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| 18-1 | 1:30 PM | "DETRITAL" ZIRCONS ORIGINATING BY MAGMATIC EROSION OF PRE-EXISTING INTRUSIONS AT THE SOUFRIÈRE VOLCANIC CENTER (SAINT LUCIA, LESSER ANTILLES): SCHMITT, Axel K.1, MCCAMMON, Miles1, STOCKLI, Daniel F.2, and LINDSAY, Jan M.3, (1) Earth and Space Sciences, University of California, 595 Charles Young Dr E, Los Angeles, CA 90095, axel@argon.ess.ucla.edu, (2) Department of Geology, University of Kansas, 120 Lindley Hall, Lawrence, KS 66045-761, (3) School of Geography, Geology, and Environmental Science, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand |
| 18-2 | 1:50 PM | THE UPPER CRUSTAL EVOLUTION OF AN ERUPTED BATHOLITH: EVIDENCE FROM CRYSTAL-SCALE RB/SR ISOTOPIC HETEROGENEITIES IN THE FISH CANYON MAGMATIC SYSTEM, COLORADO: BACHMANN, Olivier, Earth Space Sciences, University of Washington, Box 351310, Seattle, WA 98195-1310, bachmano@u.washington.edu, CHARLIER, Bruce, Departement of Earth Sciences, Open University, Walton Hall, Milton Keynes, MK7 6AA, England, DAVIDSON, Jon, Earth Sciences, University of Durham, Durham, DH1 3LE, United Kingdom, DUNGAN, Michael A., Section des Sciences de la Terre, Université de Genève, 13, rue des Maraichers, Genève, 1205, Switzerland, and MORGAN, Dan J., School of Earth and Environment, University of Leeds, Earth Science building, Leeds, LS2 9JT, England |
| 18-3 | 2:10 PM | USING COMBINED GEOCHEMICAL AND TEXTURAL QUANTIFICATION OF CRYSTAL POPULATIONS TO CONSTRAIN MAGMA CHAMBER PROCESSES IN SILICIC VOLCANOES: AN EXAMPLE FROM MOUNT HOOD, OREGON: DARR, Cristina M. and KENT, Adam J. R., Department of Geosciences, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, adam.kent@geo.oregonstate.edu |
| 18-4 | 2:30 PM | ALLANITE AND CHEVKINITE AS ABSOLUTE CHRONOMETERS OF RHYOLITE DIFFERENTIATION: VAZQUEZ, Jorge A., Geological Sciences, California State University Northridge, 18111 Nordhoff Street, Los Angeles, CA 91330, jvazquez@csun.edu |
| | 2:50 PM | Break |
| 18-5 | 3:10 PM | HIGH-PRECISION CHRONOLOGIES OF MAGMA CHAMBER DYNAMICS: ID-TIMS U-PB DATING OF SMALL CHEMICAL DOMAINS: CROWLEY, James1, BOWRING, Samuel2, and SCHMITZ, Mark1, (1) Department of Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725, JimCrowley@boisestate.edu, (2) Dept. Earth, Atm. & Planet. Sci, Massachusetts Institute of Technology, Cambridge, MA 02139 |
| 18-6 | 3:30 PM | THE SPIRIT MOUNTAIN BATHOLITH AND SECRET PASS CANYON VOLCANIC CENTER: PERSPECTIVES ON SILICIC MAGMATISM FROM THE MID TO UPPER CRUST: WALKER, Barry A. Jr1, LANG, Nicholas P.2, CLAIBORNE, Lily L.3, MILLER, Calvin F.3, and HAZLETT, Richard W.4, (1) Geosciences, Oregon State University, Corvallis, OR 97330, walkerb@geo.oregonstate.edu, (2) Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, (3) Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, (4) Geology, Pomona College, Claremont, CA 91711 |
| 18-7 | 3:50 PM | CONNECTING HIGH-SILICA, RHYOLITE-HOSTED PHENOCRYSTS TO POTENTIAL CRYSTAL MUSH INTRUSIVE COMPLEMENTS: INSIGHTS FROM BAITOUSHAN VOLCANO AND VALLES CALDERA: RAMOS, Frank C., Geological Sciences, Central Washington University, 400 East University Way, Ellensburg, WA 98926, ramos@geology.cwu.edu, GILL, James B., Department of Earth Sciences, University of California, Santa Cruz, Earth and Marines Sciences Building, EMS Bldg A232, Santa Cruz, CA 95064, WOLFF, John, School of Earth & Environmental Sciences, Washington State University, Pullman, WA 99164, and RODGERS, Sarah L., Department of Geological Sciences, Central Washington University, 400 E University Way, Ellensburg, WA 98926 |
| 18-8 | 4:10 PM | HETEROGENEOUS KFS MEGACRYST SIZE AND ABUNDANCE VARIATION IN THE NORTHERN CATHEDRAL PEAK LOBE, TUOLUMNE BATHOLITH: MEMETI, Vali and PATERSON, Scott, Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, memeti@usc.edu |
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