Session No. 20 Wednesday, April 2, 2003

8:30 AM-12:05 PM, Hotel NH Krystal: Jalisco C
T4. Neogene Subduction, Arc Magmatism, and Tectonics in the Cordillera
Luca Ferrari, Presiding
 Paper #Start Time
20-18:30 AM TESTING SPATIAL CORRELATION OF INTERPLATE COUPLING AND FOREARC MORPHO-TECTONICS: A NEW MODEL FOR COMPARATIVE SUBDUCTOLOGY BASED ON HIGH RESOLUTION DIGITAL ELEVATION DATA: KAYE, Grant David, Geosciences, Oregon State Univ, 104 Wilkinson Hall, Corvallis, OR 97331, kayeg@geo.orst.edu, GOLDFINGER, Chris, Oregon State Univ, 104 Oceanography Admin Bldg, Corvallis, OR 97331-8563, and MEIGS, Andrew J., Department of Geosciences, Oregon State Univ, 104 Wilkinson Hall, Corvallis, OR 97331
20-28:50 AM THERMAL MODELS, COUPLING AND METAMORPHISM FOR THE MEXICAN SUBDUCTION ZONE BENEATH GUERRERO: MANEA, Vlad Constantin1, KOSTOGLODOV, Vladimir1, MANEA, Marina1, CURRIE, Claire2, and WANG, Kelin3, (1) Seismology, Instituto de Geofisica - UNAM - Mexico City, Instituto de Geofísica UNAM Circuito de la Inv. Científica s/n, Ciudad Universitaria 04510 México D.F, Mexico, 04510, Mexico, vlady@ollin.igeofcu.unam.mx, (2) Canada, (3) Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada
20-39:10 AM GEOMETRIC ASPECTS OF THE SUBDUCTION OF THE COCOS PLATE: IMPLICATIONS FOR THE ORIENTATION OF THE TRANS-MEXICAN VOLCANIC BELT: GUZMÁN-SPEZIALE, Marco, Centro de Geociuencias, UNAM, Campus UNAM Juriquilla, Queretaro 76230 Mexico, marco@geociencias.unam.mx.
20-49:30 AM PETROLOGICAL CHARACTERISTICS OF THE PUNTA MITA BASALTS, NAYARIT, MEXICO: CANET, Carles, Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico D.F, 04510, Mexico, ccanet@tonatiuh.igeofcu.unam.mx, CRUZ-OCAMPO, Juan Carlos, Posgrado en Ciencias de la Tierra, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico DF, 04510, Mexico, PROL-LEDESMA, Rosa Ma., Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico DF, 04510, Mexico, PROENZA, Joaquin, Dep. Cristal.lografia, Mineralogía i Deposits Minerals, Universitat de Barcelona, Marti i Franques s/n, Barcelona, 08028, Spain, and TOLSON, Gustavo, Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico DF, 04510, Mexico
20-59:50 AM MASSIVE SILICIC VOLCANISM OF THE WESTERN TRANS-MEXICAN VOLCANIC BELT: INFERENCE ON THEIR GENESIS FROM GEOCHEMICAL AND ISOTOPE DATA: PETRONE, Chiara Maria, Dipartimento di Scienze della Terra, Universita' degli Studi di Firenze, Via G. La Pira 4, Firenze, 50121, Italy, petrone@geo.unifi.it, FERRARI, Luca, Centro de Geociencias, UNAM, Campus Juriquilla, Juriquilla, 76230, Mexico, LÓPEZ MARTÍNEZ, Margarita, Geology Department, Earth Sciences Division, CICESE, km. 107 carr. Tijuana-Ensenada, Ensenada, B.C, 22860, Mexico, and MANETTI, Piero, Instituto CNR Geoscienze e Georisorse, Via G. La Pira 4, Firenze, 50121, Italy
 10:10 AM Break
20-610:25 AM GEOCHEMICAL EVIDENCE FOR SLAB MELTING IN THE TRANSMEXICAN VOLCANIC BELT: GOMEZ-TUENA, Arturo, Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Queretaro, 76230, Mexico, tuena@geociencias.unam.mx, ORTEGA-GUTIERREZ, F., Inst. de Geologia, UNAM, Ciudad Universitaria, Mexico DF, 04510, Mexico, LANGMUIR, Charles H., Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, and GOLDSTEIN, Steven L., Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10960
20-710:45 AM VOLCANIC EPISODES IN THE TRANSMEXICAN VOLCANIC BELT: IMPLICATIONS FOR SUBDUCTION DYNAMICS: FERRARI, Luca, Centro de Geociencias, UNAM, Campus Juriquilla, Queretaro 76230 Mexico, luca@geociencias.unam.mx.
20-811:05 AM THE QUERETARO GRABEN: BASIN AND RANGE FAULTING IN THE CENTRAL-NORTHERN PORTION OF THE MEXICAN VOLCANIC BELT: AGUIRRE-DÍAZ, Gerardo J.1, NIETO-OBREGÓN, Jorge2, and ZUÑIGA, Ramon1, (1) Centro de Geociencias, Universidad Nacional Autónoma de México, Campus UNAM-Juriquilla, Querétaro, 76230, Mexico, ger@geociencias.unam.mx, (2) Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico, D.F, 04510, Mexico
20-911:25 AM VARIATIONS IN CASCADE ARC MAGMATISM THROUGH SPACE AND TIME: A COMPARISON OF GEOCHEMICAL AND GEOGRAPHIC TRENDS IN VOLCANIC AND PLUTONIC ROCKS FROM THE CHILLIWACK-MT. BAKER AND FIFES PEAKS-BUMPING LAKE AREAS, WASHINGTON: TEPPER, Jeffrey H., Geology, Univ of Puget Sound, Tacoma, WA 98416, jtepper@ups.edu and HAMMOND, Paul E., Portland State Univ, PO Box 751, Portland, OR 97207-0751
20-1011:45 AM GEOCHEMICAL ARCHITECTURE OF THE WRANGELL VOLCANIC FIELD, ALASKA: HART, William K., Geology Dept, Miami Univ, 114 Shideler Hall, Oxford, OH 45056-2473, hartwk@muohio.edu and PREECE, Shari J., Geology Dept, Univ. of Toronto, Toronto, ON M5S 3B1, Canada

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