Backbone of the Americas—Patagonia to Alaska, (3–7 April 2006)

Session No. 10
Thursday, 6 April 2006: 8:30 AM-12:30 PM

T4. Triple Junction Regions II

 

Paper #
Start Time
1
8:30 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, (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, dbradley@usgs.gov, dbradley@usgs.gov
2
8:50 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 and PATERSON, Scott R., Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, dfarris@earth.usc.edu, dfarris@earth.usc.edu
3
9:10 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, BRADLEY, Dwight C., USGS, Anchorage, AK 99508 and FRIEDMAN, Richard M., Earth and Ocean Sciences, University of British Columbia, Vancouver, BC V6T 1Z4, Canada, tswhite@essc.psu.edu, tswhite@essc.psu.edu
4
9:30 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, (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, 241 Williamson Hall PO Box 112120, 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, sean@ig.utexas.edu, sean@ig.utexas.edu
5
9:50 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, rharris@byu.edu
6
10:10 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 and TORAMAN, Erkan, Earth and Atmospheric Sciences, St. Louis University, 3507 Laclede Ave, St. Louis, MO 63103, kusky@eas.slu.edu, kusky@eas.slu.edu
 
10:30 AM
Break
7
10:50 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, rwk6@cornell.edu
8
11:10 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, (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, jyroyer@univ-brest.fr, jyroyer@univ-brest.fr
9
11:30 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, (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, gans@geol.ucsb.edu, gans@geol.ucsb.edu
10
11:50 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, (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, jean-yves.royer@univ-brest.fr, jean-yves.royer@univ-brest.fr
11
12:10 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, (2)Department of Geosciences, Trinity University, One Trinity Place, San Antonio, TX 78212, (3)Ovsicori, Universidad Nacional, Heredia, Costa Rica, fisher@geosc.psu.edu, fisher@geosc.psu.edu
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