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2004 Denver Annual Meeting (November 7–10, 2004)

Session No. 101
Monday, 8 November 2004: 1:30 PM-5:30 PM

Igneous Petrology

 

Holli M. Frey and Asish R. Basu, Chairs
Paper #
Start Time
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1:30 PM
Withdrawn
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1:45 PM
QUANTITATIVE 3D PETROGRAPHY USING X-RAY TOMOGRAPHY: APPLICATION TO BISHOP TUFF PUMICE CLASTS
GUALDA, Guilherme A.R., The Department of the Geophysical Sciences, The Univ of Chicago, 5734 S. Ellis Ave, Chicago, IL 60637 and RIVERS, Mark, Consortium for Advanced Radiation Sources, The Univ of Chicago, Building 434A, 9700 South Cass Ave, Argonne, IL 60439, ggualda@uchicago.edu, ggualda@uchicago.edu
3
2:00 PM
ORIGIN OF FIBROUS AMPHIBOLES IN THE IRON HILL CARBONATITE COMPLEX, GUNNISON COUNTY, COLORADO
LOWERS, H.A.1, HARRISON, W.J.1, WENDLANDT, R.F.1 and MEEKER, G.P.2, (1)Geochemistry, Colorado School of Mines, Golden, CO 80401, (2)U.S. Geol Survey, Denver, CO 80225, hlowers@mines.edu, hlowers@mines.edu
4
2:15 PM
INFERENCES ON NORTHWESTERN U.S. MANTLE ARCHITECTURE FROM GEOCHRONOLOGIC AND ISOTOPIC STUDIES OF OWYHEE PLATEAU BASALTIC VOLCANISM
SHOEMAKER, Kurt A., Geology Dept, Saint Joseph's College, PO Box 877, Rensselaer, IN 47978 and HART, William K., Geology Dept, Miami Univ, 114 Shideler Hall, Oxford, OH 45056, kurts@saintjoe.edu, kurts@saintjoe.edu
5
2:30 PM
RESOLVING QUESTIONS OF CONSANGUINITY BETWEEN THE LATE ORDOVICIAN DEICKE, MILLBRIG AND KINNEKULLE K-BENTONITES IN NORTH AMERICA AND BALTOSCANDIA
HUFF, Warren D., Department of Geology, Univ of Cincinnati, Cincinnati, OH 45221-0013, MUFTUOGLU, Elif, Ugur Mumcu Cad. Ugur, Mumcu'nun Sok. 42/1 GOP, Ankara, 06700, Turkey, BERGSTROM, Stig M., School of Earth Sciences, The Ohio State University, Columbus, OH 43210-1308 and KOLATA, Dennis R., Illinois State Geological Survey, 615 E. Peabody Drive, Champaign, IL 61820, warren.huff@uc.edu, warren.huff@uc.edu
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2:45 PM
VARIABILITY IN BIOTITE COMPOSITION AMONG FOUR ORDOVICIAN TEPHRAS, AND COMPARISON WITH CENOZOIC VOLCANIC BIOTITES TO CONSTRAIN TECTONOMAGMATIC SETTING
HAYNES, John T.1, MELSON, William G.2 and O'HEARN, Timothy2, (1)Geology & Geophysics, Univ of Connnecticut, Storrs, CT 06269-2045, (2)Smithsonian Inst, NHB-119, Washington, DC 20560-0119, john.haynes@uconn.edu, john.haynes@uconn.edu
 
3:00 PM
Break
7
3:15 PM
PLAGIOCLASE GROWTH IN CRYSTAL-RICH VS. CRYSTAL-POOR LAVAS IN THE V. TEQUILA VOLCANIC FIELD, MEXICO
FREY, Holli M., Department of Geological Sciences, Univ Michigan, 425 E University, Ann Arbor, MI 48109 and LANGE, Rebecca A., Department of Earth and Environmental Sciences, Univ Michigan, 425 E University, Ann Arbor, MI 48109, hfrey@umich.edu, hfrey@umich.edu
8
3:30 PM
WATER IN PLAGIOCLASE FELDSPAR IN BASALTIC TO RHYOLITIC ROCKS
SEAMAN, Sheila J.1, KESKULA-SNYDER, Anna1, LOW, Paul C.2, SHETH, Hetu3, MARTIN, Bart S.4 and TRUMBULL, Robert B.5, (1)Geosciences, Univ of Massachusetts, Morrill Science Center, Amherst, MA 01003, (2)Department of Geosciences, Univ of Massachusetts-Amherst, 233 Morrill Science Center, 611 North Pleasant Street, Amherst, MA 01003, (3)Department of Earth Sciences, Indian Institute of Technology, Bombay, India, (4)Geology and Geography, Ohio Wesleyan Univ, Delaware, OH 43015, (5)Geoforschung Zentrum, Telegrafenberg A-50, Potsdam, 14473, Germany, sjs@geo.umass.edu, sjs@geo.umass.edu
9
3:45 PM
MAGMA MIXING INDICATED BY FELDSPAR ZONATION PATTERNS IN MIOCENE RHYOLITIC AND TRACHYTIC FLOWS FROM THE MONANGORIVO VOLCANIC SEQUENCE, NORTHERN MADAGASCAR
BUCHWALDT, Robert, Department of Earth and Planetary Sciences, Washington Univ, St. Louis, MO 63130, TUCKER, Robert D., Department of Earth and Planetary Sciences, Washington Univ, St Louis, MO 63130 and DYMEK, Robert F., Department of Earth and Planetary Sciences, Washington Univ, Saint Louis, MO 63130, buchwaldt@levee.wustl.edu, buchwaldt@levee.wustl.edu
10
4:00 PM
RB/SR AND SM/ND SYSTEMATICS OF TWO MIXED MAGMA SYSTEMS FROM THE COASTAL MAINE MAGMATIC PROVINCE
LUX, Daniel R.1, HOOKS, Benjamin1, GIBSON, David2 and ELLAM, Robert M.3, (1)Earth Sciences, Univ of Maine, 5790 Bryand Global Sciences Center, University of Maine, Orono, ME 04469, (2)Department of Natural Sciences - Geology, Univ of Maine at Farmington, 173 High Street, Farmington, ME 04938, (3)Isotope Geology Unit, Scottish Universities Environmental Research Centre, East Kilbride, dlux@maine.edu, dlux@maine.edu
11
4:15 PM
ISOTOPIC AND GEOPHYSICAL CONSTRAINTS ON THE STRUCTURE AND EVOLUTION OF THE CLEAR LAKE VOLCANIC FIELD
HAMMERSLEY, Lisa, Department of Geology, California State Univ, Sacramento, 6000 J Street, Sacramento, CA 95819 and DEPAOLO, D.J., Department of Earth and Planetary Science, Univ of California, Berkeley, Berkeley, CA 94720, hammersley@csus.edu, hammersley@csus.edu
12
4:30 PM
SPINIFEX-KOMATIITE LAVA FLOWS, 3.5 GA KOMATI FORMATION, SOUTH AFRICA
DANN, Jesse, Boston Univ, Boston, MA 02215, jcdann@bu.edu, jcdann@bu.edu
13
4:45 PM
TRACE ELEMENT AND ND-HF-SR-PB GEOCHEMISTRY OF PROTEROZOIC LAMPROITES FROM THE SOUTHERN INDIAN CRATON
BASU, Asish R., Department of Earth and Environmental Sciences, Univ of Rochester, 227 Hutchison Hall, Rochester, NY 14627, CHAKRABARTI, Ramananda, Earth and Environmental Sciences, Univ of Rochester, 227 Hutchison Hall, Rochester, NY 14627 and PAUL, Dalim K., Geology, Presidency College, 86/1 College Street, Calcutta, 700073, India, abasu@earth.rochester.edu, abasu@earth.rochester.edu
14
5:00 PM
GRANITES BY REPLACEMENT FAR FROM EQUILIBRIUM BY REACTION CELLS; GRANITIC MINERALS MODIFIED TO PORPHYROBLASTS OF ORTHOCLASE AND QUARTZ NEAR TO EQUILIBRIUM BY STRESS
DICKSON, F.W., Geological Sciences, Univ of Nevada, Reno, Reno, NV 89557, fdickson@mines.unr.edu, fdickson@mines.unr.edu
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5:15 PM
MAGMA CHAMBERS AS DEPOSITIONAL SYSTEMS
MILLER, Calvin F.1, FURBISH, David J.2, BLEICK, Heather A.1, KOTEAS, G. Christopher1, WALKER, Barry A.1 and MILLER, Jonathan S.3, (1)Dept. of Geology, Vanderbilt Univ, Nashville, TN 37235, (2)Department of Earth and Environmental Sciences, Vanderbilt University, SC 5717 Sci. & Engr. Bldg, Stevenson Center Lane, Nashville, TN 37240, (3)Department of Geology, San Jose State Univ, San Jose, CA 95192, Calvin.Miller@Vanderbilt.edu, Calvin.Miller@Vanderbilt.edu
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