Session No. 34 Thursday, April 3, 2003

8:30 AM-12:05 PM, Hotel NH Krystal: Punta Mita
T8. Sedimentation in Ancient and Recent Volcanic Arcs
Elena Centeno-Garcia and Gerardo Carrasco-Nuñez, Presiding
 Paper #Start Time
34-18:30 AM PROBABLE VOLCANO-SEDIMENTARY COMPLEXES COMING OUT FROM INFORMAL LITHOSTRATIGRAPHIC UNITS OF SEVERAL MESOZOIC AGES OBSERVED IN CENTRAL NORTHERN SONORA , MEXICO: RODRÍGUEZ-TORRES, Rafael1, ALMAZÁN-VÁSQUEZ, Emilio1, and RODRIGUEZ-CASTAÑEDA, Jose Luis2, (1) Departamento de Geología, Universidad de Sonora, Rosales y Colosio, Hermosillo, 83000, Mexico, rafael@geologia.uson.mx, (2) Instituto de Geología, UNAM, Aptdo Postal 1039, Hermosillo, 83000, Mexico
34-28:50 AM DEPOSITIONAL ENVIRONMENT AND PALEOGEOGRAPHIC DISTRIBUTION OF THE JURASSIC-CRETACEOUS ARC IN THE WESTERN AND NORTHERN GUERRERO TERRANE, MEXICO: CENTENO-GARCIA, Elena1, OLVERA-CARRANZA, Karla1, CORONA-ESQUIVEL, Rodolfo1, CAMPRUBÍ, Antoni2, TRITLLA, Jordi2, and SANCHEZ-MARTINEZ, Salvador1, (1) Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Delegacion Coyoacan, Mexico, 04510, Mexico, centeno@servidor.unam.mx, (2) Centro de Geociencias, Universidad Nacional Autónoma de México, Carretera Qro.-S.L.P. km 15.5, Campus UNAM-Juriquilla, Santiago de Querétaro, 76230, Mexico
34-39:10 AM STRATIGRAPHY, SEDIMENTOLOGY, AND PROVENANCE EVOLUTION OF EARLY CRETACEOUS ARCS, THE GUERRERO TERRANE (SW MEXICO): BASED ON DETAILS STUDIES OF THE HUETAMO AND TELOLOAPAN AREAS: GUERRERO-SUASTEGUI, Martin1, RAMIREZ-ESPINOSA, Joel1, and HISCOTT, Richard N.2, (1) Escuela Regional de Ciencias de la Tierra, Universidad Autónoma de Guerrero, Ex-Hacienda de San Juan Bautista, Taxco, Gro, 197, Mexico, mgros62@yahoo.com.mx, (2) Earth Sciences, Memorial Univ of Newfoundland, St. John´s, NF A1B 3X5, Canada
34-49:30 AM A STRATIGRAPHIC EVALUATION OF THE TUSCAN FORMATION, NORTHERN CALIFORNIA: BRUNKAL, Holly A., Geosciences, California State Univ, Chico, 217 Physical Sciences Bldg, CSU, Chico, Chico, CA 95929, brunkal@yahoo.com.
34-59:50 AM CATASTROPHIC SEDIMENTATION ON THE EASTERN END OF THE MEXICAN VOLCANIC BELT: CARRASCO-NÚÑEZ, Gerardo1, SIEBERT, Lee2, HUBBARD, Bernard3, DÍAZ, Rodolfo1, SHERIDAN, Michael4, ZIMBELMAN, Dave5, WATTERS, Robert6, and RODRIGUEZ, Sergio7, (1) Centro de Geociencias, Campus Juriquilla, UNAM, Apdo. Postal 1-742, Centro, Querétaro, Qro, 76001, Mexico, gerardoc@unicit.unam.mx, (2) Smithsonian Institution, Washington, DC, (3) U.S. Geol Survey, Eastern Mineral Resources MS-954, 12201 Sunrise Valley Drive, Reston, VA 20192, (4) SUNY, Univ of Buffalo, Buffalo, NY, (5) G.O.Logic, White Salmon, White Salmon, WA, (6) Mackay School of Mines, Univ of Nevada, Reno, NV, (7) Instituto de Geología, UNAM, Mexico
 10:10 AM Break
34-610:25 AM STRATIGRAPHIC EVOLUTION OF THE EARLY CRETACEOUS ALISITOS ARC FROM SAN QUINTIN TO MISSION SAN FERNANDO (BAJA CALIFORNIA, MEXICO): BUSBY, Cathy, Department of Geological Sciences, Univ of California, Santa Barbara, CA 93106, cathy@geol.ucsb.edu, MATTINSON, James, Geological Sciences, Univ of California, Santa Barbara, CA 93106, FACKLER-ADAMS, Ben, Interdisciplinary Sciences, Skagit Valley College, 2405 E College Way, Mt Vernon, WA 98273, and DEOREO, Stephen, Department of Geological Sciences, Univ of California, Santa Barbara, CA 93106
34-710:45 AM ANALYSIS OF TRENDS IN THE COMPOSITION AND ROUNDING OF SAND AND GRAVEL FROM THE WAIPAOA RIVER AND COASTAL REGION, NORTH ISLAND, NEW ZEALAND: JAMES, Dawn E.1, SANCHEZ, Noemi2, ORTIZ, Daniel2, DEVAUGHN, Alissa M.1, and MARSAGLIA, Kathleen M.1, (1) Geological Sciences, California State Univ Northridge, 18111 Nordhoff St, Northridge, CA 91330-8266, geo_dawn@hotmail.com, (2) John H. Francis Polytechnic Math/Sci Technology Magnet High School, 12431 Roscoe Blvd, Sun Valley, CA 91352
34-811:05 AM EXPLORING THE HYPOTHESIS THAT SUBDUCTION EROSION FORMED THE PROMINENT ALEUTIAN TERRACE AND ITS UNDERLYING DEEP WATER FOREARC BASIN: SCHOLL, David W.1, VON HUENE, Roland2, and RYAN, Holly F.1, (1) US Geol Survey, 345 Middlefield Rd, Menlo Park, CA 94025-3591, dscholl@usgs.gov, (2) Geology, Univ of California Davis, Department of Geology, University of California, Davis, CA 95616
34-911:25 AM PLIOCENE-PLEISTOCENE SEDIMENTATION IN THE SOUTHEASTERN ACAMBAY GRABEN, CENTRAL MEXICAN VOLCANIC BELT: MERCER, Lonnie T.1, KOWALLIS, Bart J.1, CARRANZA-CASTAÑEDA, Oscar2, MILLER, Wade E.1, CHRISTIANSEN, Eric H.1, ISRADE-ALCANTARA, Isabel3, and ROJAS, Matthew L.1, (1) Department of Geology, Brigham Young Univ, Provo, UT 84602, sngbom@geology.byu.edu, (2) Centro de Geociencias, Universidad Nacional Autónoma de México, Queretaro, 76230, Mexico, (3) Departamento de Geologia, Universidad Michoacana de San Nicolas de Hidalgo, Edif. U. Ciudad Universitaria, AP 888, Morelia, 58000, Mexico
34-1011:45 AM THE TECOLOTLAN GRABEN: A RECORD OF SEDIMENTATION AND VOLCANISM FROM CRETACEOUS AND TERTIARY VOLCANIC ARCS: KOWALLIS, Bart J.1, MILLER, Wade E.1, CARRANZA-CASTAÑEDA, Oscar2, CHRISTIANSEN, Eric H.1, SWISHER, Carl C. III3, ROSS, Keryn T.1, DEINO, Alan L.4, and TINGEY, David G.1, (1) Department of Geology, Brigham Young Univ, Provo, UT 84602, bkowallis@byu.edu, (2) Instituto de Geología, Universidad Nacional Autónoma de México, México 20, D.F. 04510, Mexico, (3) Department of Geological Sciences, Rutgers Univ, Piscataway, NJ 08854-80669, (4) Berkeley Geochronology Ctr, 2455 Ridge Road, Berkeley, CA 94709

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