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Session No. 244
Wednesday, 3 November 2010: 8:00 AM-12:00 PM
Lobby F (Colorado Convention Center)

T153. Initiation and Termination of Subduction: Rock Record, Geodynamic Models, Modern Plate Boundaries I

GSA International Section; GSA Structural Geology and Tectonics Division; GSA Geophysics Division; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division

 

John Wakabayashi, John W. Shervais and Yildirim Dilek, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
INITIATION AND TERMINATION OF SUBDUCTION: PREDICTIONS FROM NUMERICAL MODELS
GERYA, Taras, NIKOLAEVA, Ksenia, DURETZ, Thibault and ARMANN, Marina, Institute of Geophysics, ETH Zentrum, Sonneggstrasse 5, Zürich, 8092, Switzerland, taras.gerya@erdw.ethz.ch, taras.gerya@erdw.ethz.ch
2
8:25 AM
TO UNDERSTAND SUBDUCTION INITIATION, STUDY FOREARC CRUST. TO UNDERSTAND FOREARC CRUST, STUDY OPHIOLITES
STERN, Robert, Geosciences Department, University of Texas at Dallas, 800 W. Campbell Road, Richardson TX 75080-3021, Texas, TX TX 75080-302, REAGAN, Mark K., Geoscience, University of Iowa, Iowa City, IA 52242, ISHIZUKA, Ozamu, Institute of Geoscience and Geoinformation, Geological Survey of Japan/AIST, Central 7, 1-1-1, Higashi, Tsukuba, Ibaraki, 305-8567, Japan, OHARA, Yasuhiko, Hydrographic and Oceanographic Dept. of Japan, Tokyo, 104-0045, Japan and WHATTAM, Scott, Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Balboa, Ancon, DC, Panama, rjstern@utdallas.edu, rjstern@utdallas.edu
3
8:45 AM
SPONTANEOUS SUBDUCTION INITIATION AND FOREARC MAGMATISM AS REVEALED BY PHANEROZOIC SUPRASUBDUCTION ZONE OPHIOLITES
DILEK, Yildirim, Department of Geology, Miami University, 116 Shideler Hall, Patterson Avenue, Oxford, OH 45056 and FURNES, Harald, Department of Earth Science & Centre for Geobiology, University of Bergen, Allegaten 41, Bergen, 5007, Norway, dileky@muohio.edu, dileky@muohio.edu
4
9:00 AM
EARLY EVOLUTION OF THE MARIANA FORE-ARC NEAR GUAM
REAGAN, Mark K., Geoscience, University of Iowa, Iowa City, IA 52242, OHARA, Yasuhiko, Hydrographic and Oceanographic Dept. of Japan, Tokyo, 104-0045, Japan, ISHIZUKA, Ozamu, Institute of Geoscience and Geoinformation, Geological Survey of Japan/AIST, Central 7, 1-1-1, Higashi, Tsukuba, Ibaraki, 305-8567, Japan and STERN, Robert, Department of Geosciences, University of Texas at Dallas, 800 W Campbell Ave, Richardson, TX 75083-0688, mark-reagan@uiowa.edu, mark-reagan@uiowa.edu
5
9:15 AM
SUPRA-SUBDUCTION ZONE PROTOLITH SIGNATURES IN METAMORPHIC SOLES, INITIATION OF SUBDUCTION, AND MODELS OF OPHIOLITE GENERATION AND EMPLACEMENT
WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, GHATAK, Arundhuti, Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627 and BASU, Asish R., Earth and Environmental Sciences, University of Rochester, 227, Hutchison Hall, Rochester, NY 14627, jwakabayashi@csufresno.edu, jwakabayashi@csufresno.edu
6
9:30 AM
ELEMENTAL MOBILITY IN SUBDUCTION METAMORPHISM: INSIGHT FROM METAMORPHIC ROCKS OF THE FRANCISCAN COMPLEX AND FEATHER RIVER ULTRAMAFIC BELT, CALIFORNIA
GHATAK, Arundhuti, Earth and Environmental Sciences, Indian Institute of Science Education and Research, Bhopal, 462023, India, BASU, Asish R., Earth and Environmental Sciences, University of Rochester, 227, Hutchison Hall, Rochester, NY 14627 and WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, asish.basu@rochester.edu, asish.basu@rochester.edu
7
9:45 AM
THE ARCHEAN PLUME-TO-TRENCH TRANSITION AND CRUSTAL GROWTH
WOODEN, J.L., Stanford University, Stanford, CA 94305, MUELLER, Paul A., Department of Geological Sciences, University of Florida, Gainesville, FL 32611, MOGK, D.W., Dept. Earth Sciences, Montana State Univ, Bozeman, MT 59717 and HENRY, D.J., Dept. of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, jwooden@stanford.edu, jwooden@stanford.edu
 
10:00 AM
Break
8
10:15 AM
WHEN DID FORMATION/ACCRETION OF THE FRANCISCAN COMPLEX BEGIN AND WHEN DID IT END?
ERNST, W.G., Geological and Environmental Sciences, Stanford University, Building 320, Room 118, Stanford, CA 94305-2115, wernst@stanford.edu, wernst@stanford.edu
9
10:30 AM
INITIATION OF PROTO-FRANCISCAN SUBDUCTION ALONG A TRANSFORM FAULT ZONE: EVIDENCE FROM SERPENTINITE MELANGE OF THE COAST RANGE OPHIOLITE COMPLEX
SHERVAIS, John W., Department of Geology, Utah State University, 4505 Old Main Hill, Logan, UT 84322-4505, CHOI, Sung Hi, Dept of Earth and Environmental Sciences, Chungnam National University, Daejeon, 305-764, South Korea, JEAN, Marlon M., Geology and Environmental Sciences, Northern Illinois University, Davis Hall 312, Normal Rd, DeKalb, IL 60115 and MUKASA, Samuel B., College of Engineering and Physical Sciences, University of New Hampshire, Durham, NH 03824, john.shervais@usu.edu, john.shervais@usu.edu
10
10:45 AM
SUBDUCTION INITIATION ALONG THE CALIFORNIA PLATE MARGIN: TIMING AND THERMAL EVOLUTION OF THE FRANCISCAN COMPLEX
WOODRUFF, William, Geological Sciences, University of Texas at Austin, Austin, TX 78712 and UKAR, Estibalitz, Bureau of Economic Geology, University of Texas at Austin, Austin, TX 78713, woodruff@mail.utexas.edu, woodruff@mail.utexas.edu
11
11:00 AM
EOCENE RIDGE SUBDUCTION AND TERMINATION OF THE NORTH CASCADES MAGMATIC ARC, WASHINGTON
MILLER, Robert B., Geology, San Jose State University, San Jose, CA 95192-0102, BOWRING, Samuel A., Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, TEPPER, J.H., Geology Dept, University of Puget Sound, 1500 N. Warner, Tacoma, WA 98416, UMHOEFER, Paul J., School of Earth Sciences & Environmental Sustainability, Northern Arizona University, 625 Knoles Drive, Box 4099, Flagstaff, AZ 86011 and MCLEAN, Noah, Earth, Atomospheric, and Planetary Sciences, MIT, 77 Massachusetts Ave, Cambridge, MA 02139, rmiller@geosun.sjsu.edu, rmiller@geosun.sjsu.edu
12
11:15 AM
IMPLICATIONS OF EOCENE SUBDUCTION REFRIGERATION OF SOUTHERN BAJA FOR THE LATE MIOCENE GEOTHERM DURING INITIAL RIFTING OF THE GULF OF CALIFORNIA
LOVERA, Oscar M., Dept. of Earth, Planetary and Space Sciences, Univ. of California, Los Angeles, CA 90095-1567, GROVE, Marty, Department of Geological Sciences, Stanford University, Stanford, CA 94305, KIMBROUGH, David L., Department of Geological Sciences, San Diego State University, San Diego, CA 92182 and PETERMAN, Emily M., Department of Geological and Environmental Sciences, Stanford University, 450 Serra Mall, Bldg. 320, Stanford, CA 94305, lovera@ucla.edu, lovera@ucla.edu
 
11:30 AM
Discussion
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