2009 Portland GSA Annual Meeting (18-21 October 2009)

Session No. 65
Sunday, 18 October 2009: 1:30 PM-5:30 PM
E143/144 (Oregon Convention Center)

T81. Multidisciplinary Studies of Cascade Volcanism and its Tectonic Setting II

Mineralogical Society of America; GSA Structural Geology and Tectonics Division; GSA Geophysics Division

 

Mariek Schmidt, Michael Rowe, Brian Jicha, Martin Streck, Roger Nielsen and Thomas W. Sisson, Advocates
Paper #
Start Time
1
1:30 PM
MIXING COMPONENTS AND HYBRIDIZATION PROCESSES OF KALAMA PERIOD INTERMEDIATE MAGMAS FROM MOUNT ST. HELENS: EVIDENCE FROM MAFIC PHENOCRYSTS
CARROLL, Karen R., Department of Geology, Portland State University, PO Box 751, Portland, OR 97207, STRECK, Martin J., Department of Geology, Portland State University, PO Box 751, Portland, 97207, PALLISTER, John S., USGS Cascades Volcano Observatory, 1300 Cardinal Court, Suite 100, Vancouver, WA 98683 and LEEMAN, William P., Earth Science Division, National Science Foundation, 4201 Wilson Blvd, Arlington, VA 22230, kcarroll724@yahoo.com, kcarroll724@yahoo.com
2
1:45 PM
PLUTONIC BEHAVIOR OF A CASCADE ARC VOLCANO: THE ZIRCON RECORD OF THE MOUNT ST. HELENS MAGMATIC SYSTEM
CLAIBORNE, Lily L.1, MILLER, Calvin F.1, CLYNNE, Michael A.2, WOODEN, Joseph L.3 and FLANAGAN, Daniel M.1, (1)Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, (2)Volcano Hazards Team, USGS, Menlo Park, CA 94025, (3)Geological and Environmental Sciences, Stanford University, Stanford, CA 94305, lily.e.lowery@vanderbilt.edu, lily.e.lowery@vanderbilt.edu
3
2:00 PM
FOREARC VOLCANISM IN CASCADIA: THE BORING VOLCANIC FIELD
EVARTS, Russell C., U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025, CONREY, Richard M., GeoAnalytical Lab, SEES, Washington State University, Pullman, WA 99164, FLECK, Robert J., U. S. Geological Survey, 345 Middlefield Road, MS 937, Menlo Park, CA 94025 and HAGSTRUM, Jonathan, U.S. Geological Survey, 345 Middlefield Road MS 937, Menlo Park, CA 94025, revarts@usgs.gov, revarts@usgs.gov
4
2:15 PM
A PETROLOGIC OVERVIEW OF THE BORING VOLCANIC FIELD, CASCADE RANGE, USA
CONREY, Richard M., GeoAnalytical Lab, SEES, Washington State University, Pullman, WA 99164, EVARTS, Russell C., U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025, LEEMAN, William P., Earth Science Division, National Science Foundation, 4201 Wilson Blvd, Arlington, VA 22230, STRECK, Martin J., Dept. of Geology, Portland State University, Portland, OR 97207 and FLECK, Robert J., U. S. Geological Survey, 345 Middlefield Road, MS 937, Menlo Park, CA 94025, conrey@mail.wsu.edu, conrey@mail.wsu.edu
5
2:30 PM
MINERALOGICAL EVIDENCE FOR MAGMA SOURCES, MIXING AND ASCENT OF BASALTIC TO ANDESITIC LAVAS OF THE BORING VOLCANIC FIELD (BVF), PORTLAND BASIN, OREGON
STRECK, Martin J.1, SMITH, Robin S.1, CONREY, Richard M.2, EVARTS, Russell C.3 and LEEMAN, William P.4, (1)Department of Geology, Portland State University, Portland, OR 97207, (2)GeoAnalytical Lab, SEES, Washington State University, Pullman, WA 99164, (3)U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025, (4)Earth Science Division, National Science Foundation, 4201 Wilson Blvd, Arlington, VA 22230, streckm@pdx.edu, streckm@pdx.edu
6
2:45 PM
GEOCHEMICAL AND ISOTOPIC EVIDENCE FOR DIFFERENTIATION AND ASSIMILATION IN THE ORIGIN OF MOUNT RAINIER'S CALC-ALKALINE ANDESITIC SUITE
SISSON, Thomas W., Volcano Hazards, USGS, 345 Middlefield Road, Mail Stop 910, Menlo Park, CA 94025, SALTERS, Vincent J., Geological Sciences, Florida State University & National High Magnet Field Laboratory, B302 NHMFL FSU, 1800 E. Paul Dirac Dr, Tallahassee, FL 32310-3706, LARSON, Peter, Department of Geology, Washington State University, Pullman, WA 99164 and RYE, Robert O., USGS-DIAL, Box 25046, MS 963, Denver, CO 80225, tsisson@usgs.gov, tsisson@usgs.gov
7
3:00 PM
ORIGIN AND GEOCHEMICAL EVOLUTION OF MAFIC MAGMAS FROM MOUNT BAKER IN THE NORTHERN CASCADE ARC, WASHINGTON: PROBES INTO MANTLE AND CRUSTAL PROCESSES
MOORE, N.E., Geology Department, Western Washington University, M.S. 9080, Bellingham, WA 98225 and DEBARI, S.M., Geology, Western Washington University, M.S. 9080, Bellingham, WA 98225, nmoore16@comcast.net, nmoore16@comcast.net
8
3:15 PM
MORPHOLOGY OF MOUNT BAKER'S CARMELO (SUMMIT) CRATER REVEALED BY ICE-PENETRATING RADAR
TUCKER, David S., Mount Baker Volcano Research Center; Geology Department, Western Washington University, 516 High Street, Bellingham, WA 98225, DRIEDGER, Carolyn L., Cascade Volcano Observatory, U.S. Geological Survey, Bldg 10, Suite 100, 1300 SE Cardinal Court, Vancouver, WA 98683, NERESON, Nadine, Philips Medical Systems Ultrasound, 22100 Bothell Everett Highway, Bothell, WA 98021-8434, CONWAY, Howard, Earth and Space Sciences & Quaternary Research Center, University of Washington, 63 Johnson Hall, Box 351310, Seattle, WA 98195 and SCURLOCK, John, P.O. Box 85, Concrete, WA 98237, tuckerd@geol.wwu.edu, tuckerd@geol.wwu.edu
 
3:30 PM
Discussion
See more of: Technical Sessions