Session: Neogene Subduction, Arc Magmatism, and Tectonics in the Cordillera (Cordilleran Section

Paper #

Start Time

1

8:30 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, 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, kayeg@geo.orst.edu, kayeg@geo.orst.edu

2

8:50 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, (2)Canada, (3)Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada, vlady@ollin.igeofcu.unam.mx, vlady@ollin.igeofcu.unam.mx

3

9:10 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, marco@geociencias.unam.mx

4

9:30 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, 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, ccanet@tonatiuh.igeofcu.unam.mx, ccanet@tonatiuh.igeofcu.unam.mx

5

9:50 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, 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, petrone@geo.unifi.it, petrone@geo.unifi.it

10:10 AM

Break

6

10:25 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, 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, tuena@geociencias.unam.mx, tuena@geociencias.unam.mx

7

10:45 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, luca@geociencias.unam.mx

8

11:05 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, (2)Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Mexico, D.F, 04510, Mexico, ger@geociencias.unam.mx, ger@geociencias.unam.mx

9

11:25 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 and HAMMOND, Paul E., Portland State Univ, PO Box 751, Portland, OR 97207-0751, jtepper@ups.edu, jtepper@ups.edu

10

11:45 AM

GEOCHEMICAL ARCHITECTURE OF THE WRANGELL VOLCANIC FIELD, ALASKA

HART, William K., Geology Dept, Miami Univ, 114 Shideler Hall, Oxford, OH 45056-2473 and PREECE, Shari J., Geology Dept, Univ. of Toronto, Toronto, ON M5S 3B1, Canada, hartwk@muohio.edu, hartwk@muohio.edu

Cordilleran Section - 99th Annual (April 1–3, 2003)

T4. Neogene Subduction, Arc Magmatism, and Tectonics in the Cordillera