GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 140
Monday, 23 October 2017: 1:30 PM-5:30 PM
Skagit 4 (The Conference Center)

T162. The Dance of Arcs: Causes of Arc Migrations, Flare-Ups, and Magmatic Focusing II

GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division
Scott R. Paterson, Vali Memeti, Joshua Schwartz, Katie E. Ardill and Anita Grunder, Advocates
 
1:30 PM
Introductory Remarks
1:35 PM
A REVERSE ENERGY CASCADE FOR CRUSTAL MAGMA TRANSPORT (Invited Presentation)
KARLSTROM, Leif, Earth Sciences, University of Oregon, 1172 University of Oregon, Eugene, OR 97403, PATERSON, Scott R., Department of Earth Sciences, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089-0740 and JELLINEK, A. Mark, Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2207 Main Mall, Vancouver, BC V6T 1Z4, Canada, leif@uoregon.edu
1:55 PM
OVER-RIDING PLATE CONTROLS ON MANTLE WEDGE MELTING
YANG, Jiaming, Department of Geological Sciences and Engineering, University of Nevada, Reno, 1664 N. Virginia Street, Reno, NV 89557-0172, RUDOLPH, Maxwell L., Department of Earth and Planetary Sciences, University of California, Davis, 2119 Earth and Physical Sciences, UC Davis One Shields Avenue, Davis, CA 95616 and KARLSTROM, Leif, Earth Sciences, University of Oregon, 1172 University of Oregon, Eugene, OR 97403, jiaming@nevada.unr.edu
2:10 PM
HOT SLAB MELTS FROM OLD SUBDUCTING LITHOSPHERE: SPONTANEOUS ARC RIFTING CAUSED BY TIME-DEPENDENT EVOLUTION OF THE MANTLE WEDGE CORNER
BILLEN, Magali I., Department of Earth and Planetary Sciences, University of California, One Shields Avenue, Davis, CA 95616, mibillen@ucdavis.edu
2:25 PM
MAGMATIC EVOLUTION OF AN ACTIVE CORDILLERAN MAGMATIC FLARE-UP EPISODE (Invited Presentation)
WARD, Kevin M., Department of Geology and Geophysics, The University of Utah, Salt Lake City, UT 84112 and CAO, Wenrong, Department of Geological Sciences and Engineering, University of Nevada, Reno, Reno, NV 89557, kevin.m.ward@utah.edu
 
2:45 PM
Discussion
3:00 PM
THE PELONA–OROCOPIA–RAND AND RELATED SCHISTS OF SOUTHERN CALIFORNIA: A REVIEW OF THE BEST-KNOWN ARCHIVE OF SHALLOW-ANGLE SUBDUCTION ON THE PLANET
CHAPMAN, Alan D., Geology Department, Macalester College, 1600 Grand Ave., St. Paul, MN 55105, chapman@macalester.edu
3:20 PM
EVIDENCE FOR THREE DISTINCT METASEDIMENT EMPLACEMENT MECHANISMS IN AN ARC CRUST SECTION, SOUTHERN SIERRA NEVADA, CALIFORNIA
KLEIN, Benjamin Z.1, JAGOUTZ, Oliver2, VANTONGEREN, Jill3 and SETERA, Jacob3, (1)Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, (2)Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 54-1212, Cambridge, MA 02139, (3)Department of Earth and Planetary Sciences, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, bzklein@mit.edu
3:35 PM
LITHOSPHERIC STRUCTURE CONTROL ON CHANGES IN MAGMA SOURCE OVER TWO MAGMATIC PULSES IN THE WHITE–INYO RANGE, CA
GAMMEL, Elizabeth M., Geological Sciences, University of Missouri, 101 Geological Sciences Bldg, Columbia, MO 65211 and NABELEK, Peter, Department of Geological Sciences, University of Missouri, 101 Geological Sciences, Columbia, MO 65211, emg5y7@mail.missouri.edu
3:50 PM
CONTRIBUTION OF METASEDIMENTARY ROCKS TO SMALL SCALE MELTS WITHIN THE DEEP LEVELS OF CONTINENTAL ARCS: INSIGHT FROM THE SWAKANE AND SKAGIT METASEDIMENTARY ROCKS AND ASSOCIATED MELT GENERATIONS
GORDON, Stacia M.1, SAUER, Kirsten B.2, MILLER, Robert B.3, VERVOORT, Jeff D.4 and FISHER, Christopher M.4, (1)Department of Geological Sciences, University of Nevada- Reno, 1664 N. Virginia Street, Reno, NV 89557, (2)Department of Geological Sciences, University of Nevada-Reno, 1664 N. Virginia Street, Reno, NV 89557, (3)Geology, San Jose State University, One Washington Square, San Jose, CA 95192, (4)School of the Environment, Washington State University, Pullman, WA 99164, staciag@unr.edu
4:05 PM
GEOCHEMICAL EVIDENCE FOR THE DEVELOPMENT OF A GARNET-BEARING CRUSTAL ROOT IN THE CRETACEOUS NORTH CASCADES MAGMATIC ARC, WA
SHEA, Erin K., University of Alaska Anchorage, Anchorage, AK 99508, MILLER, Jonathan S., Department of Geology, San Jose State University, San Jose, CA 95192-0102, MILLER, Robert B., Geology, San Jose State University, One Washington Square, San Jose, CA 95192, CHAN, Christine F., U.S. Geological Survey, Geosciences and Environmental Change Science Center, DFC, Box 25046, MS 980, Denver, CO 80225 and KENT, Adam J.R., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, eshea2@alaska.edu
4:20 PM
DO MID-CRUSTAL CORDILLERAN BATHOLITHS RECORD ARC FLARE-UP TRIGGERING PROCESSES?
SCHWARTZ, Joshua J., Department of Geological Sciences, California State University Northridge, 18111 Nordhoff Street, Northridge, CA 91330, TULLOCH, Andrew J., Institute of Geol & Nuclear Sciences, 764 Cumberland St, Dunedin, New Zealand, ANDICO, S., Department of Geological Sciences, California State University Northridge, 18111 Nordhoff St., Northridge, CA 91330, STOWELL, Harold H., Geological Sciences, University of Alabama, Tuscaloosa, AL 35487, KLEPEIS, Keith A., Geology, University of Vermont, Trinity Campus, Burlington, VT 05405, KITAJIMA, Kouki, WiscSIMS, Department of Geoscience, University of Wisconsin–Madison, 1215 W. Dayton St., Madison, WI 53706 and VALLEY, John, Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53706, joshua.j.schwartz@gmail.com
4:35 PM
ALONG ARC GEOCHRONOLOGIC AND GEOCHEMICAL VARIATION OF THE URUMIEH-DOKHTAR BELT, IRAN: IMPLICATIONS FOR MAGMATIC FLARE-UP AND CRUSTAL GROWTH
PANG, Kwan-Nang1, CHUNG, Sun-Lin2, ZARRINKOUB, Mohammad Hossein3, CHIU, Han-Yi1, LEE, Hao-Yang1 and LIN, Te-Hsien4, (1)Institute of Earth Sciences, Academia Sinica, 128 Section 2 Academia Road, Taipei, 11529, Taiwan, (2)Department of Geosciences, National Taiwan University, Taipei, 10617, Taiwan; Institute of Earth Sciences, Academia Sinica, 128 Section 2 Academia Road, Taipei, 11529, Taiwan, (3)Department of Geology, University of Birjand, Birjand, Iran, (4)Department of Geosciences, National Taiwan University, Taipei, 10617, Taiwan, knpang@earth.sinica.edu.tw
 
4:50 PM
Discussion
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