Session: T2. Plateau and Cordillera Uplift I (Backbone of the Americas

Paper #

Booth #

1

NORTHERN CANADIAN CORDILLERA AND CENTRAL ANDES/ALTIPLANO: STAGES OF DEVELOPMENT OF CURRENTLY ACTIVE HIGH MOUNTAIN PLATEAUX

HYNDMAN, Roy D., Pacific Geoscience Centre, Geol Survey of Canada, 9860 W. Saanich Road, Sidney, BC V8L 4B2, Canada, MAZZOTTI, Stephane, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC V8L 4B2, Canada, CURRIE, Claire A., Department of Oceanography, Dalhousie University, Halifax, BC B3H 4J1, Canada and LEONARD, Lucinda, School of Earth and Ocean Sciences, Univ of Victoria, Victoria, BC V8W 3P6, Canada, rhyndman@nrcan.gc.ca, rhyndman@nrcan.gc.ca

2

HOW DO YOU BUILD THE LARGEST BATHOLITH IN THE PHANEROZOIC? EVIDENCE FOR THREE MAGMATIC FLARE-UPS IN THE COAST PLUTONIC COMPLEX OF BRITISH COLUMBIA, CANADA

PEARSON, David M. and DUCEA, Mihai N., Department of Geosciences, University of Arizona, Gould-Simpson Bldg, Tucson, AZ 85721-0077, dpearson@geo.arizona.edu, dpearson@geo.arizona.edu

3

JURASSIC – TERTIARY EVOLUTION OF THE CENTRAL COAST PLUTONIC COMPLEX: CONTROLS ON OVER 120 MILLION YEARS OF MAGMATISM

MAHONEY, J. Brian, Department of Geology, University of Wisconsin-Eau Claire, Eau Claire, WI 54702, GORDEE, Sarah, Earth and Ocean Sciences, Univ of British Columbia, 6229 Stores Road, Vancouver, BC V6T 1Z4, Canada, HAGGART, James W., Geol Survey Canada, 101-605 Robson St, Vancouver, BC V6B 5J3, Canada, FRIEDMAN, Richard M., Pacific Centre for Isotopic and Geochemical Research, Univ of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, DIAKOW, Larry, British Columbia Geological Survey, Victoria, BC V8W 9N3, Canada and WOODSWORTH, Glenn J., Geol Survey of Canada, 101-605 Robson St, Vancouver, BC V6B 5J3, sgordee@eos.ubc.ca, sgordee@eos.ubc.ca

4

LITHOSPHERIC ARCHITECTURE OF THE KLAMATH MOUNTAINS PROVINCE, CASCADIA SUBDUCTION ZONE, CALIFORNIA AND OREGON, USA

YOSHINOBU, Aaron S., Dept. of Geosciences, Texas Tech Univ, Lubbock, TX 79409-1053 and GURROLA, Harold, Geosciences, Texas Tech, Lubbock, TX 79409, aaron.yoshinobu@ttu.edu, aaron.yoshinobu@ttu.edu

5

JOINT-ZONE DEVELOPMENT IN THE NAVAJO SANDSTONE OF THE COLORDO PLATEAU: EVIDENCE FOR CORDILLERAN RELAXATION, ZION NATIONAL PARK, UTAH

ENGELDER, Terry, Department of Geosciences, The Pennsylvania State University, 334A Deike Building, University Park, PA 16802 and ROGERS, Christie M., Geosciences, The Pennsylvania State University, 336 Deike Building, University Park, PA 16802, jte2@psu.edu, jte2@psu.edu

6

DELAMINATION ORIGIN FOR COLUMBIA RIVER FLOOD BASALTS AND WALLOWA MOUNTAIN UPLIFT IN NE OREGON

HALES, Tristin C., Eugene, 97403, HUMPHREYS, Eugene D., Geological Sciences, University of Oregon, Eugene, 97403 and ABT, David L., Geological Sciences, Brown University, 324 Brook St. Box 1846, Providence, 02912, David_Abt@brown.edu, David_Abt@brown.edu

7

POST-MAGMATIC EXHUMATION AND EROSION OF THE NORTHERN SIERRA NEVADA, CALIFORNIA: INSIGHTS FROM (U-TH)/HE THERMOCHRONOLOGY

CECIL, M. Robinson¹, DUCEA, Mihai N.¹, REINERS, Peter W.² and CHASE, Clement G.¹, (1)Geosciences, Univ of Arizona, Tucson, AZ 85721, (2)Geology and Geophysics, Yale Univ, PO Box 208109, New Haven, CT 06520-8109, mrc@geo.arizona.edu, mrc@geo.arizona.edu

8

STRUCTURAL EVOLUTION OF THE BIG MARIA SYNCLINE, SE CALIFORNIA

SALEM, Anthony C.¹, REYNOLDS, Stephen J.², GEIER, Jeff² and KARLSTROM, Karl E.³, (1)Earth and Planetary Sciences, University of New Mexico, Northrop Hall, Albuquerque, NM 87131-1116, (2)Geological Sciences, Arizona State University, Tempe, AZ 85287-1404, (3)Department of Earth and Planetary Science, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131, acsalem@unm.edu, acsalem@unm.edu

9

IS EROSION DOMINATED BY LARGE, RARE, ROCK AVALANCHES? EXAMPLES FROM THE EASTERN SIERRA NEVADA AND OWENS VALLEY

PHINNEY, Robert A., Geosciences, Princeton Univ, Princeton, NJ 08544, rphinney@princeton.edu, rphinney@princeton.edu

10

MODELAJE CORTICAL DEL ESCUDO DE GUAYANA, VENEZUELA, CON BASE EN DATOS GRAVIMETRICOS Y MAGNETICOS

RODRIGUEZ, Inirida¹, GRANDE, Sebastian², ADRIÁN, Natalia¹, AZUAJE, Rafael¹, DIAZ, Alexander³, ESCORIHUELA, Nanvir¹, LOZANO, Liz¹, MORGADO, Leonardo¹, PÉREZ, Maxlyn¹ and VARGAS, Emgelberth¹, (1)Geofisica, Universidad Central de Venezuela, Caracas- Ciudad Universitaria Ingenierìa Escuela de Geología Minas y Geofisica, Caracas, Venezuela, (2)Geologia, Universidad Central de Venezuela, Caracas- Ciudad Universitaria Ingenierìa Escuela de Geología Minas y Geofisica, Caracas, Venezuela, (3)Geofisica, Universidad Central de Venezuela, Caracas, Venezuela, iniromil@yahoo.com.mx, iniromil@yahoo.com.mx

11

ANDINOTYPE VS. INTRAPLATE OROGENESIS – HIGH PLATEAUS AND LOWER CRUSTAL STRUCTURES

DICKERSON, Patricia Wood, Department of Geosciences - C1100, University of Texas at Austin, Austin, TX 78712, patdickerson@earthlink.net, patdickerson@earthlink.net

12

PLATEAU FORMATION IN A SANDBOX – MODELLING THE ANDEAN STRAIN EVOLUTION

SCHEMMANN, Kerstin, KUKOWSKI, Nina and ONCKEN, Onno, Lithosphere Dynamics, GeoForschungsZentrum Potsdam, Telegrafenberg, Potsdam, 14473, Germany, kschem@gfz-potsdam.de, kschem@gfz-potsdam.de

13

VARIATIONS IN BOTH STRUCTURAL STYLE AND STRATIGRAPHY IN THE EASTERN FOLD AND THRUST BELT OF THE PERUVIAN ANDES ACROSS THE NORTHERN BOUNDARY OF THE ANDEAN PLATEAU

GOTBERG, Nicole, Dept of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, MCQUARRIE, Nadine, Department of Geosciences, Princeton Univ, Guyot Hall, Princeton, NJ 08544 and TINTAYA, Daniel, Geologia, Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru, ngotberg@princeton.edu, ngotberg@princeton.edu

14

EL BOSQUE PALEONTOLOGICO PIEDRA CHAMANA (NORTHERN PERUVIAN ANDES): A RECORD OF LOWLAND TROPICAL FOREST PRESERVED IN VOLCANICLASTIC ROCKS

WOODCOCK, Deborah¹, MEYER, Herbert², DUNBAR, Nelia³ and MCINTOSH, William³, (1)Dept. of Geography, Clark Univ, Worcester, MA 01610, (2)US National Park Service, Florissant Fossil Beds National Monument, Florissant, CO 80816, (3)New Mexico Institute of Mining and Technology, Socorro, NM 87801, DWoodcock@clarku.edu, DWoodcock@clarku.edu

15

TECTONICS OF THE WESTERN MARGIN OF THE ALTIPLANO IN SOUTHERN PERU

SCHILDGEN, Taylor F., WHIPPLE, Kelin X., HODGES, Kip V. and PRINGLE, Malcolm S., Earth, Atmospheric and Planetary Sciences Department, Massachusetts Institute of Technology, 77 Massachusetts Ave 54-1022, Cambridge, MA 02139, tfs@mit.edu, tfs@mit.edu

16

UPLIFT OF THE BOLIVIAN OROCLINE COASTAL AREAS BASED ON GEOMORPHOLOGIC EVOLUTION OF MARINE TERRACES AND ABRASION SURFACES: PRELIMINARY RESULTS

SAILLARD, Marianne¹, AUDIN, Laurence², HÉRAIL, Gérard³, MARTINOD, Joseph⁴, REGARD, Vincent⁴, MACHARÉ, José⁵, ORTLIEB, Luc⁶, HALL, Sarah R.⁷, FARBER, Daniel L.⁸ and BONDOUX, Francis³, (1)IRD-INGEMMET, casilla 18-1209, lima, 18, Peru, (2)IRD, casilla 18-1209, lima 18, Peru, (3)IRD, Casilla 53390, correo central, santiago, Chile, (4)Laboratoire des Mécanismes et Transferts en Géologie, LMTG-UMR 5563, Observatoire Midi-Pyrénées - 14 Avenue Edouard Belin, Toulouse, 31400, France, (5)INGEMMET, Av. Canadá 1470, San Borja, Lima, 41, Peru, (6)PALEOTROPIQUE, IRD, 32 avenue Henri-Varagnat, Bondy, F-93143, France, (7)Dept. of Earth Sciences, University of California, Santa Cruz, CA CA 95060, (8)Lawrence Livermore National Lab, MS L-201, PO Box 808, Livermore, CA 94551, saillard@lmtg.obs-mip.fr, saillard@lmtg.obs-mip.fr

17

EOCENE TO RECENT EXHUMATION PATTERNS CORRELATED WITH DEFORMATION ACROSS 200 KM OF THE CENTRAL ANDEAN FOLD-THRUST BELT, NORTHERN BOLIVIA

BARNES, Jason B., Geological Sciences, University of Michigan, 2534 C.C. Little Building, 1100 N. University, Ann Arbor, MI 48109, EHLERS, Todd A., Department of Geological Sciences, University of Michigan, 1100 N. University, 2534 CC Little, Ann Arbor, MI 48109-1005 and MCQUARRIE, Nadine, Department of Geosciences, Princeton Univ, Guyot Hall, Princeton, NJ 08544, barnesja@umich.edu, barnesja@umich.edu

18

UPPER OLIGOCENE BACK ARC MAGMATISM AND THE ONSET OF THE PLATEAU UPLIFT IN THE BOLIVIAN ANDES

JIMÉNEZ, Néstor H.¹, SANTIVAÑEZ, Reynaldo¹, LÓPEZ, Shirley² and GORINOVA, Elena¹, (1)Instituto de Investigaciones Geológicas y del Medio Ambiente, Universidad ;Mayor de San Andrés, Casilla 3-1465, La Paz, Bolivia, (2)Dirección de Geología, Servicio Nacional de Geología y Técnico de Minas, Casilla 2729, La Paz, Bolivia, nesjim@megalink.com, nesjim@megalink.com

19

CRETACEOUS AND PALEOGENE CONTRIBUTIONS TO ANDEAN OROGENSIS ON THE WESTERN MARGIN OF THE CENTRAL ANDEAN PLATEAU, PRECORDILLERA, CHILE, 20°30'-22°30'S

TOMLINSON, Andrew J. and BLANCO, Nicolás, Servicio Nacional de Geología y Minería, Avda. Santa María 0104, Santiago, Chile, atomlins@sernageomin.cl, atomlins@sernageomin.cl

20

SICHAL FORMATION: AN EOCENE-EARLY OLIGOCENE BASIN SYNTECTONIC TO THE INCAIC OROGENIC EVENT AND CONTEMPORANEOUS TO EMPLACEMENT OF PORPHYRY COPPER RELATED PLUTONS, II REGION OF ANTOFAGASTA, CHILE

BLANCO, Nicolás, Servicio Nacional de Geología y Minería, Avda. Santa María 0104, Santiago, Chile and TOMLINSON, Andrew J., Servicio Nacional de Geología y Minería, Av. Sta. María 0104, Providencia, Santiago, Chile, atomlins@sernageomin.cl, atomlins@sernageomin.cl

21

CRUSTAL ROTATION IN THE ANDEAN FOREARC OF NORTHERN CHILE: MECHANISMS AND TIMING

TAYLOR, Graeme K. and DASHWOOD, Ben, School of Earth, Ocean & Environmental Science, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, United Kingdom, GTaylor@plymouth.ac.uk, GTaylor@plymouth.ac.uk

22

KINEMATICS OF THE PLATE BOUNDARY ZONE AND UPLIFT OF THE ANDEAN PLATEAU

LÓPEZ, Alberto¹, JURDY, Donna², STEIN, Seth¹, LIU, Mian³, DIXON, Timothy⁴, NORABUENA, Edmundo⁴ and HINDLE, David⁵, (1)Geological Sciences, Northwestern Univ, Locy Hall, 1850 Campus Drive, Evanston, IL 60208, (2)Earth and Planetary Sciences, Northwestern University, Locy Hall, 1850 Campus Drive, Evanston, IL 60208, (3)Department of Geological Sciences, Univ of Missouri-Columbia, 101 Geology Building, Columbia, MO 65211, (4)RSMAS-MGG, Univ of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, (5)Geological Sciences, Michigan State Univ, 206 Nat Sci Building, East Lansing, MI 48824-1115, alberto@earth.nothwestern.edu, alberto@earth.nothwestern.edu

23

LITHOSPHERIC GEOID ANOMALIES AND THE PALEOSTRUCTURE OF THE ALTIPLANO: IMPLICATIONS FOR PLATEAU UPLIFT MECHANISMS

COBLENTZ, David D.¹, SUSSMAN, Aviva J.¹ and CHASE, Clement G.², (1)Department of Earth and Planetary Sciences, University of New Mexico, Northrop Hall, Albuquerque, NM 87131, (2)Geosciences, University of Arizona, Gould Simpson, Tucson, AZ 85721, coblentz@lanl.gov, coblentz@lanl.gov

24

EVIDENCE FOR LATE MIOCENE UPLIFT BY LONG-WAVELENGTH ROTATION OF WESTERN FLANK OF ALTIPLANO SEGMENT OF CENTRAL ANDES 20^O30' - 21^O30'S, CHILE

NESTER, Peter L., Department of Earth and Atmospheric Sciences, Cornell University, 2140 Snee Hall, Ithaca, NY 14853, JORDAN, Teresa E., Department of Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, BLANCO, Nicolás, SERNAGEOMIN, Santa María 0104, Casilla 10465, Santiago, Chile, HOKE, Gregory D., Earth and Environmental Sciences, University of Rochester, 227 Hutchinson Hall, Rochester, NY 14627 and TOMLINSON, Andrew J., SERNAGEOMIN, Santa Maria 0104, Casilla 10465, Santiago, Chile, pn21@cornell.edu, pn21@cornell.edu

25

USING UPPER PLATE NORMAL FAULTS TO UNDERSTAND SUBDUCTION ZONE DYNAMICS IN THE NORTHERN CHILEAN FOREARC

LOVELESS, John P.¹, ALLMENDINGER, Richard W.¹, PRITCHARD, Matthew E.¹ and GONZÁLEZ, Gabriel², (1)Department of Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, (2)Departamento de Ciencias Geológicas, Universidad Católica del Norte, Casilla 1280, Antofagasta, Chile, jpl34@cornell.edu, jpl34@cornell.edu

26

TELESEISMIC TOMOGRAPHIC IMAGES OF THE CENTRAL ANDES AT 21°S AND 25.5°S: AN INSIDE LOOK AT THE ALTIPLANO AND PUNA PLATEAUS

HEIT, Benjamin¹, KOULAKOV, Ivan¹, YUAN, Xiaohui¹, ASCH, Guenter¹, KIND, Rainer¹ and WOELBERN, Ingo², (1)Seismology, GFZ, Telegrafeberg, Potsdam, 14473, Germany, (2)Geophysik, Johann Wolfgang Goethe-Universität, Feldbergstr. 47, Frankfurt (Main), 60323, Germany, heit@gfz-potsdam.de, heit@gfz-potsdam.de

27

VILAMA CALDERA: ONSET OF LARGE ERUPTIONS DURING IGNIMBRITE FLARE-UP IN PUNA-REGION, AND ITS INDICATIONS OF STRESS FIELD ORIENTATION

SOLER, Miguel M., Instituto de Geología y Minería, Universidad Nacional de Jujuy, San Salvador de Jujuy / Jujuy, AL 4600, Argentina, COIRA, Beatriz, Instituto de Geología y Mineria, Universidad Nacional de Jujuy, Av. Bolivia 1661, San Salvador de Jujuy, 4600, Argentina, KAY, Suzanne Mahlburg, Dept. Geological Sciences, Cornell Univ, Snee Hall, Ithaca, NY 14853 and CAFFE, Pablo J., Instituto de Geología y Minería, Universidad Nacional de Jujuy, San Salvador de Jujuy / Jujuy, 4600, Argentina, msoler@idgym.unju.edu.ar, msoler@idgym.unju.edu.ar

28

MAGNETIC FABRIC AND FLOW DIRECTIONS FROM THE GRANADA IGNIMBRITE, NORTHERN PUNA, ARGENTINA

SINGER, Silvia E., INGEODAV. Depto.Cs Geológicas, Universidad de Buenos Aires, Ciudad Universitaria, Pab.II, Buenos Aires, 1428, Argentina, VILAS, Juan Francisco, Depto.Cs Geológicas, Universidad de Buenos Aires-CONICET, Ciudad Universitaria, Pab.II, Buenos Aires, 1428, Argentina, SOMOZA, Rubén, Depto.Cs.Geológicas, Universidad de Buenos Aires-CONICET, Ciudad Universitaria, Pab.II, Buenos Aires, 1428, Argentina and COIRA, Beatriz, Instituto de Geología y Mineria, Universidad Nacional de Jujuy-CONICET, Av. Bolivia 1661, San Salvador de Jujuy, 4600, Argentina, Singer@gl.fcen.uba.ar, Singer@gl.fcen.uba.ar

29

THE PAIRIQUE CORDIERITE-BIOTITE DACITES: A CLUE TO THE PETROGENESIS OF PERALUMINOUS MAGMAS IN THE APVC REGION

CAFFE, Pablo J., Instituto de Geologia y Minería, Universidad Nacional de Jujuy - CONICET, Av Bolivia 1661, San Salvador de Jujuy, 4600, Argentina and TRUMBULL, Robert B., Geoforschung Zentrum, Telegrafenberg A-50, Potsdam, 14473, Germany, pabcaffe@idgym.unju.edu.ar, pabcaffe@idgym.unju.edu.ar

30

EOCENE DETRITAL RECORD OF THE ARGENTINE PUNA: IMPLICATIONS FOR EARLY PLATEAU DEVELOPMENT

CARRAPA, Barbara, Institute for Geosciences, Potsdam University, K.-Liebknecht-Str.24/25, Haus27, Golm-Potsdam, D-14476, Germany and DECELLES, Peter G., Department of Geosciences, University of Arizona, Tucson, AZ 85721, carrapa@geo.uni-potsdam.de, carrapa@geo.uni-potsdam.de

31

EXTENSION IN THE PUNA-ALTIPLANO PLATEAU SINCE 1-2 MA: LITHOSPHERIC DELAMINATION, LOWER CRUSTAL FLOW OR GRAVITATIONAL COLLAPSE?

SCHOENBOHM, Lindsay, Dept. of Geoscience, Ohio State University, 275 Mendenhall Laboratory, Columbus, OH 43210 and STRECKER, Manfred R., Institute for Geosciences, Potsdam University, K.-Liebknecht-Str.24/25, Haus27, Golm-Potsdam, D-14476, Germany, schoenbohm.1@osu.edu, schoenbohm.1@osu.edu

32

NEOGENE TEPHROSTRATIGRAPHY OF NORTHWESTERN ARGENTINA

HYNEK, S.A.¹, PASSEY, Benjamin H.², BROWN, Francis H.², CERLING, Thure E.³, SOBEL, Edward R.⁴ and STRECKER, Manfred R.⁴, (1)Department of Geology & Geophysics, University of Utah, 135S. 1460E., RM 719, Salt Lake City, UT UT84112-0111, (2)Department of Geology and Geophysics, Univ of Utah, 135 S. 1460 E, Salt Lake City, UT 84112, (3)Geology & Geophysics, University of Utah, 135 S. 1460 East Room 719, Salt Lake City, UT 84112, (4)Institute for Geosciences, Potsdam University, K.-Liebknecht-Str.24/25, Haus27, Golm-Potsdam, D-14476, Germany, hynek@earth.utah.edu, hynek@earth.utah.edu

33

FRACTURE-CONTROLLED ASCENT AND EMPLACEMENT OF THE CA. 14.4 MA LAS BURRAS MONZODIORITIC PLUTON DURING SINISTRAL STRIKE-SLIP FAULTING OF THE PUNA AND EASTERN CORDILLERA (SALTA, NW ARGENTINA)

TUBÍA, José María¹, HONGN, Fernando², VEGAS, Néstor³ and ARANGUREN, Aitor¹, (1)Geodinámica, Universidad del País Vasco, Campus de Leioa, Bilbao, 48080, Spain, (2)CONICET. Facultad de Ciencias Naturales, Universidad Nacional de Salta, Buenos Aires,177, Salta, 4400, Argentina, (3)Geodinámica, Universidad del país vasco, Campus de Leioa, Bilbao, 48080, Spain, jm.tubia@ehu.es, jm.tubia@ehu.es

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

T2. Plateau and Cordillera Uplift I