2007 GSA Denver Annual Meeting (28–31 October 2007)

Session No. 101
Monday, 29 October 2007: 1:30 PM-5:30 PM

T82. The Structure, Composition and Evolution of the Lithosphere of Western North America II

GSA Geophysics Division; GSA Structural Geology and Tectonics Division

 

Walter D. Mooney, Catherine M. Snelson, Eugene Humphreys and Richard C. Aster, Advocates
Paper #
Start Time
1
1:30 PM
A NEW LOOK AT LITHOSPHERIC STRUCTURE IN THE SOUTHERN ROCKY MOUNTAIN-RIO GRANDE RIFT REGION
KELLER, G. Randy, School of Geology and Geophysics, University of Oklahoma, 100 East Boyd, Norman, OK 73019 and SNELSON, Catherine, Department of Earth & Environmental Science, New Mexico Tech, Socorro, NM 87801, grkeller@ou.edu, grkeller@ou.edu
2
1:45 PM
MANTLE STRUCTURE OF THE COLORADO PLATEAU AND ITS MARGINS REVEALED BY LA RISTRA
ASTER, Richard C.1, SINE, Christopher R.2, WANG, Xinglin3, WILSON, David C.4, NI, James3, GRAND, Stephen P.2 and BALDRIDGE, W. Scott5, (1)Department of Earth and Enviromenal Science, New Mexico Tech, Socorro, NM 87801, (2)Department of Geological Science, University of Texas, Austin, TX 78712, (3)Department of Physics, New Mexico State University, Las Cruces, NM 88003, (4)USGS Hawaiian Volcano Observatory, Hawaii National Park, HI 96718, (5)Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM 87545, aster@ees.nmt.edu, aster@ees.nmt.edu
3
2:00 PM
ELEVATED MIOCENE GEOTHERMS ON THE HIGH PLAINS OF EASTERN NEW MEXICO AND THE TEXAS PANHANDLE FROM APATITE FISSION-TRACK AND (U-TH)/HE THERMOCHRONOMETRY
FLOWERS, Rebecca, Department of Geological Sciences, University of Colorado, Campus Box 399, 2200 Colorado Ave, Boulder, CO 80309 and KELLEY, Shari, Dept. of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM 87801, rebecca.flowers@colorado.edu, rebecca.flowers@colorado.edu
4
2:15 PM
TIMING OF EXHUMATION, DEFORMATION AND FLUID-FLOW PRESERVED IN MICROTEXTURALLY COMPLEX K-FELDSPAR, SANGRE DE CRISTO RANGE, NEW MEXICO
SANDERS, Robert E.1, HEIZLER, Matthew T.1, PARSONS, Ian2 and CHAMBERLAIN, K.3, (1)Department of Earth and Environmental Sci, NM Tech, 801 Leroy Place, Socorro, NM 87801, (2)grant Institute of Earth Sci, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JW, United Kingdom, (3)Department of Geology and Geophysics, University of Wyoming, 1100 University Ave, Laramie, WY 82071, sanders@nmt.edu, sanders@nmt.edu
5
2:30 PM
USING XENOLITHS TO EXPLORE VARIATIONS IN UPPER MANTLE COMPOSITION AND THE RELATION OF COMPOSITION TO SEISMIC VELOCITY STRUCTURE BENEATH THE COLORADO PLATEAU
CALLAHAN, Caitlin N.1, ROY, Mousumi1 and CONDIE, Kent C.2, (1)Department of Earth and Planetary Sciences, University of New Mexico, MSCO3-2040, 1 University of New Mexico, Albuquerque, NM 87131-0001, (2)Dept of Earth & Environmental Science, New Mexico Tech, MSEC 208, 801 Leroy Place, Socorro, NM 87801, ccallaha@unm.edu, ccallaha@unm.edu
6
2:45 PM
EXTENSION IN THE COLORADO PLATEAU/BASIN AND RANGE TRANSITION ZONE, CENTRAL UTAH: AN ACTIVE OR PASSIVE PROCESS?
HASTEROK, Derrick, Geology and Geophysics, University of Utah, 135 S 1460 E WBB Rm 709, Salt Lake City, UT 84112, WANNAMAKER, Philip, Energy & Geoscience Institute, University of Utah, 423 Wakara Way, Suite 300, Salt Lake City, UT 84108, CHAPMAN, David S., Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112 and DOERNER, William M., Quantec Geoscience, 8565 White Fir St, Reno, NV 89523, dhasterok@mines.utah.edu, dhasterok@mines.utah.edu
7
3:00 PM
A PRELIMINARY SEISMIC RECEIVER FUNCTION STUDY OF CRUSTAL COMPOSITION AND THICKNESS ACROSS THE BASIN AND RANGE-COLORADO PLATEAU TRANSITION ZONE IN ARIZONA
ABBOTT, Lon D., Geological Sciences, University of Colorado, UCB 399, Boulder, CO 80309 and FOUCH, Matthew J., K. Young Consulting, Washington, DC 20005, lon.abbott@colorado.edu, lon.abbott@colorado.edu
 
3:15 PM
Break
8
3:30 PM
INTERPRETATIONS OF THE SEISMIC STRUCTURE AT CIMA VOLCANIC FIELD FROM MANTLE XENOLITHS: AN INTEGRATED STUDY OF GEOLOGY AND GEOPHYSICS IN WALKER LANE
CARDON, Keith P., Department of Geological Sciences, University of Texas at El Paso, 500 W. University, El Paso, TX 79968, KELLER, G. Randy, School of Geology and Geophysics, The University of Oklahoma, 100 East Boyd Street, Norman, OK 73019, REN, Minghua, Dept. of Geological Sciences, Univ of Texas at El Paso, El Paso, TX 79968 and ANTHONY, Elizabeth Y., Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, kpcardon@miners.utep.edu, kpcardon@miners.utep.edu
9
3:45 PM
STABILIZATION AND DESTABILIZATION OF CONTINENTAL LITHOSPHERE: PRESERVATION OF DYNAMIC PROCESSES IN NORTH AMERICA'S LARGEST SAMPLE OF CONTINENTAL LOWER CRUST
DUMOND, Gregory, Geosciences, Univ of Massachusetts, 611 N. Pleasant St, Amherst, MA 01003, WILLIAMS, Michael, Department of Geosciences, University of Massachusetts, Amherst, MA 01003-9297, MAHAN, Kevin, Geological Sciences, University of Colorado, Campus Box 399, 2200 Colorado AVE, Boulder, CO 80309, FLOWERS, Rebecca, Department of Geological Sciences, University of Colorado, Campus Box 399, 2200 Colorado Ave, Boulder, CO 80309, GONCALVES, Philippe, Département des Géosciences, Université de Franche-Comté, 16 route de Gray, Besançon, 25030, France, MCLEAN, Noah, Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 and BOWRING, Samuel, Dept. of Earth, Atmospheric, and Planetary Sciences, Mass Inst. of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, gdumond@geo.umass.edu, gdumond@geo.umass.edu
10
4:00 PM
MIOGEOCLINAL STRATA IN HIGH SIERRA NEVADA PENDANTS: DETRITAL ZIRCON AGES REVEAL ADDITIONAL EVIDENCE FOR A CRETACEOUS “MOJAVE-SNOW LAKE FAULT” (MSLF)
MEMETI, Vali1, GEHRELS, George E.2, PATERSON, Scott3 and THOMPSON, Jeffrey3, (1)Department of Earth and Planetary Sciences, Washington University in St. Louis, 1 Brookings Dr, St. Louis, MO 63130-4862, (2)Department of Geosciences, Univ of Arizona, Tucson, AZ 85721, (3)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089-0740, memeti@usc.edu, memeti@usc.edu
11
4:15 PM
CRUSTAL SHEAR-WAVE VELOCITY STRUCTURE ACROSS CALIFORNIA AND NEVADA FROM AMBIENT NOISE SURFACE WAVE MEASUREMENTS
MOSCHETTI, Morgan P., US Geological Survey, Golden, CO 80401, RITZWOLLER, Michael H., Department of Physics, Univ of Colorado, Campus Box 390, Boulder, CO 80303-0390 and SHAPIRO, Nikolai M., CNRS, IPGP, 4 place Jussieu, Paris, 75005, France, morganm@ciei.colorado.edu, morganm@ciei.colorado.edu
12
4:30 PM
NEW TOOL FOR 3D THERMO-MECHANICAL MODELING OF LITHOSPHERIC SCALE DEFORMATION WITH APPLICATION FOR EVOLUTION OF SAN ANDREAS FAULT SYSTEM
POPOV, Anton, Geodynamic modeling, GeoForschungsZentrum, Telegrafenberg E326, Potsdam, D-14473, Germany and SOBOLEV, Stephan, GFZ Potsdam, Telegrafenberg, Potsdam, 14473, anton@gfz-potsdam.de, anton@gfz-potsdam.de
13
4:45 PM
THE SAN ANDREAS FAULT IN SOUTHERN CALIFORNIA IS ALMOST NOWHERE VERTICAL—IMPLICATIONS FOR TECTONICS
FUIS, Gary S., Earthquake Hazards Team, U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025, SCHEIRER, Daniel S., U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, LANGENHEIM, Victoria E., U.S. Geol Survey, 345 Middlefield Road, Menlo Park, CA 94025 and KOHLER, Monica D., Earth and Space Sciences, Univ of California, Los Angeles, 395 Charles E. Young Drive, Los Angeles, CA 90095-1567, fuis@usgs.gov, fuis@usgs.gov
 
5:00 PM
GEORGE P. WOOLLARD AWARD AND TECHNICAL LECTURE: ALAN LEVANDER, THROUGH THE PAST, LESS DARKLY
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