Session No. 23 Wednesday, May 2, 2001

1:10 PM-5:00 PM, Sheraton Old Town Hotel: Alvarado AB
S6. Geophysics of the Rio Grande Rift and Southern Rocky Mountains
G. Randy Keller and W. Scott Baldridge, Presiding
Start Time
1:10 PM Introductory Remarks
1:15 PM MIOCENE TO PLEISTOCENE VOLCANISM AND RIFTING, WESTERN SNAKE RIVER PLAIN, SOUTHWESTERN IDAHO: BONNICHSEN, Bill and GODCHAUX, Martha M., Idaho Geol Survey, Morrill Hall Rm 332, Moscow, ID 83844-3014, billb@uidaho.edu
1:30 PM THE NORTH AND SOUTH PARK BASINS OF CENTRAL COLORADO: AN INTEGRATED GEOPHYSICAL STUDY: TREVINO, Leandro and KELLER, G. R., Geological Sciences, Univ of Texas at El Paso, 500W. University, El Paso, TX 79968, trevino@geo.utep.edu
1:45 PM EOCENE TO RECENT, NORTHWEST-DIRECTED EXTENSION OF THE NORTH AMERICAN CORDILLERA: A KINEMATIC LINK BETWEEN THE EXTENSION IN THE NORTHERN BASIN AND RANGE PROVINCE AND THE OPENING OF THE RIO GRANDE RIFT: WAWRZYNIEC, Tim F., Univ Texas - Austin, University Station, PO Box X, Austin, TX 78713-8924, tim.wawrzyniec@beg.utexas.edu and MCGREW, Allen, Department of Geology, The Univ of Dayton, Dayton, OH 45469,
2:00 PM ARCHITECTURE OF THE SOUTHERN ESPANOLA BASIN (RIO GRANDE RIFT)AND FLANK UPLIFT ADJACENT TO THE LA BAJADA FAULT: BALDRIDGE, W. Scott1, FERGUSON, John F.2, BRAILE, Lawrence W.3, BIEHLER, Shawn4, JIRACEK, George R.5, GILPIN, Bernard E.6, ALUMBAUGH, David L.7, GRATWICK, Douglas S.8, RICHARDS, Trevor L.2, and HASTEROK, Derrick P.9, (1) Earth and Environ. Sci. Div, Los Alamos National Lab, M. S. D462, Los Alamos, NM 87545, sbaldridge@lanl.gov, (2) Geosciences Dept, Univ Texas at Dallas, P.O. Box 688, Richardson, TX 75080, (3) Purdue Univ, 1397 Civil Engineering, West Lafayette, IN 47907-1397, (4) Dept. Geol. Sci, University of California, Riverside, CA 92521, (5) Dept. Geol. Sci, San Diego State Univ, San Diego, CA 92182, (6) Physics Department, Golden West College, Huntington Beach, CA 92647, (7) Dept. Civil and Environ. Engin, Univ of Wisconsin, Madison, WI 53706, (8) Dept. Geological and Environ. Sci, Stanford Univ, Stanford, CA 94305-2215, (9) Div. Geol. and Planet. Sci, California Inst. Technol, Pasadena, CA 91125
2:15 PM ASSESSING RUPTURED HANGING-WALL HINGE-ZONE UPLIFTS IN THE NORTHERN RIO GRANDE RIFT, NEW MEXICO: SMITH, Gary A., Department of Earth and Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131, gsmith@unm.edu and ROY, Mousumi, Dept. of Earth and Planetary Sciences, Univ New Mexico, Albuquerque, NM 87131-1116,
2:30 PM DEFORMATION AT CONTINENTAL RIFTS: INTERPLAY OF FLEXURE AND FAULTING ALONG THE RIO GRANDE RIFT, NEW MEXICO: ROY, Mousumi, Department of Earth and Planetary Sciences, Univ of New Mexico, 141 Northrop Hall, Albuquerque, NM 87131, mroy@unm.edu.
2:45 PM NEW PERSPECTIVES ON RIFT BASIN STRUCTURE IN NEW MEXICO BASED ON SEISMIC REFLECTION AND GRAVITY DATA: GILLESPIE, Cindy L. and KELLER, G. Randy, Department of Geological Sciences/ PACES, Univ of Texas at El Paso, El Paso, TX 79968, gillespie@geo.utep.edu
3:00 PM Break
3:15 PM COMPARISONS BETWEEN CRUSTAL STRUCTURE IN THE BASIN AND RANGE PROVINCE OF SOUTHERN NEVADA, CALIFORNIA, AND WESTERN ARIZONA AND THE RIO GRANDE AND KENYA RIFTS: HICKS, Nigel O.1, KELLER, G. Randy2, MILLER, Kate C.1, MONTANA, Carlos1, DURAN, Alejandro1, and MICKUS, Kevin3, (1) Department of Geological Sciences, Univ of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, hicks@geo.utep.edu, (2) Department of Geological Sciences/ PACES, Univ of Texas at El Paso, El Paso, TX 79968, (3) Department of Geosciences, Southwest Missouri State Univ, Sprinfield, MO 65804
3:30 PM AN INTEGRATED ANALYSIS OF THE JORNADA DEL MUERTO BASIN IN SOUTH-CENTRAL NEW MEXICO UTILIZING REMOTE SENSING AND GEOPHYSICAL METHODS: VILLALOBOS, Joshua I.1, KELLER, G. R.1, GILLESPIE, Cindy L.1, and PINGITORE, N. E.2, (1) Department of Geological Sciences/ PACES, Univ of Texas at El Paso, El Paso, TX 79968, joshuav@geo.utep.edu, (2) Department of Geological Sciences, Univ of Texas at El Paso, El Paso, TX 79968
3:45 PM SEGMENTATION OF THE RIO GRANDE ALLUVIAL SURFACE AND EVOLUTION OF THE RIO GRANDE RIFT: LANGFORD, Richard P., Univ Texas - El Paso, 500 W University Ave, El Paso, TX 79968-0555, langford@geo.utep.edu.
4:00 PM DIGITAL GEOLOGIC MAP AND DATABASE OF THE COLLIER DRAW-BENAVIDEZ RANCH QUADS, NEW MEXICO: MULLINS, Kevin F., Department of Interior, U.S. Geol Survey, 2255 N. Gemini Dr, Flagstaff, AZ 86001, kmullins@usgs.gov and SAWYER, David A., Department of Interior, U.S. Geol Survey, MS 913, Box 25046, Denver Field Center, Denver, CO 80225-0046, dsawyer@usgs.gov,
4:15 PM PALEOCHANNEL PIERCING-POINT ANALYSIS OF THE MISSOURI BOOTHEEL LINEAMENT, NEW MADRID SEISMIC ZONE: NUNN, Curtis L., Dept. of Geosciences, Univ. of Arkansas, OZAR-113, Fayetteville, AR 72701-1201, cnunn@uark.edu, GUCCIONE, Margaret J., Dept. of Geosciences, Univ. Arkansas, OZAR-113, Fayetteville, AR 72701-1201, and MARPLE, Ronald T., Western Atlas Geophysics, Houston, TX,
4:30 PM Discussion

Back to the Rocky Mountain (53rd) and South-Central (35th) Sections, GSA, Joint Annual Meeting (April 29–May 2, 2001)