Session No. 17 Wednesday, May 2, 2001

8:00 AM-12:00 PM, Sheraton Old Town Hotel: Alvarado AB
S5. Continental Lithosphere of the Rocky Mountain Region-from Proterozoic Acccretion to Present Structure
Karl E. Karlstrom and M. L. Williams, Presiding
Start Time
8:00 AM GEOLOGIC INTERPRETATION OF CRUSTAL REFLECTION PROFILE ACROSS THE CHEYENNE BELT, PROTEROZOIC SUTURE, SE WYOMING AND NORTHERN COLORADO: MOROZOVA, Elena A.1, WAN, Xin1, CHAMBERLAIN, Kevin2, SMITHSON, Scott B.2, JOHNSON, Roy3, KARLSTROM, Karl E.4, and TYSON, Amanda R.4, (1) Geology & Geophysics department, University of Wyoming, Laramie, WY 82071-3006, lena@uwyo.edu, (2) Geology & Geophysics department, Univ of Wyoming, Laramie, WY 82071-3006, (3) Department of Geosciences, Univ of Arizona, 1040 E 4th street, Tucson, AZ 85721, (4) Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131
8:15 AM GEOPHYSICAL EVIDENCE FOR MAGMATIC MODIFICATION OF THE CRUST IN THE ROCKY MOUNTAIN REGION: KELLER, G. Randy, SNELSON, Catherine, MILLER, Kate C., and QUEZADA, Oscar, Department of Geological Sciences, Univ of Texas at El Paso, El Paso, TX 79968, keller@geo.utep.edu
8:30 AM LITHOSPHERIC SCALE STRUCTURAL VARIATIONS ACROSS THE CHEYENNE BELT: DUEKER, Kenneth, Department of Geology and Geophysics, Univ of Wyoming, Laramie, WY 82071, dueker@uwyo.edu.
8:45 AM VELOCITY STRUCTURE ALONG THE CD-ROM '99 SEISMIC REFRACTION/WIDE-ANGLE REFLECTION EXPERIMENT: SNELSON, Catherine M.1, RUMPEL, Hanna-Maria2, KELLER, G. Randy1, PRODEHL, Claus2, MILLER, Kate C.1, and HARDER, Steven H.1, (1) Geological Sciences, Univ of Texas at El Paso, 500 W University Ave, El Paso, TX 79968-0555, snelson@geo.utep.edu, (2) Geophysikalisches Institut, Univ of Karlsruhe, Hertzstr.16, Karlsruhe, 76187, Germany
9:00 AM Poster Presentations
9:15 AM Poster Summaries: Magnani, Rumpel, Miller
9:30 AM Poster Summaries: Zurek, Crosswhite, Yuan
9:45 AM Break
10:00 AM CONSTRAINTS ON THE NATURE OF THE LOWER CRUST ACROSS THE CHEYENNE BELT: PETROLOGIC EVIDENCE FROM LOWER CRUSTAL XENOLITHS: STEVENS, Liane M.1, WILLIAMS, Michael L.1, BOWRING, Samuel A.2, MATZEL, Jennifer P.2, and FARMER, G. Lang3, (1) Department of Geosciences, Univ of Massachusetts Amherst, 233 Morrill Science Center, Amherst, MA 01003, lianes@geo.umass.edu, (2) Department of Earth, Atmospheric, and Planetary Sciences, MIT, (3) Department of Geological Sciences, Univ Colorado - Boulder
10:15 AM MINERAL HOMOGENEITY IN PERIDOTITE XENOLITHS FROM MINETTE AT BUELL PARK, AZ: KINETICS, THERMOMETRY, AND THE COLORADO PLATEAU MANTLE: SMITH, Douglas, Univ Texas - Austin, Dept Geological Sciences, C1100, Austin, TX 78712-1101, doug@maestro.geo.utexas.edu.
10:30 AM A METASOMATIC ORIGIN FOR LARAMIDE TECTONISM AND MAGMATISM: HUMPHREYS, Eugene D., Geological Sciences, Univ of Oregon, Eugene, OR 97403, gene@newberry.uoregon.edu, ERSLEV, Eric, Earth Resources, Colorado State Univ, Fort Collins, CO 80523, and FARMER, Lang, Geological Sciences, Univ of Colorado, Boulder, CO 80309,
10:45 AM MECHANISMS FOR PRECAMBRIAN BASEMENT CONTROL OF LARAMIDE AND ANCESTRAL ROCKY MOUNTAIN STRUCTURES: ERSLEV, Eric A.1, BOLAY, Nicole V.1, EHRLICH, Timothy K.1, and KARLSTROM, Karl E.2, (1) Department of Earth Resources, Colorado State Univ, Fort Collins, CO 80523, erslev@cnr.colostate.edu, (2) Earth & Planetary Sciences, Univ of New Mexico, Northrop Hall, Albuquerque, NM 87131
11:00 AM INFLUENCE OF THE COLORADO MINERAL BELT ON THE NORTHWEST MARGIN OF THE DENVER BASIN: KELLEY, Shari A., Dept. of Earth and Environmental Science, New Mexico Tech, Socorro, NM 87801, sakelley@ix.netcom.com, CHAPIN, Charles E., New Mexico Bureau of Mines and Mineral Resources, Socorro, NM 87801, and RAYNOLDS, Robert G., Denver Museum of Nature and Sci, 2001 Colorado Blvd, Denver, CO 80205,
11:15 AM THE FLUVIAL RECORD OF ROCKY MOUNTAIN EPEIROGENY - A REVIEW: PAZZAGLIA, Frank J.1, WISNIEWSKI, Paul A.2, and ZAPROWSKI, Brent1, (1) Dept. of Earth and Environmental Sciences, Lehigh Univ, 31 Williams Dr, Bethlehem, PA 18015-3188, fjp3@lehigh.edu, (2) Division of Oil, Gas, and Mining, Utah Dept of Nat Rscs, 1594 West North Temple, Suite 1210, P.O. Box 145801, Salt Lake City, 84114
11:30 AM Discussion
11:45 AM Concluding Remarks

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