2010 GSA Denver Annual Meeting (31 October 3 November 2010)
Session No. 228 Wednesday, 3 November 2010
8:00 AM-12:00 PM, Colorado Convention Center: Room 205

Recent Advances in Geochemistry Geology

Christa J. Placzek, Presiding
 Paper #Start Time
228-18:00 AM STABLE C AND O ISOTOPES IN LATE CENOZOIC MAMMALIAN TOOTH ENAMEL FROM THE QAIDAM BASIN, CHINA AND THEIR PALEOENVIRONMENTAL AND PALEOECOLOGICAL IMPLICATIONS: ZHANG, Chunfu1, WANG, Yang2, LI, Qiang3, WANG, Xiaoming4, DENG, Tao3, TSENG, Zhijie Jack5, and TAKEUCHI, Gary T.4, (1) Earth, Ocean and Atmospheric Science, Florida State University, National High Magnetic Field Laboratory, 1800 E Paul Dirac Drive, Tallahassee, FL 32310, cz05d@fsu.edu, (2) Earth, Ocean and Atmospheric Science, Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL 32310, (3) Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China, (4) Department of Vertebrate Paleontology, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, (5) Integrative Evolutionary Biology, University of Southern California, 3616 Trousdale Parkway, Los Angeles, CA 90089-0371
228-28:15 AM (U-TH)/HE THERMOCHRONOMETRY OF CONODONTS FROM THE NORTHERN CALCAREOUS ALPS, AUSTRIA: SEMAN, Spencer1, STOCKLI, Daniel F.2, GRASEMAN, Bernhard3, and LEIN, Richard3, (1) Dept of Geology, University of Kansas, 120 Lindley Hall, 1475 Jayhawk Blvd, Lawrence, KS 66045, spencer.seman@gmail.com, (2) Department of Geology, University of Kansas, Lawrence, 66045, (3) Department for Geodynamics and Sedimentology, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
228-38:30 AM REGIONAL VARIABILITY OF STABLE ISOTOPE AND RARE EARTH ELEMENT SIGNATURES IN FOSSIL VERTEBRATES FROM THE EOCENE-OLIGOCENE WHITE RIVER GROUP: GRANDSTAFF, David E. and TERRY, Dennis O. Jr, Earth and Environmental Science, Temple University, 326 Beury Hall, 1901 N. 13th St, Philadelphia, PA 19122, grand@temple.edu
228-48:45 AM ENVIRONMENTAL AND BIOLOGICAL VARIATION OF SR/CA AND BA/CA IN TERRESTRIAL AND MARINE SYSTEMS: PEEK, Stephanie, Geology and Geophysics, University of Wyoming, Dept. #3006, 1000 E. University Ave, Laramie, WY 82071-3006, speek@uwyo.edu and CLEMENTZ, Mark T., Geology and Geophysics, University of Wyoming, 1000 University Ave. University of Wyoming, Dept. 3006, Laramie, WY 82071
228-59:00 AM CHANGES IN SOIL CHEMICAL PROPERTIES DURING SHORT-TERM REDUCING CONDITIONS FOLLOWED BY NITROGEN FERTILIZER APPLICATION: DHAKAL, Prakash, MATOCHA, Chris J., PYZOLA, Stephanie, VANDIVIERE, Martin, and GROVE, John H., Department of Plant and Soil Science, University of Kentucky, N-122 Ag Science Center-N, Lexington, KY 40546, pdh222@uky.edu
228-69:15 AM MASS INDEPENDENT 238U/235U FRACTIONATION AND WEATHERING PROCESSES: PLACZEK, Christa J.1, LINHOFF, Benjamin2, RECIPUTI, Lee R.1, and HEIKOOP, Jeff3, (1) Clean Chemistry Team 
Nuclear and Radiochemistry, C-NR, 
Los Alamos National Laboratory, MS-J514, Los Alamos, NM 87545, cplaczek@lanl.gov, (2) Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Mail Stop 25, Woods Hole, MA 02543, (3) Earth and Environmental Sciences Division, Los Alamos National Lab, Los Alamos, NM 87545
228-79:30 AM EXPERIMENTAL DETERMINATION OF IRON ISOTOPE FRACTIONATIONS AMONG FE(II)aq-FeSaq-MACKINAWITE AT LOW TEMPERATURES: WU, Lingling1, DRUSCHEL, Gregory2, BEARD, Brian L.1, and JOHNSON, Clark M.1, (1) Department of Geoscience, University of Wisconsin-Madison, NASA Astrobiology Institute, 1215 W. Dayton St, Madison, WI 53706, lwu@geology.wisc.edu, (2) Department of Geology, University of Vermont, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405
 9:45 AM Break
228-810:00 AM GEOCHEMICAL DATABASE FOR LAVAS FROM THE CENTRAL AMERICAN AND IZU-BONIN-MARIANA ARC SYSTEMS: JORDAN, Erika K., Department of Geosciences, The University of Texas at Dallas, FO 21, 800 West Campbell Rd, Richardson, TX 75080, ekjordan18@yahoo.com, RAYE, Urmidola, Department of Geosciences, Universiy of Texas at Dallas, FO 21, 800 West Campbell Road, Richardson, TX 75080, CARR, Michael, Department of Earth & Planetary Sciences, Rutgers University, 610 Taylor Rd, Piscataway, NJ 08854, FEIGENSON, Mark, Earth and Planetary Sciences, Rutgers University, 610 Taylor Rd, Piscataway, NJ 08854, GILL, James B., Department of Earth Sciences, University of California, Santa Cruz, Earth and Marines Sciences Building, EMS Bldg A232, Santa Cruz, CA 95064, KIMURA, Jun Ichi, Ifree-Jamstec, IFREE-JAMSTEC, 2-15 Natsushima-cho, Yokosuka, 237-0061, Japan, LEHNERT, Kerstin A., Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Palisades, NY 10964, STERN, Robert J., Geosciences Department, University of Texas at Dallas, 800 W. Campbell Road, Richardson TX 75080-3021, Texas, TX TX 75080-302, and TAMURA, Yoshihiko, Ifree, JAMSTEC, 2-15 Natsushima-cho, Yokosuka, 237-0061, Japan
228-910:15 AM ZIRCON U/PB GEOCHRONOLOGY OF HOST ROCK AND MINERALIZATION AT THE COLES HILL URANIUM DEPOSIT, VIRGINIA: TAPPA, Michael, Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, mtappa@vt.edu, BODNAR, Robert J., Department of Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, AYUSO, Robert A., 954 National Center, U.S. Geological Survey, Reston, VA 20192, AYLOR, Joseph G. Jr, Virginia Uranium, Inc, 231 Woodlawn Heights, Chatham, VA 24531, WOODEN, Joseph L., USGS-Stanford Ion Microprobe Laboratory, Stanford University, Stanford, CA 94305, and VAZQUEZ, Jorge A., U.S. Geological Survey, 345 Middlefield Road MS 910, Menlo Park, CA 94025
228-1010:30 AM HYDROGEOCHEMICAL CONTROLS ON FELSIC VOLCANIC ROCK WEATHERING ACROSS A CLIMATIC GRADIENT: CENTRAL CASCADES AND HIGH DESERT, OREGON: SZRAMEK, Kathryn, Environmental Science and Policy, Drake University, 2507 University Avenue, Des Moines, IA 50311, kathryn.szramek@drake.edu, SCHWARZ, Julia, Carleton College, Northfield, MN 55057, and FREY, Holli M., Department of Geology, Union College, 807 Union St, Schenectady, NY 12308-1307
228-1110:45 AM IN SITU ATOMIC FORCE MICROSCOPY (AFM) INVESTIGATIONS OF CLAY MINERAL SWELLING: MCGUIRE, Molly M. and HEIST, Christopher A., Department of Chemistry, Bucknell University, Lewisburg, PA 17837, mmcguire@bucknell.edu
228-1211:00 AM NEW INSIGHT INTO CORRELATED QUANTIFICATION AND SPECTRAL EVALUATION OF CDOM USING UV-VIS ABSORBANCE AND FLUORESCENCE: GILMORE, Adam, HORIBA Scientific, Molecular and Microanalysis, 3880 Park Ave, Edison, NJ 08822, adam.gilmore@horiba.com

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