North-Central Section - 42nd Annual Meeting (24–25 April 2008)
Session No. 4 Thursday, 24 April 2008
7:55 AM-12:00 PM, Casino Aztar Conference Center: Walnut C

T1. Volatiles in Magmas: From Source to Surface

James Walker and Jim Brophy, Presiding
 Paper #Start Time
 7:55 AM Introductory Remarks
4-18:00 AM VOLATILES IN MAGMAS: FROM SOURCE TO SURFACE: FISCHER, Tobias P., Earth and Planetary Sciences, Univ of New Mexico, 200 Yale Blvd NE, Northrop Hall, Albuquerque, NM 87131, fischer@unm.edu
4-28:20 AM CONSTRAINTS ON MIXED-FLUID (H2O AND CO2) SOLUBILITY IN ARC BASALTS: NEW EXPERIMENTS REQUIRE NEW MODELS: ROGGENSACK, Kurt, School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, AZ 85287-1404, kurt.roggensack@asu.edu, MOORE, Gordon, Department of Chemistry and Biochemistry, Arizona State University, Box 1604, Tempe, AZ 85287-1604, and HERVIG, Richard L., Arizona State Univ, PO Box 871704, Tempe, AZ 85287-1704
4-38:40 AM CONSTRAINTS ON THE CENTRAL AMERICAN SLAB FLUID COMPOSITION FROM ARC MELT INCLUSIONS AND PHENOCRYSTS: WADE, Jennifer A., Earth Sciences, Boston University, 675 Commonwealth Ave, Boston, MA 02215, volcanicjenn@gmail.com and PLANK, Terry A., Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964
4-49:00 AM VOLATILE CONTENTS AND DEGASSING OF PRIMITIVE MAGMAS FROM THE WESTERN MEXICAN VOLCANIC BELT: MARIA, Anton H., Geology and Physics, Univ Southern Indiana, 8600 University Blvd, Evansville, IN 47712, ahmaria@usi.edu and LUHR, James F., Smithsonian Inst, NHB-119, Washington, DC 20560-0001
4-59:20 AM PYROXENE AND PLAGIOCLASE COMPOSITIONS AS AN INDICATOR OF MAGMATIC WATER CONCENTRATIONS: TWO HYGROMETERS: LANGE, Rebecca A., Ann Arbor, MI 48109-1005, becky@umich.edu and FREY, Holli M., Department of Geology, Union College, 807 Union St, Schenectady, NY 12308-1307
 9:40 AM Break
4-610:00 AM DEGASSING-INDUCED CRYSTALLIZATION IN PERIPHERAL, CRYSTAL-POOR BASALTIC ANDESITE, ANDESITE AND DACITE FLOWS IN WESTERN MEXICO: CRABTREE, Stephen M., Geological Sciences, University of Michigan, 1100 North University Ave, Ann Arbor, MI 48109-1005, smcrabtr@umich.edu and LANGE, Rebecca A., Department of Geological Sciences, Univ Michigan, 1100 North University Ave, Ann Arbor, MI 48109-1005
4-710:20 AM THE VISCOSITY OF HYDROUS DACITIC LIQUIDS: IMPLICATIONS FOR THE RHEOLOGY OF EVOLVING SILICIC MAGMAS: WHITTINGTON, Alan1, HELLWIG, Bridget1, BEHRENS, Harald2, JOACHIM, Bastian2, STECHERN, André2, and VETERE, Francisco3, (1) Department of Geological Sciences, University of Missouri, Columbia, MO 65211, whittingtona@missouri.edu, (2) Institut für Mineralogie, Universität Hannover, Callinstraße 3, Hannover, D-30167, Germany, (3) Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, Roma, 00143, Italy
4-810:40 AM PHENOCRYST ZONING: FRACTURE VERSUS RESORPTION: ANDERSON, Alfred T., Geophysical Sciences, University of Chicago, 5734 S. Ellis Ave, Department of Geophysical Sciences, Chicago 60637, canderso@uchicago.edu
4-911:00 AM GOLD, COPPER AND IRON PARTITIONING BETWEEN VAPOR, BRINE AND MELT: FRANK, Mark R., Department of Geology and Environmental Geosciences, Northern Illinois University, Davis Hall, Room 312, DeKalb, IL 60115, mfrank@niu.edu
4-1011:20 AM VOLCANIC SOIL GAS DIFFUSING AT ZUNIL-CERRO QUEMADO-SANTA MARIA VOLCANIC COMPLEX, GUATEMALA: LOPEZ, Dina L.1, WALKER, James2, BARAHONA, Francisco3, CARTAGENA, Rafael3, FUNES, Carlos Renan3, FINIZOLA, Anthony4, and LAURA, Bennati4, (1) Geological Sciences, Ohio Univ, 316 Clippinger Laboratories, Athens, OH 45701, lopezd@ohio.edu, (2) Department of Geology and Geophysics, Northern Illinois Univ, DeKalb, IL 61115, (3) Physics, Universidad de El Salvador, San Salvador, none, El Salvador, (4) Laboratoire Géosciences Réunion, 97715 Saint Denis cedex 9, La Réunion, none, France
 11:40 AM Concluding Remarks

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