Session: Initiation and Termination of Subduction: Rock Record, Geodynamic Models, Modern Plate Boundaries (Posters) (2010 GSA Denver Annual Meeting (31 October

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

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

Authors will be present from 2 to 4 PM, and 4:30 to 5:30 PM.

Paper #

Booth #

300

PERMIAN-TRIASSIC OROGENESIS IN THE NORTHERN ANDES: A RECORD OF ARC MAGMATISM, ACCRETION, ANATEXIS AND RELAXATION OF A CONTINENTAL TERRANE IN THE PROTO-ANDES IN THE WAKE OF PANGEA

IBANEZ-MEJIA, Mauricio¹, VINASCO, Cesar², CARDONA, Agustin³, WEBER, Marion² and VALENCIA, Victor⁴, (1)Department of Geosciences, University of Arizona, Gould-Simpson Building, Tucson, AZ 85721, (2)Geociencias, Universidad Nacional de Colombia - Medellin, Medellin, 000004, Colombia, (3)Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002, Balboa, Ancon, Panama, 0843-03092, Panama, (4)Valencia Geoservices, 3389 N River Rapids Dr, Tucson AZ, AZ 85712, ibanezm@email.arizona.edu, ibanezm@email.arizona.edu

301

EVOLUTION OF THE NORTHERN PROTO-ANDEAN MARGIN IN ECUADOR, BASED ON NEW ZIRCON GEOCHRONOLOGY AND WHOLE ROCK GEOCHEMISTRY

BUCHWALDT, Robert, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 and TOULKERIDIS, Theofilos, Escuela Politécnica del Ejército, Campus Sangolquí, Av. Gral. Rumiñahui s/n Sangolquí, P.O.BOX, Quito, 171-5-231B, Ecuador, buch_1@mit.edu, buch_1@mit.edu

302

THE PALEOGENE INTRUSIVE OF THE SIERRA NEVADA DE SANTA MARTA, COLOMBIA: SHORT-LIVED MAGMATISM RELATED TO THE COLLISION OF THE CARIBBEAN PLATE WITH SOUTH AMERICA

DUQUE-TRUJILLO, Jose Fernando¹, OROZCO-ESQUIVEL, Teresa¹, CARDONA, Agustín², FERRARI, Luca¹, LÓPEZ-MARTÍNEZ, Margarita³, SOLARI, Luigi⁴ and VALENCIA, Victor A.⁵, (1)Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Blvd Juriquilla 3001, Juriquilla, Queretaro, 76230, Mexico, (2)Smithsonian Tropical Research Institute, Roosvelt Ave, Tupper Building – 401, Balboa, 00000, Panama, (3)Geology Department, Earth Sciences Division, CICESE, Km. 107 carr. Tijuana-Ensenada, Ensenada, B.C, 22860, Mexico, (4)Universidad Nacional Autónoma de México, Centro de Geociencias, Campus Juriquilla, Santiago de Querétaro, 76001, Mexico, (5)Geosciences, University of Arizona, Gould Simpson Bldg Rm 548 1040E 4th Street, Tucson, AZ 85721, jfduque@geociencias.unam.mx, jfduque@geociencias.unam.mx

303

BURIAL HISTORY AND TECTONOTHERMAL EVOLUTION OF THE CUYANIA TERRANE (ARGENTINE PRECORDILLERA) AS REVEALED BY CONODONT COLOR ALTERATION DATA

VOLDMAN, Gustavo Gabriel¹, ALBANESI, Guillermo L.¹ and RAMOS, Víctor A.², (1)Museo de Paleontología - Universidad Nacional de Córdoba, CICTERRA-CONICET, Av. Vélez Sarsfield 1611, Córdoba, X5016GCA, Argentina, (2)Laboratorio de Tectónica Andina, CONICET - Universidad de Buenos Aires, Ciudad Universitaria. Pab.II, Buenos Aires, C1428EHA, Argentina, gvoldman@efn.uncor.edu, gvoldman@efn.uncor.edu

304

LONG TERM DISPLACEMENT ACROSS THE BARTLETT SPRINGS FAULT ZONE: IMPLICATIONS FOR EVOLUTION OF THE EAST SAN FRANCISCO BAY FAULT SYSTEM AND STRUCTURAL HOOKS IN THE NORTHERN COAST RANGES, CALIFORNIA

MCLAUGHLIN, R.J., U.S. Geological Survey, 345 Middlefield Road, Mail Stop 973, Menlo Park, CA 94025, CAMPBELL, Kathleen A., School of Geography, Geology and Environmental Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand, LIENKAEMPER, J.J., U.S. Geological Survey, Mail Stop 977, Menlo Park, CA 94025, GRAYMER, R.W., U.S. Geological Survey, 345 Middlefield Road, MS 973, Menlo Park, CA 94025, MORING, B.C., U.S. Geological Survey, 345 Middlefield Road, Mail Stop 901, Menlo Park, CA 94025, OHLIN, H.N., 1375 Earl Drive, Reno, NV 89503 and ENDERLIN, D.A., 2950 Lake County Highway, Calistoga, CA 94515, rjmcl@usgs.gov, rjmcl@usgs.gov

305

COLLISIONAL METAMORPHIC SIGNATURE IN THE SIERRA NEVADA, CALIFORNIA? HIGH-GRADE METAMORPHISM OF THE SHOO FLY COMPLEX

MENDOZA, Yvan, Earth and Environmental Sciences, California State University, Fresno, 2576 East San Ramon Avenue M/S ST24, Fresno, CA 93740 and WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, regalao@mail.fresnostate.edu, regalao@mail.fresnostate.edu

306

AMPHIBOLITE AND BLUESCHIST FACIES METAMORPHISM, FEATHER RIVER ULTRAMAFIC BELT, YUBA RIVER DRAINAGE: A RECORD OF SUBDUCTION INITIATION, RIDGE SUBDUCTION, AND CONTINUED SUBDUCTION?

MASUTSUBO, Nobuaki, Department of Earth and Environmental Sciences, California State University, Fresno, 2576 East San Ramon Ave. M/S ST24, Fresno, CA 93740 and WAKABAYASHI, John, Department of Earth and Environmental Sciences, California State University, Fresno, CA 93740, nmasutsubo@mail.fresnostate.edu, nmasutsubo@mail.fresnostate.edu

307

GEOCHEMISTRY OF THE HEREFORD MEADOW AMPHIBOLITE: POSSIBLE TECTONIC SETTING AND RELATIONSHIP TO LATE JURASSIC SUBDUCATION

MACDONALD Jr, James H., Marine and Ecological Sciences, Florida Gulf Coast State University, 10501 FGCU Boulevard South, Fort Myers, FL 33965 and HARPER, Gregory D., Professor Emeritus, University at Albany, Albany, NY 12222, jmacdona@fgcu.edu, jmacdona@fgcu.edu

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