Backbone of the Americas—Patagonia to Alaska, (3–7 April 2006)
Session No. 4 Monday, 3 April 2006
10:35 AM-7:45 PM, Congress & Exhibition Center: Foyer and Auditorio Bustelo

T4. Triple Junction Regions I

 Paper #Booth #
4-169FINITE-ELEMENT MODEL RESULTS FOR CHILE RIDGE TRIPLE JUNCTION AND SOUTH AMERICAN EXTENSION: STRESS TRANSFER ACROSS A SUBDUCTION ZONE: APPLEBEE, Gina M. and BEUTEL, Erin K., Geology and Environmental Geosciences, College of Charleston, 66 George St, Charleston, SC 29424, ginacofc@hotmail.com
4-270POST-PLIOCENE DEFORMATION AND UPLIFT OF THE PATAGONIAN ANDES IN RESPONSE TO THE SUBDUCTION OF THE ACTIVE CHILE SPREADING RIDGE (CSR): LAGABRIELLE, Yves1, BELLON, Hervé2, ESPINOZA, Felipe3, GUIVEL, Christele4, MALAVIEILLE, Jacques5, MAURY, René6, MORATA, Diego3, POLVÉ, Mireille7, ROSSELLO, Eduardo8, and SUAREZ, Manuel9, (1) CNRS-UMR Dynamique de la Lithosphère, Université de Montpellier 2, CC 60, Place Eugène Bataillon, Montpellier Cedex5, 34095, France, yves.lagabrielle@dstu.univ-montp2.fr, (2) UMR 6538, Domaines Océaniques, UBO/IUEM-CNRS, 6, Av. Le Gorgeu, Brest, 29285, France, (3) Departamento de Geología, Universidad de Chile, Plaza Ercilla 803, Santiago, 13518-21, Chile, feespino@ing.uchile.cl, (4) UMR CNRS 6112, Laboratoire de Planétologie et Géodynamique, Université de Nantes, 2 rue de la Houssinière, B.P. 92208, Nantes, 44322, (5) CNRS-UMR Dynamique de la Lithosphère, Université de Montpellier 2, CC 60, Place Eugène Bataillon, Montpellier Cedex5, 34O95, France, (6) UMR 6538, Domaines Océaniques, IUEM, Université de Bretagne Occidentale, 6, Av. Le Gorgeu, Brest, 29285 Cedex, France, (7) LMTG - UMR 5563, Observatoire Midi-Pyrénées, 14, avenue Edouard Belin, Toulouse, 31400, France, (8) Departamento de Ciencias Geológicas, CONICET - Area Geología Económica, UNIVERSIDAD DE BUENOS AIRES, Pabellón II, Piso 1°, Ciudad Universitaria, Buenos-Aires, C1428EHA, Argentina, (9) Servicio Nacional de Geología y Minería, Avenida Santa María 0104, Providencia, Santiago, 13518-21, Chile
4-371LATE CENOZOIC MOVEMENT ASSOCIATED WITH THE ARC-PARALLEL LIQUINE-OFQUI FAULT ZONE AND THE CHILE TRIPLE JUNCTION DOCUMENTED BY ACOUSTIC PROFILING OF SHALLOW MARINE AND LACUSTRINE DEPOSITS OF SOUTHERN CHILE: FORSYTHE, Randall D., 3011 East Ford Road, Charlotte, NC 28205, randy_forsythe@earthlink.net and DIEMER, John A., Department of Geography and Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, jadiemer@uncc.edu
4-472CHANGES IN SUBDUCTION DIRECTION AND RIDGE COLLISION AGAINST A CURVED OROGEN: THE CASE OF THE SOUTHERNMOST ANDES: GHIGLIONE, Matías C., Laboratorio de Tectónica Andina, Universidad de Buenos Aires, FCEyN, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina, mghiglione@hotmail.com and RAMOS, Victor A., Laboratorio de Tectónica Andina, Universidad de Buenos Aires, FCEyN, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
4-573CONCAVE-TO FORELAND INDENTER AND THE FORMATION OF AN ARCUATE THRUST SYSTEM IN SANDBOX EXPERIMENTS: A COMPARISON WITH THE SOUTHERNMOST ANDES: GHIGLIONE, Matías C., Laboratorio de Tectónica Andina, Universidad de Buenos Aires, FCEyN, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina, mghiglione@hotmail.com and CRISTALLINI, Ernesto O., Lamoge - Laboratorio de Modelado Geológico, Universidad de Buenos Aires, FCEyN, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
4-674RIDGE SUBDUCTION VOLCANISM IN THE ZEBALLOS COMPLEX, SOUTHERN PATAGONIAN ANDES: DASILVA, Michael, Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, dasilvam2@mail.montclair.edu, GORRING, Matthew L., Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, SINGER, Bradley, Department of Geology and Geophysics, Univ of Wisconsin, 1215 W Dayton St, Madison, WI 53706, and BROWN, Laurie, Department of Geosciences, Univ of Massachusetts, 233 Morrill Science Center, 611 N. Pleasant Street, Amherst, MA 01003-9297
4-775GEOCHEMISTRY OF NEW SAMPLES FROM ISLA COOK, AUSTRAL VOLCANIC ZONE, CHILE: DREHER, Scott T., Department of Earth Sciences, University of Durham, Science Laboratories, South Road, Durham, DH1 3LE, United Kingdom, s.t.dreher@durham.ac.uk and RABBIA, Osvaldo M., Instituto GEA, Universidad de Concepción, Casilla 160-c, Concepción, 3, Chile, rabbia@udec.cl
4-876INITIAL DATA ON THE GEOCHEMISTRY OF THE TORRES DEL PAINE LACCOLITH: MICHEL, Juergen, Institute of Mineralogy, University of Lausanne, Bâtiment Humense, Lausanne, 1015, Switzerland, juergen.michel@unil.ch, BAUMGARTNER, Lukas P., Institut of Mineralogy and Geochemistry, University of Lausanne, Lausanne, 1015, Switzerland, BUSSY, François, Institute of Mineralogy and Geochemistry, University of Lausanne, Humense, Lausanne, CH-1015, Switzerland, and PUTLITZ, Benita, Institute for Mineralogy and Geochemistry, University of Lausanne, Bâtiment Humense, Lausanne, 1015, Switzerland
4-977THE GEOLOGY OF THE TORRES DEL PAINE LACCOLITH, S-CHILE: BAUMGARTNER, Lukas P., Institute of Mineralogy and Geochemistry, University of Lausanne, BFSH2, Lausanne, CH-1015, Switzerland, lukas.baumgartner@unil.ch, MICHEL, Juergen, Institute of Mineralogy, University of Lausanne, Bâtiment Humense, Lausanne, 1015, Switzerland, DARBELLAY, Bastian, Institute of Mineralogy and Geochemistry, University of Lausanne, Humense, Lausanne, CH-1020, Switzerland, PUTLITZ, Benita, Institute for Mineralogy and Geochemistry, University of Lausanne, Bâtiment Humense, Lausanne, 1015, Switzerland, and ROBYR, Martin, Institute of Mineralogy and Geochemistry, University of Lausanne, Lausanne, 1015, Switzerland
4-1078NEW INSIGHTS ABOUT THE INTERACTION OF THE PACIFIC-FARALLON SPREADING CENTER WITH THE BAJA CALIFORNIA SUR CONTINENTAL MARGIN: MICHAUD, François1, ROYER, Jean Yves2, BOURGOIS, Jacques3, DYMENT, Jérôme4, CALMUS, Thierry5, BANDY, William6, MORTERA, Carlos6, SOSSON, M.7, BIGOT-CORMIER, Florence7, and SICHLER, Bertrand8, (1) 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, micho@geoazur.obs-vlfr.fr, (2) UMR 6538, Domaines Océaniques, UBO/IUEM-CNRS, place Nicolas Copernic, Plouzane, 29280, France, (3) Geosciences Azur, Institut pour la Recherche et le Développement, Escuela Politecnica Nacional, Quito, 17-01-2759, Ecuador, (4) CNRS UMR 7097, Laboratoire de Géosciences Marines, Institut de Physique du Globe de Paris, 4 place Jussieu, Paris, 75005, France, (5) Instituto de Geología, ERNO, Universidad Nacional Autónoma de México, PO Box 1039, Hermosillo, 83000, Mexico, (6) Instituto de Geofisica, UNAM, Circuitio exterior, ciudad Universitaria, Mexico, C.P. 04510, Mexico, (7) UNSA-UPMC-CNRS-IRD UMR 6526, Géosciences Azur, Bât 4, 250 rue Albert Einstein, Les Lucioles 1, Sophia Antipolis, Valbonne, 06560, France, (8) Ifremer, BP 70, Plouzané, 29280, France
4-1179IMPLICATIONS FOR THE TRANSITION FROM OLIGO-MIOCENE SUBDUCTION TO LATE MIOCENE TRANSTENSION IN SOUTHERN SONORA, MEXICO FROM IGNEOUS GEOCHEMISTRY: TILL, Christy, Dept. of Geological Sciences, UCSB, Dept. of Earth Science, University of California, Santa Barbara, CA 93106, till@umail.ucsb.edu, GANS, Phillip B., Earth Science, University of California, Santa Barbara, CA 93106-9630, and SPERA, Frank, Dept. of Geological Sciences, Univ of California, Santa Barbara, CA 93106
4-1280SOUTHWESTERN NORTHAMERICAN IMPLICATIONS OF THE TRIPLE JUNCTION MODEL FOR THE GULF OF MEXICO: RUEDA-GAXIOLA, Jaime, Geology, Unidad de Ciencias de la Tierra-ESIA.IPN, Calzada Ticomán # 600. Del. Gultavo A. Madero. Col. San José Ticomán, México, D.F 07330 Mexico, jaimerueda@compuserve.com.mx
4-1381BROAD-SCALE VELOCITY MODEL FOR THE GULF OF CALIFORNIA REGION (MEXICO): DI LUCCIO, Francesca, Seismology and Tectonophysics, Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata 605, Rome, 00143, Italy, diluccio@ingv.it and CLAYTON, Robert W., Seismological Laboratory, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125
4-1482POST-EOCENE IGNEOUS AND TECTONIC EFFECTS OF SPREADING CENTER SUBDUCTION UNDER SOUTHEAST ALASKA: KARL, S.M.1, HAEUSSLER, P.J.1, FRIEDMAN, Richard M.2, LAYER, P.W.3, ZUMSTEG, C.L.4, and WHITE, Tim S.5, (1) U.S. Geological Survey, 4200 University Dr, Anchorage, AK 99508, skarl@usgs.gov, (2) PCIGR, Dept. Earth and Ocean Sciences, Univ. British Columbia, 6339 Stores Rd, Vancouver, BC BCV6T1Z4, Canada, rfriedma@eos.ubc.ca, (3) Geochronology Lab, Geophysical Institute, University of Alaska, Fairbanks, AK 99775, (4) Dept. of Geology, University of Missouri, Columbia, MO 65211, (5) EMS Environment Institute, The Pennsylvania State Univ, 2217 EES Building, University Park, PA 16802
4-1583EVIDENCE FOR EARLY TERTIARY RIDGE SUBDUCTION ALONG THE SOUTHERN ALAKSAN MARGIN: O'DRISCOLL, Leland James, Geological Sciences, University of New Orleans, 2000 Lakeshore Dr, New Orleans, LA 70148, ljo_geo@yahoo.com
4-1684SEISMICITY PATTERNS AND HIGH RESOLUTION BATHYMETRY DEFINE ACTIVE STRUCTURES ON THE YAKUTAT MICROPLATE SHELF AND SLOPE, ALASKA: LOWE, Lindsay A.1, GULICK, Sean PS.1, MANN, Paul2, FREYMUELLER, Jeffrey T.3, and PAVLIS, Terry4, (1) Jackson School of Geosciences, Institute for Geophysics, University of Texas, Austin, 4412 Spicewood Springs Rd, Bldg 600, Austin, TX 78759, lindsay@ig.utexas.edu, (2) Institute for Geophysics, Univ of Texas at Austin, 4412 Spicewood Springs Road #600, Austin, TX 78759-8500, (3) Geophysical Institute, University of Alaska, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, (4) Dept. of Geology and Geophysics, Univ of New Orleans, New Orleans, LA 70148
4-1785A GEOCHEMICAL INVESTIGATION OF THE WOODLARK RIDGE-SOLOMON ISLANDS ARC TRIPLE JUNCTION: CHADWICK, John1, PERFIT, Michael2, and CHADWICK, Claire1, (1) Geography and Earth Sciences, University of North Carolina, Charlotte, NC 28215, djchadwi@email.uncc.edu, (2) Geological Sciences, University of Florida, Gainesville, FL 32611
4-1886CHARACTERIZING SUBDUCTION OF ACTIVE SPREADING RIDGES IN THE ANCIENT GEOLOGIC RECORD. A CASE STUDY FROM THE VARISCAN OROGENY: DÍAZ AZPIROZ, Manuel, Departamento de Ciencias Ambientales, Universidad Pablo de Olavide, Crtra. Utrera, km 1, Seville, 41013, Spain, mdiaazp@upo.es, FERNÁNDEZ, Carlos, Departamento de Geodinámica y Paleontología, Universidad de Huelva, Facultad de Ciencias Experimentales, Campus de El Carmen, Huelva, 21071, Spain, and CASTRO, Antonio, Departamento de Geología, Universidad de Huelva, Facultad de Ciencias Experimentales, Campus del El Carmen, Huelva, 21071, Spain, dorado@uhu.es

Back to the Backbone of the Americas—Patagonia to Alaska, (3–7 April 2006)
General Information for this Meeting