Cordilleran Section (104th Annual) and Rocky Mountain Section (60th Annual) Joint Meeting (19–21 March 2008)

Session No. 14
Thursday, 20 March 2008: 8:00 AM-11:30 AM

S3. Mafic-Silicic Magmatism: Crystallization Histories, Magma Interactions, and Eruption Mechanisms I

 

Terry L. Spell and Eugene Smith, Conveners
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
MECHANISMS OF MAFIC DISAGGREGATION IN A CRYSTAL-RICH GRANITIC MUSH AT AZTEC WASH PLUTON, NV
BANIK, Tenley J., MILLER, Calvin F. and FURBISH, David Jon, Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, tenley.banik@vanderbilt.edu, tenley.banik@vanderbilt.edu
2
8:25 AM
THE ROLE OF BASALT IN ERUPTION OF QUATERNARY RHYOLITES NORTH OF THE YELLOWSTONE CALDERA
SPELL, Terry L., WOOTON, Katie, NASTANSKI, Nicole M. and SMITH, Eugene I., Department of Geoscience, Univ of Nevada, Las Vegas, 4505 Maryland Parkway, Las Vegas, NV 89154, terry.spell@unlv.edu, terry.spell@unlv.edu
3
8:45 AM
SMALL PROPORTIONS OF REFILL BUT LARGE PROPORTIONS OF MIXING BETWEEN MAFIC AND SILICIC MAGMAS IN SHALLOW MAGMA CHAMBERS
BINDEMAN, Ilya, Geological Sciences, University of Oregon, Eugene, OR 97403, bindeman@uoregon.edu, bindeman@uoregon.edu
4
9:05 AM
THE PHYSICAL IMPACT OF MAFIC REPLENISHMENTS ON SILICIC MAGMA CHAMBERS IN THE VINALHAVEN INTRUSIVE COMPLEX, MAINE, USA
WIEBE, Robert A., Earth and Environment, Franklin and Marshall College, Lancaster, PA 176043003, HAWKINS, David P., Department of Geosciences, Denison University, Granville, OH 43023, SNYDER, Don, RAND Corporation, 1776 Main Street, Santa Monica, CA 90407-2138 and WARK, David A., GE Global Research, One Research Circle, Niskayuna, NY 12309, bwiebe@fandm.edu, bwiebe@fandm.edu
5
9:25 AM
IN SITU MECHANICAL AND DIFFUSIVE MIXING IN AZTEC WASH PLUTON, NV: EVIDENCE FROM ZIRCON TI THERMOMETRY AND ELEMENTAL ZONING
BROMLEY, S. Ashley1, BLEICK, Heather A.1, ERICKSEN, Shelly M.2, MILLER, Calvin F.1, MILLER, Jonathan S.2, CLAIBORNE, Lily L.1, WOODEN, Joseph L.3 and MAZDAB, Frank K.3, (1)Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, (2)Department of Geology, San Jose State University, San Jose, CA 95192-0102, (3)USGS-Stanford Ion Microprobe Facility, Green Building, Rm 89, 367 Panama Street, Stanford, CA 94305-2220, s.ashley.bromley@vanderbilt.edu, s.ashley.bromley@vanderbilt.edu
 
9:45 AM
Break
6
10:05 AM
RETHINKING HOW WE MAP AND DATE PLUTONS: JOHN MUIR INTRUSIVE SUITE OF THE SIERRA NEVADA BATHOLITH
COLEMAN, Drew S., Department of Geological Sciences, University of North Carolina, CB# 3315, Chapel Hill, NC 27599, GRACELY, John T., Department of Geological Sciences, Univ of North Carolina, CB# 3315, Chapel Hill, NC 27599-3315, GASCHNIG, Richard, School of Earth and Environmental Sciences, Washington State University, P.O. Box 642812, Pullman, WA 99164-2812, GLAZNER, Allen F., Dept. of Geological Sciences, Univ. of North Carolina, Chapel Hill, NC 27599-3315 and BARTLEY, John M., Department of Geology and Geophysics, Univ of Utah, 115 S. 1460 E, Rm 383 FASB, Salt Lake City, UT 84112, dcoleman@email.unc.edu, dcoleman@email.unc.edu
7
10:25 AM
MODELING PREDICTS THERMAL EVOLUTION, GEOCHEMICAL, TEXTURAL AND FIELD RELATIONS OF THE ZONED INTRUSIVE SUITES OF THE SIERRA NEVADA BATHOLITH, CALIFORNIA
DAVIS, Jesse, Department of Geological Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, COLEMAN, Drew S., Geological Sciences, University of North Carolina, Chapel Hill, NC 27599-3315 and BARTLEY, John, Department of Geology and Geophysics, Univ of Utah, 135 S. 1460 E., Rm 719, Salt Lake City, UT 84112, davisjw@email.unc.edu, davisjw@email.unc.edu
8
10:45 AM
DECLINING INTERACTIONS BETWEEN MAFIC AND FELSIC MAGMAS DURING DEVELOPMENT OF THE MOUNT WHITNEY INTRUSIVE SUITE, SIERRA NEVADA, CALIFORNIA
HIRT, William H., Natural Sciences, College of the Siskiyous, 800 College Avenue, Weed, CA 96094 and COLEMAN, Drew S., Geological Sciences, University of North Carolina, 325 Mitchell Hall, CB#3315, Chapel Hill, NC 27599, hirt@siskiyous.edu, hirt@siskiyous.edu
9
11:05 AM
VARIABLE CONTROLS ON OPEN-SYSTEM MODIFICATION OF CONTINENTAL ARC MAGMA; COPAHUE-CAVIAHUE ERUPTIVE COMPLEX, NEUQUEN ARGENTINA
TODD, Erin, Earth and Planetary Sciences, University of California, Santa Cruz, 1156 High St, Santa Cruz, CA 95064, etodd@pmc.ucsc.edu, etodd@pmc.ucsc.edu
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