Session No. 25 Wednesday, April 2, 2003

2:15 PM-4:50 PM, Hotel NH Krystal: Yelapa
Petrology and Structure of Magmatic Systems
Philip Gans and Dante Moran Zenteno, Presiding
 Paper #Start Time
25-12:15 PM CYCLIC STRATIGRAPHY IN THE AZTEC WASH PLUTON, NEVADA: VERTICAL CONSTRUCTION OF A COMPOSITE INTRUSION: COINER, Lorrie V., CATES, Nicole L., MILLER, Calvin F., and HARPER, Brian E., Dept. of Geology, Vanderbilt Univ, Nashville, TN 37235-1805, lorrie.v.coiner@vanderbilt.edu
25-22:35 PM LONGEVITY OF PLUTONIC SYSTEMS: SHRIMP EVIDENCE FROM AZTEC WASH AND SEARCHLIGHT PLUTONS, NEVADA: CATES, Nicole L.1, MILLER, Jonathan S.2, MILLER, Calvin F.1, WOODEN, Joseph L.3, ERICKSEN, Shelly2, and MEANS, Molly2, (1) Dept. of Geology, Vanderbilt Univ, Nashville, TN 37235-1805, nicole.l.cates@vanderbilt.edu, (2) Department of Geology, San Jose State Univ, San Jose, CA 95192-0102, (3) U.S. Geol Survey, 345 Middlefield Road, Menlo Park, CA 94025
25-32:55 PM GRANITE ACCUMULATION AND FRACTIONATION IN A DYNAMIC, OPEN-SYSTEM MAGMA CHAMBER, AZTEC WASH PLUTON, ELDORADO MTNS, NEVADA: HARPER, Brian E.1, MILLER, Calvin F.1, WIEBE, Robert A.2, CATES, Nicole L.1, and CRIBB, Warner3, (1) Dept. of Geology, Vanderbilt Univ, Nashville, TN 37235-1805, brian.e.harper@vanderbilt.edu, (2) Geosciences, Franklin and Marshall College, Lancaster, PA 17604-3003, (3) Geosciences, Middle Tennessee State Univ, PO Box 9, Murfreesboro, TN 37132
 3:15 PM Break
25-43:30 PM MID-MIOCENE VOLCANIC FIELD DEVELOPMENT IN NORTHERN NEVADA: NEW AGE CONSTRAINTS ON THE TIMING OF SANTA ROSA-CALICO VOLCANISM: BRUESEKE, Matthew E.1, HART, William K.1, WALLACE, Alan R.2, HEIZLER, Matthew T.3, and FLECK, Robert J.4, (1) Geology Dept, Miami Univ, 114 Shideler Hall, Oxford, OH 45056-2473, brueseme@muohio.edu, (2) US Geol Survey, MS 176, Univ. Nevada, Reno, Reno, NV 89557-0047, (3) New Mexico Bureau of Mines and Mineral Resources, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, (4) U.S. Geol Survey, 345 Middlefield Rd, Menlo Park, CA 94025
25-53:50 PM KOOLAU SHIELD BASALT AS XENOLITHS ENTRAINED DURING REJUVENATED-STAGE ERUPTIONS: PERSPECTIVES ON MAGMA MIXING: FODOR, R.V., North Carolina State Univ, Raleigh, NC 27695, rfodor@ncsu.edu, WEINSTEIN, J.P., EPA, Research Triangle Park, NC 27711, and BAUER, G.R., Dept. Land and Nat Rscs, Honolulu, HI 96813
25-64:10 PM THE EFFECTS OF PROGRESSIVE PARTIAL MELTING OF METASEDIMENTARY ROCKS ON STRAIN PARTITIONING: A CASE STUDY FROM THE SOUTHERN SIERRA NEVADA BATHOLITH, CALIFORNIA: ZENG, Lingsen and SALEEBY, Jason B., Division of Geological and Planetary Sciences, California Institute Technology, 1201 E California Blvd MC 100-23, Pasadena, CA 91125-0001, lzeng@gps.caltech.edu
25-74:30 PM EXPERIMENTAL INVESTIGATION OF FLUID PHASES IN THE SYSTEM HAPLOGRANITE-WATER-ALKALI CHLORIDE: STEINER, Jeffrey C., Department of Earth and Atmospheric Sciences, The City College of CUNY, New York, NY 10031, steiner@sci.ccny.cuny.edu and MUSTART, David A., Department of Geosciences, San Francisco State Univ, San Francisco, CA 94132, mustart@sfsu.edu

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