Backbone of the Americas—Patagonia to Alaska, (3–7 April 2006)
Session No. 10 Thursday, 6 April 2006
8:30 AM-12:30 PM, Congress & Exhibition Center: Aula Magna

T4. Triple Junction Regions II

 Paper #Start Time
10-18:30 AM FAR-FIELD EFFECTS OF EARLY TERTIARY RIDGE SUBDUCTION IN ALASKA: BRADLEY, Dwight C.1, FRIEDMAN, Richard M.2, LAYER, P.W.3, HAEUSSLER, P.J.1, TILL, AB.1, ROESKE, S.M.4, and MILLER, M.L1, (1) USGS, Anchorage, AK 99508, dbradley@usgs.gov, (2) Earth and Ocean Sciences, Univ of British Columbia, Vancouver, BC V6T 1Z4, (3) Dept. of Geol. & Geophys, Univ. of Alaska, Fairbanks, AK 99775, (4) Dept of Geology, Univ. of California, Davis, CA 95616
10-28:50 AM SPREADING-RIDGE SUBDUCTION AND THE KINEMATIC AND MAGMATIC EVOLUTION OF THE SANAK-BARANOF BELT, SOUTHERN ALASKA: FARRIS, David W., Dept. of Earth Sciences, Univ of Southern California, 3651 Trousdale Ave, Los Angeles, CA 90089-0740, dfarris@earth.usc.edu and PATERSON, Scott R., Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740
10-39:10 AM STRATIGRAPHIC AND GEOCHRONOLOGICAL EVIDENCE FOR A TIME-TRANSGRESSIVE UNCONFORMITY AND SUBSEQUENT BASALT EXTRUSION EVENT ASSOCIATED WITH RIDGE SUBDUCTION, PALEOGENE ALASKA: WHITE, Tim S., Earth and Environmental Systems Institute, The Pennsylvania State Univ, 2217 EES Building, University Park, PA 16802, tswhite@essc.psu.edu, BRADLEY, Dwight C., USGS, Anchorage, AK 99508, and FRIEDMAN, Richard M., Earth and Ocean Sciences, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
10-49:30 AM SIGNIFICANT TECTONIC AND CLIMATIC EVENTS FOR THE YAKUTAT BLOCK COLLISION, GULF OF ALASKA: PLEISTOCENE GLACIAL INTENSIFICATION IN THE ST. ELIAS MOUNTAINS AND THE RELATIONSHIP BETWEEN THE FAIRWEATHER AND TRANSITION FAULTS: GULICK, Sean P.S.1, WILLEMS, Bryce2, FREYMUELLER, Jeffrey T.3, POWELL, Ross4, JAEGER, John5, KALBAS, Jay6, PAVLIS, Terry7, LOWE, Lindsay A.1, MAYER, Larry8, and GARDNER, Jim8, (1) Univ Texas - Austin, 4412 Spicewood Springs Rd, Austin, TX 78759-8500, sean@ig.utexas.edu, (2) Department of Geology & Environmental Geosciences, Northern Illinois University, Davis Hall 312, Normal Rd, DeKalb, IL 60115, (3) Geophysical Institute, University of Alaska, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, (4) Department of Geology & Environmental Geosciences, Northern Illinois University, De Kalb, IL 60115, (5) Department of Geological Sciences, University of Florida, Gainesville, FL 32611-2120, (6) Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, (7) Dept. of Geology and Geophysics, Univ of New Orleans, New Orleans, LA 70148, (8) Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, NH 03824
10-59:50 AM IS SLAB ROLLBACK THE EXCEPTION OR THE RULE? THE CASE OF THE BROOKS RANGE OPHIOLITE, ALASKA: HARRIS, Ron, Geological Sciences, Tectonic Processes Collaborative, Brigham Young Univeristy, S-349 ESC, Provo, UT 84602, rharris@byu.edu
10-610:10 AM DIFFERENTIATING BETWEEN ACCRETED ARC FRAGMENTS AND RIDGE-SUBDUCTION RELATED MAGMATIC BELTS IN FOREARC TERRANES: EXAMPLES FROM ALASKA, ALTAIDS, AND ARCHEAN: KUSKY, Timothy M., St Louis Univ, 3507 Laclede Ave, Saint Louis, MO 63103-2010, kusky@eas.slu.edu and TORAMAN, Erkan, Earth and Atmospheric Sciences, St. Louis University, 3507 Laclede Ave, St. Louis, MO 63103
 10:30 AM Break
10-710:50 AM SUBDUCTION EROSION AND RECYCLED CRUST AT CONVERGENT MARGINS: THE ADAK ADAKITE EXAMPLE: KAY, Robert W., Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853-1504, rwk6@cornell.edu
10-811:10 AM RIDGE-TRENCH COLLISION ALONG BAJA CALIFORNIA SUR CONTINENTAL MARGIN : PLATE TECTONIC EVOLUTION SINCE 15 MA: ROYER, Jean Yves1, MICHAUD, François2, PALLARES, Carlos3, MAURY, René C.3, and DYMENT, Jérôme4, (1) Domaines Oceaniques, CNRS-UBO/IUEM, Place Copernic, Plouzane, 29280, France, jyroyer@univ-brest.fr, (2) UPMC-IRD-CNRS-UNSA- UMR 6526, Géosciences Azur and Escuela Politecnica Nacional, Departamento de Geologia, (Ecuador), B.P. 48 - Port de la Darse, Villefranche sur Mer, 06235, France, (3) Domaines Océaniques, UBO/IUEM-CNRS, Place Copernic, Plouzane, 29280, France, (4) CNRS UMR 7154, Laboratoire de Géosciences Marines, Institut de Physique du Globe de Paris, 4 place Jussieu, Paris, 75005, France
10-911:30 AM CENOZOIC STRUCTURAL AND MAGMATIC EVOLUTION OF THE SONORAN BASIN-RANGE AND GULF OF CALIFORNIA RIFT SYSTEM: GANS, Phillip B.1, WONG, Martin2, MACMILLAN, Ian3, BLAIR, Karen D.1, ROLDAN, Jaime4, TILL, Christy1, and HERMAN, Scott1, (1) Earth Science, University of California, Santa Barbara, CA 93106-9630, gans@geol.ucsb.edu, (2) Department of Geology, Colgate University, Hamilton, NY 13346, (3) Geology Department, Pomona College, 609 N. College Ave, Claremont, CA 91711, (4) Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Estacion Regional del Noroeste, UNAM, Apartado Postal 1039, Hermosillo, 83000, Mexico
10-1011:50 AM SLAB TEARING FOLLOWING RIDGE-TRENCH COLLISION : EVIDENCE FROM LATE MIOCENE MAGMATISM IN BAJA CALIFORNIA, MEXICO: PALLARES, Carlos1, MAURY, René C.1, BELLON, Hervé2, ROYER, Jean Yves1, AGUILLÓN-ROBLES, Alfredo3, CALMUS, Thierry4, COTTEN, Joseph2, BENOIT, Mathieu1, MICHAUD, François5, and BOURGOIS, Jacques6, (1) UMR 6538, Domaines Océaniques, UBO/IUEM-CNRS, Place Nicolas Copernic, Plouzane, 29280, France, jean-yves.royer@univ-brest.fr, (2) UMR 6538, Domaines Océaniques, UBO/IUEM-CNRS, 6, Av. Le Gorgeu, Brest, 29285, France, (3) Instituto de Geología, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava no. 5, San Luis Potosí, 78240, Mexico, (4) Instituto de Geología, ERNO, Universidad Nacional Autónoma de México, PO Box 1039, Hermosillo, 83000, Mexico, (5) UNSA-UPMC-CNRS-IRD UMR 6526, Géosciences Azur, B.P. 48 - Port de la Darse, Villefranche sur Mer, 06235, France, (6) Institut pour la Recherche et le Développement, Petroproducción, km 6.5. via a la Costa, Guayaquil, Ecuador
10-1112:10 PM FORE ARC RESPONSE TO MIGRATION OF THE COCOS, NAZCA, PANAMA TRIPLE JUNCTION IN CENTRAL AMERICA: FISHER, Donald1, GARDNER, Thomas2, MORELL, Kristin1, SITCHLER, Jason1, PROTTI, Marino3, and SANCHEZ, Joanna2, (1) Department of Geosciences, Penn State Univ, University Park, PA 16802, fisher@geosc.psu.edu, (2) Department of Geosciences, Trinity University, One Trinity Place, San Antonio, TX 78212, (3) OVSICORI, Universidad Nacional, Heredia, Costa Rica

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