Session: Tectonics I: Extensional Tectonics (2002 Denver Annual Meeting (October 27-30, 2002))

Paper #

Start Time

1

1:00 PM

RUBY MOUNTAINS CORE COMPLEX AS A GUIDE TO EOCENE DEEP CRUSTAL STRUCTURE IN THE ELKO-CARLIN REGION, NEVADA

HOWARD, Keith A., U.S. Geol Survey, MS 975, Menlo Park, 94025, khoward@usgs.gov, khoward@usgs.gov

2

1:15 PM

MULTI-STAGE EXHUMATION HISTORY OF THE OROCOPIA SCHIST IN THE OROCOPIA MOUNTAINS OF SOUTHEAST CALIFORNIA

VUCIC, Ana¹, GROVE, Marty², JACOBSON, Carl E.¹ and PEDRICK, Jane N.¹, (1)Dept. of Geological and Atmospheric Sciences, Iowa State Univ, Ames, IA 50011-3212, (2)Dept. of Earth and Space Sciences, UCLA, Los Angeles, CA 90095-1567, anav@iastate.edu, anav@iastate.edu

3

1:30 PM

ONSET OF EXTENSION IN THE BASIN AND RANGE: BASIN ANALYSIS OF THE EOCENE ELKO FORMATION, NE NEVADA

HAYNES, S.R., HICKEY, K.A., MORTENSEN, J.K. and TOSDAL, R.M., Mineral Deposit Research Unit, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, shaynes@eos.ubc.ca, shaynes@eos.ubc.ca

4

1:45 PM

POST 3-MA INCEPTION OF THE NORTHERN WALKER LANE, NEVADA AND CALIFORNIA, BY REACTIVATION OF NORMAL FAULTS AND NORTHWEST PROPAGATION OF EXTENSION IN THE GREAT BASIN

HENRY, Christopher D., Nevada Bureau of Mines and Geology, Univ of Nevada, Reno, NV 89557 and FAULDS, James E., Nevada Bureau of Mines and Geology, Univ of Nevada, Reno, NV 89557-0088, chenry@unr.edu, chenry@unr.edu

5

2:00 PM

STRATIGRAPHIC EVIDENCE FOR AGES OF DIFFERENT EXTENSIONAL STYLES IN THE SALTON TROUGH, SOUTHERN CALIFORNIA

WINKER, Charles D., Shell Int'l EP, 3737 Bellaire Blvd, Houston, TX 77025 and KIDWELL, Susan M., Department of Geophyscial Sciences, Univ of Chicago, 5734 S. Ellis Avenue, Chicago, IL 60637, Chicago, IL 60637, skidwell@midway.uchicago.edu, skidwell@midway.uchicago.edu

6

2:15 PM

3.3 MA SEA WATER INCURSION OF SAN NICOLÁS AND EL MANGLE BASINS DURING OPENING OF THE PROTO-GULF OF CALIFORNIA, MEXICO

BERRY, Richard W.¹, LEDESMA-VÁZQUEZ, Jorge², JOHNSON, Markes E.³ and BACKUS, David H.³, (1)San Diego State Univ, 5500 Campanile Dr, San Diego, CA 92182-1020, (2)Facultad de Ciencias Marinas, Universidad Autonoma de Baja Calif, Ensenada, Baja Calif, 22800, Mexico, (3)Geosciences Dept, Williams College, Williamstown, MA 01267, rberry@geology.sdsu.edu, rberry@geology.sdsu.edu

7

2:30 PM

TIMING, CAUSE AND ORIGIN OF CURRENT N-S EXTENSIONAL TECTONICS IN WESTERN TURKEY

BOZKURT, Erdin, Department of Geological Engineering, Middle East Technical Univ, Ankara, TR-06531, Turkey and SOZBILIR, Hasan, Department of Geological Engineering, Dokuz Eylul Univ, Izmir, TR-35100, Turkey, erdin@metu.edu.tr, erdin@metu.edu.tr

8

2:45 PM

RIFT-BASIN DEVELOPMENT: NEWARK RIFT BASIN, EASTERN NORTH AMERICA

WITHJACK, Martha Oliver¹, SCHLISCHE, Roy W.¹ and OLSEN, Paul E.², (1)Department of Geological Sciences, Rutgers Univ, Busch Campus, Piscataway, NJ 08854, (2)Lamont-Doherty Earth Observatory, Columbia Univ, RT 9W, Palisades, NY 10964, drmeow3@yahoo.com, drmeow3@yahoo.com

9

3:00 PM

INTERNAL STRUCTURE AND FORMATION OF THE PERIDOTITE RIDGE ON THE WEST IBERIA CONTINENTAL MARGIN

HENNING, Alison T. and SAWYER, Dale S., Department of Earth Science, Rice Univ, 6100 Main Street, Houston, TX 77005, ahenning@rice.edu, ahenning@rice.edu

10

3:15 PM

POSSIBLE LARGE-SCALE, CENOZOIC, LOW-ANGLE NORMAL FAULT IN THE NAMCHE BARWA AREA, EASTERN HIMALAYAN SYNTAXIS

BURCHFIEL, B.C.¹, WANG, Erchie² and HODGES, K.V.¹, (1)EAPS, MIT, 54-1010 MIT, Cambridge, MA 02139, (2)Institute of Geology and Geophyiscs, Chinese Academy of Sciences, P. O. Box 9825, Beijing, 100029, China, bcburch@mit.edu, bcburch@mit.edu

11

3:30 PM

EXTENSIONAL COLLAPSE OF A SMALL OROGENIC PLATEAU AND THE PRODUCTION OF VOLUMINOUS POST-COLLISIONAL GRANITE: AN EXAMPLE FROM THE NEOPROTEROZOIC ARAÇUAÍ OROGEN, EASTERN BRAZIL

WHITTINGTON, Alan, Univ Illinois - Urbana- Champaign, 1301 W Green St, Urbana, IL 61801, PEDROSA-SOARES, Antônio Carlos, Universidade Federal de Minas Gerais-IGC-CPMTC, Campus Pampulha, Belo Horizonte, MG, 31270-901, Brazil, CONNELLY, James, Dept. Geological Sciences, Univ of Texas at Austin, Austin, TX 78712, MARSHAK, Stephen, Dept. of Geology, Univ. of Illinois, 1301 W. Green St, Urbana, IL 61801 and ALKMIM, Fernando, Departamento de Geologia da Escola de Minas, Universidade Federal de Ouro Preto, Campus do Morro do Cruzeiro, Ouro Preto, MG, 35400-000, Brazil, awhittin@uiuc.edu, awhittin@uiuc.edu