State University, 200 Traphagen Hall, Bozeman, MT 59717, garymichelfelder@missouristate.edu
 
11:05 AM
Worner Tribute
11
11:10 AM
ANDEAN MAGMATISM FROM CRUSTAL TO CRYSTAL SCALE
WÖRNER, Gerhard, GZG, University of Göttingen, Abt. Geochemie, Goldschmidtstr. 1, Göttingen, 37077, Germany, Gwoerne@gwdg.de
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