Session: T1. Plenary I: The Backbone of the Americas (Backbone of the Americas

Paper #

Start Time

8:30 AM

Introductory Remarks

1

8:45 AM

ANATOMY AND GLOBAL SETTING OF THE NORTH AMERICAN CORDILLERA

DICKINSON, William R., Department of Geosciences, Univ of Arizona, Box 210077, Tucson, AZ 85721, wrdickin@geo.arizona.edu, wrdickin@geo.arizona.edu

2

9:15 AM

TECTONIC EVOLUTION OF WESTERN SOUTH AMERICA

RAMOS, Victor A., Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Laboratorio de Tectónica Andina, Ciudad Universitaria, Pabellón II, Buenos Aires, 1428, Argentina, andes@gl.fcen.uba.ar, andes@gl.fcen.uba.ar

3

9:45 AM

CENOZOIC PLATE KINEMATICS IN THE EASTERN PACIFIC AND ALONG THE WESTERN RIMS OF THE AMERICAS

ATWATER, Tanya M., Dept. Earth Science, U.C.S.B, Webb Hall, Rm 1006, University of California, Santa Barbara, CA 93106-9630, atwater@geol.ucsb.edu, atwater@geol.ucsb.edu

4

10:10 AM

UPPER MANTLE SEISMIC STRUCTURE BENEATH THE CORDILLERA

GRAND, Steve P., University of Texas at Austin, 1 University Station C1100, Austin, TX 78712-0254, steveg@maestro.geo.utexas.edu, steveg@maestro.geo.utexas.edu

10:35 AM

Break

5

11:00 AM

NEOGENE ARC MAGMATISM IN A CONTINENTAL SETTING FROM PATAGONIA TO ALASKA

KAY, Suzanne Mahlburg, Geological Sciences, Cornell Univ, Snee Hall, Ithaca, NY 14853-1504, smk16@cornell.edu, smk16@cornell.edu

6

11:25 AM

COLLISION AND MOUNTAIN BUILDING ALONG NORTH PACIFIC MARGINS

VON HUENE, Roland, Geology, Univ of California Davis, Department of Geology, University of California, Davis, CA 95616 and RANERO, Cesar R., ICREA, Instituto de Ciencias del Mar, CSIC, Paseo Maritimo de la Barceloneta 37-49, Barcelona, 08003, Spain, rhuene@mindsprings.com, rhuene@mindsprings.com

7

11:45 AM

SOME CONSTRAINTS ON MATERIAL INPUT ALONG THE SOUTH AMERICA CONVERGENT MARGIN

RANERO, Cesar R., ICREA, Instituto de Ciencias del Mar, CMIMA, CSIC, Paseo Maritimo de la Barceloneta 37-49, Barcelona, 08003, Spain, VON HUENE, Roland, Geology, Univ of California Davis, Department of Geology, University of California, Davis, CA 95616, WEINREBE, Wilhelm, Marine Geodynamics, IFM-GEOMAR, Wischhofstrasse 1-3, Kiel, 24148, Germany, REICHERT, Christian J., Geophysics, Marine & Polar Research, BGR - Bundesanstalt für Geowissenschaften und Rohstoffe, POB 51 01 53, Hannover, 30631, Germany, CALAHORRANO, Alcinoe, Instituto de Ciencias del Mar, CSIC, Pg. Maritim de la Barceloneta 37-49, Barcelona, 08003, Spain, SAGE, Francoise, Observatoire océanologique de Villefranche, P. et M. Curie University, BP 48 - La Darse, Villefranche-sur-Mer, 006235, France and COLLOT, Jean-Yves, Observatoire océanologique de Villefranche, IRD, BP 48 - La Darse, Villefranche-sur-Mer, 006235, France, rhuene@mindsprings.com, rhuene@mindsprings.com

8

12:05 PM

ROOT FOUNDERING IN CORDILLERAN ARCS - AN UPDATED REVIEW OF OBSERVATIONAL EVIDENCE, EXPERIMENTAL BACKGROUND AND THEORETICAL MODELING

DUCEA, Mihai N., Geosciences, Univ of Arizona, Tucson, AZ 85721, ducea@geo.arizona.edu, ducea@geo.arizona.edu

12:30 PM

Lunch and Posters

9

2:00 PM

FLAT SLAB SUBDUCTION IN LATIN AMERICA IN THE CONTEXT OF ONGOING SUBDUCTION OF TERTIARY OCEANIC LITHOSPHERE, SUBDUCTING SEAMOUNTS AND RIDGES, AND CONTINENTAL UPPER PLATES: IMPLICATIONS FOR SLAB MORPHOLOGY, SEISMICITY STRUCTURE AND FOCAL MECHANISMS, AND SEISMIC HAZARDS

KIRBY, Stephen H., U.S. Geological Survey, Mail Stop 977, 345 Middlefield Road, Menlo Park, CA 94025, ENGDAHL, Robert, Physics, University of Colorado, Campus Box 390, Boulder, CO 80309, OKAL, Emile A., Geological Sciences, Northwestern University, Evanston, IL 60208 and VILLASEÑOR, Antonio, Institute of Earth Sciences "Jaume Almera" - CSIC, Lluís Solé i Sabarís s/n, Barcelona, 08028, Spain, skirby@usgs.gov, skirby@usgs.gov

10

2:25 PM

PAMPEAN (CHILEAN) FLAT SLAB: GEOPHYSICAL VIEW

PARDO, Mario, Geofisica, Universidad de Chile, Blanco Encalada 2002, Santiago, 6511227, Chile and MONFRET, Tony, UMR Geosciences Azur - IRD, 250 rue Albert Einstein, Valbonne, 06560, France, mpardo@dgf.uchile.cl, mpardo@dgf.uchile.cl

11

2:50 PM

EVOLUTION OF THE PAMPEAN FLAT-SLAB SEGMENT OF THE SOUTHERN CENTRAL ANDES

RAMOS, Victor A., Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Laboratorio de Tectónica Andina, Ciudad Universitaria, Pabellón II, Buenos Aires, 1428, Argentina, andes@gl.fcen.uba.ar, andes@gl.fcen.uba.ar

12

3:15 PM

HORIZONTAL AND “HORIZONTAL” SUBDUCTION ALONG THE MIDDLE SECTOR OF THE BACKBONE OF THE AMERICAS: PARTITIONED SEISMOGENIC STRESS-STRAIN AND ACTIVE DEFORMATION

LÓPEZ, Allan, Engineering Geology, Instituto Costarricense de Electricidad, Box 10032, San José, 1000, Costa Rica, alopezs@ice.go.cr, alopezs@ice.go.cr

13

3:40 PM

THE PERUVIAN FLATSLAB

ALEMAN, Antenor M., Consulting Geologist, 19307 Dickson Pk Dr, Spring, TX 77373, amaleman@gmail.com, amaleman@gmail.com

4:05 PM

Break

14

4:30 PM

RELATION OF FLAT SUBDUCTION TO MAGMATISM AND DEFORMATION IN WESTERN U.S.A

HUMPHREYS, Eugene D., Eugene, OR 97403, gene@newberry.uoregon.edu, gene@newberry.uoregon.edu

15

4:55 PM

THRUSTING, MAGMATISM, AND COLLAPSE OF THE SEVIER OROGENIC WEDGE, WESTERN MONTANA, USA

LAGESON, David R., Dept. of Earth Sciences, Montana State University, Bozeman, MT 59717, lageson@montana.edu, lageson@montana.edu

16

5:15 PM

CONTROLS ON BASEMENT-INVOLVED FORELAND DEFORMATION: A VIEW FROM THE LARAMIDE ROCKY MOUNTAINS, USA

ERSLEV, Eric A., Department of Geosciences, Colorado State Univ, Fort Collins, CO 80523, erslev@cnr.colostate.edu, erslev@cnr.colostate.edu

17

5:35 PM

LARAMIDE AND NEOGENE SHALLOW SUBDUCTION IN MEXICO: CONSTRAINTS AND CONTRASTS

FERRARI, Luca, Centro de Geociencias, UNAM, Campus Juriquilla, Queretaro, Queretaro, 76230, Mexico, luca@geociencias.unam.mx, luca@geociencias.unam.mx

6:00 PM

Posters and Refreshments

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

T1. Plenary I: The Backbone of the Americas