Cordilleran Section (104th Annual) and Rocky Mountain Section (60th Annual) Joint Meeting (19–21 March 2008)
Session No. 1 Wednesday, 19 March 2008
8:00 AM-12:00 PM, University of Nevada-Las Vegas: Student Union 208C

Igneous/Metamorphic Petrology, and Volcanology

Sarah L. Hanson and Harold Stowell, Presiding
 Paper #Start Time
1-18:00 AM EVOLUTION OF MIOCENE MAGMATISM ALONG DEATH VALLEY, CALIFORNIA: ND-SR-PB ISOTOPIC CONSTRAINTS: RÄMÖ, O. Tapani, Department of Geology, Univ of Helsinki, P.O. Box 64, Kumpula, Physicum, Helsinki, FIN-00014, Finland, and CALZIA, J.P., U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025
1-28:20 AM DIFFERENTIATING LAVA TUBE SKYLIGHTS FROM PIT CRATERS; A STUDY OF THE CAVE-LIKE STRUCTURES ON ARSIA MONS, MARS: HALLIDAY, William R., Commission on Volcanic Caves, International Union of Speleology, 6530 Cornwall Court, Nashville, TN 37205, and WYNNE, J. Judson, Department of Biological Sciences and Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, AZ 86011
1-49:00 AM ERUPTIVE AND DEPOSITIONAL PROCESSES OF NARBONA PASS MAAR VOLCANO, NAVAJO VOLCANIC FIELD, NAVAJO NATION, NEW MEXICO: BRAND, Brittany, CLARKE, Amanda, and SEMKEN, Steven, School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, AZ 85287-1404,
1-59:20 AM RARE-EARTH ELEMENT DISTRIBUTION IN THE MOHAVE COUNTY PEGMATITES, NORTHWESTERN ARIZONA: HANSON, Sarah L.1, SIMMONS, William B.2, and FALSTER, Alexander U.2, (1) Earth Science, Adrian College, 110 S. Madison St, Adrian, MI 49221,, (2) Geology and Geophysics, Univ of New Orleans, New Orleans, LA 70148
1-69:40 AM IN-SITU LA-ICP-MS ANALYSIS OF PYROXENE IN THE PERIDOTITE OF THE COAST RANGE OPHIOLITE, CALIFORNIA: JEAN, Marlon M., Geology, Utah State University, 4505 Old Main Hill, Logan, UT 84322,, SHERVAIS, John, Geology Department, Utah State University, 4505 Old Main Hill, Logan, UT 84322-4505, MUKASA, Samuel, Geological Sciences, University of Michigan, 2534 C. C. Little Building, 1100 North University Ave, Ann Arbor, MI 48109, and CHOI, Sung Hi, Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109-1005
 10:00 AM Break
1-710:20 AM BASALT SOURCE EVOLUTION AT THE INTERSECTION OF THE SNAKE RIVER PLAIN-YELLOWSTONE AND HIGH LAVA PLAINS-NEWBERRY MAGMATIC PROVINCES: HART, William K., Geology, Miami University, 114 Shideler Hall, Oxford, OH 45056,, SHOEMAKER, Kurt A., Natural Sciences, Shawnee State University, 940 Second Street, Portsmouth, OH 45662, BRUESEKE, Matthew E., Geology, Kansas State University, 108 Thompson Hall, Manhattan, KS 66506, and BONDRE, Ninad R., 41 Blake Apartments, London, N87QF, England
1-810:40 AM A NEW 3-DIMENSIONAL VIEW OF THE MID-MIOCENE VOLCANIC AND PLUTONIC ROCKS OF THE RIVER MOUNTAINS, SOUTHERN NEVADA: SMITH, Eugene1, JOHNSEN, Racheal1, HONN, Denise1, BRAINARD, Ray2, and COON, Richard3, (1) Department of Geoscience, University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010,, (2) Black and Veatch Corporation, 8400 Ward Pky, Kansas City, MO 64114, (3) CH2MHill, 2285 Corporate Circle, Suite 200, Henderson, NV 89074
1-911:00 AM QUATERNARY BASALTIC VOLCANISM ALONG THE NORTHWESTERN MARGIN OF THE OWYHEE PLATEAU, SE OREGON: SHORT, Emily J., JASTRAB, Jamie M., and HART, William K., Geology, Miami University, 114 Shideler Hall, Oxford, OH 45056,
1-1011:20 AM TIMING OF HIGH PRESSURE METAMORPHISM AND PARTIAL MELTING FIORDLAND, NEW ZEALAND: STOWELL, Harold1, GATEWOOD, Mathew1, PARKER, Karen1, TULLOCH, Andy2, and KOENIG, Alan3, (1) Department of Geological Sciences, Univ of Alabama, Box 870338, Tuscaloosa, AL 35487-0338,, (2) Dunedin, New Zealand, (3) Mineral Resources Team, United States Geological Survey, MS 973 Denver Federal Center, Denver, CO 80225
1-1111:40 AM LATE CRETACEOUS AMPHIBOLITE FACIES METAMORPHISM IN THE SAPPHIRE MOUNTAINS, SOUTHWESTERN MONTANA CONSTRAINED BY U-PB DATING OF MONAZITE: DYE, John H.1, BALDWIN, Julia A.2, CROWLEY, James1, and SCHMITZ, Mark1, (1) Department of Geosciences, Boise State University, 1910 University Drive, Boise, ID 83725,, (2) Department of Geosciences, University of Montana, Missoula, MT 59812

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