2007 GSA Denver Annual Meeting (28–31 October 2007)
Session No. 166 Tuesday, 30 October 2007
1:30 PM-5:30 PM, Colorado Convention Center: 601

T101. Emerging New Methods in Early Earth Studies: Unraveling the Co-Evolution of Earth and Life

Dorothy Oehler, Carrine E. Blank and Jack Farmer, Presiding
 Paper #Start Time
166-11:30 PM SILICON ISOTOPES IN PRECAMBRIAN CHERTS : A RECORD OF THE OCEANIC TEMPERATURE ?: ROBERT, François, Science de la Terre, Museum National Histoire Naturelle, 57 rue Cuvier - LEME (USM 205) - Case 52, Paris, 75005, France, robert@mnhn.fr and CHAUSSIDON, Marc, Centre de Recherches Pétrographiques et Géochimiques, CRPG-CNRS, BP20, Vandoeuvre-lès-Nancy, 54501, France
166-22:00 PM EARLIEST RECORDS OF LIFE: SCHOPF, J. William, Earth & Space Sciences, Molecular Biology Institute, and IGPP Center for the Study of Evolution and the Origin of Life, Univ of California, Los Angeles, 595 Charles E. Young Drive, East, Los Angeles, CA 90095-1567, schopf@ess.ucla.edu
166-32:20 PM IN-SITU CORRELATED ELECTRON AND X-RAY MICROSCOPY OF PUTATIVE ARCHEAN BIOSIGNATURES: A NOVEL APPROACH FOR ASSESSING THE BIOGENICITY OF ANCIENT ORGANIC MATTER: DE GREGORIO, Bradley T. and SHARP, Thomas G., Geological Sciences, Arizona State Univ, P.O Box 871404, Tempe, AZ 85287-1404, degregorio@asu.edu
166-42:40 PM MOLECULAR EVIDENCE OF LATE ARCHEAN ARCHAEA AND THE PRESENCE OF A SUBSURFACE HYDROTHERMAL BIOSPHERE: VENTURA, Gregory Todd1, KENIG, Fabien2, REDDY, Christopher M.3, SCHIEBER, Juergen4, NELSON, Robert K.3, DINEL, Etienne5, and FRYSINGER, Glenn S.6, (1) Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, MS#4, Woods Hole, MA 02543-1543, gventura@whoi.edu, (2) Department of Earth and Environmental Sciences, University of Illinois at Chicago, M/C 186, 845 West Taylor Street, Chicago, IL 60607-7059, (3) Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, MS#4, Woods Hole, MA 02543-1543, (4) Department of Geological Sciences, Indiana University, 1001 East 10th Street, Bloomington, IN 47405-1405, (5) Department of Geology, University of Ottawa, 140 Louis Pasteur, Ontario, K1N 6N5, Canada, (6) Department of Science, U.S. Coast Guard Academy, New London, CT 06320-8101
166-53:00 PM KEROGEN-BOUND AROMATIC HYDROCARBONS AS POTENTIAL MOLECULAR BIOSIGNATURES FOR OVERMATURE ORGANIC MATTER IN 3.43 GA STRELLEY POOL CHERTS FROM PILBARA CRATON, WESTERN AUSTRALIA: LOVE, Gordon D., Dept. of Earth Sciences, UC Riverside, Geology Building, Riverside, CA 92521, glove@ucr.edu, MARSHALL, Craig P., School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia, ALLWOOD, Abigail C., Jet Propulsion Laboratory, M/S 183-301, 4800 Oak Grove Drive, Pasadena, CA 91109, SNAPE, Colin E., School of Chemical, Environmental and Mining Engineering, University of Nottingham, Nottingham, NG7 2RD, United Kingdom, WALTER, Malcolm R., Australian Centre for Astrobiology, Macquarie University Biotechnology Research Institute, Sydney, NSW 2109, Australia, VAN KRANENDONK, Martin J., Geological Survey of Western Australia, 100 Plain St, East Perth, WA 6004, Australia, and SUMMONS, Roger E., Dept. of Earth, Atmospheric and Planetary Sciences, MIT, E34-246, Cambridge, MA 02139
166-63:15 PM NANOSIMS: NEW TECHNOLOGY FOR ASSESSING THE ORIGIN OF ORGANIC MATTER IN EARTH'S OLDEST SEDIMENTS: OEHLER, Dorothy Z.1, ROBERT, François2, MEIBOM, Anders2, MOSTEFAOUI, Smail2, SELO, Madeleine2, WALTER, Malcolm R.3, SUGITANI, Kenichiro4, ALLWOOD, Abigail5, and GIBSON, Everett K.1, (1) Astromaterials Research and Exploration Science, NASA - Johnson Space Center, 2101 NASA Parkway, Houston, TX 77058, dorothy.z.oehler@nasa.gov, (2) Laboratoire d’Etude de la Matière Extraterrestre, Muséum National d’Histoire Naturelle, USM 0205 (LEME), Case Postale 52, 61, Rue Buffon, Paris, 75005, France, (3) Earth and Planetary Sciences, Australian Centre for Astrobiology, Macquarie Univ, New South Wales, 2109, Australia, (4) Department of Environmental Engineering and Architecture, Graduate School of Environmental Studies, Nagoya University, Nagoya, 464-8601, Japan, (5) Planetary Habitability Science, Jet Propulsion Laboratory, M/S 183-301, 4800 Oak Grove Drive, Pasadena, CA 91109
166-73:30 PM LIFE ON EARTH BEFORE 3.83 BILLION YEARS AGO? THE AKILIA "CONTROVERSY" 10 YEARS ON: MOJZSIS, Stephen J., Department of Geological Sciences, Univ of Colorado, UCB 399, 2200 Colorado Avenue, Boulder, CO 80309-0399, mojzsis@colorado.edu
166-83:45 PM THE IRON ISOTOPE VARIATIONS IN THE ~ 2.5 GA MT. MCRAE SHALE: DUAN, Yun1, ANBAR, Ariel D.1, ARNOLD, Gail L.1, GORDON, Gwyneth W.1, SEVERMANN, Silke2, and LYONS, Timothy W.2, (1) School of Earth and Space Exploration, Arizona State University, Box 871404, Tempe, AZ 85287-1404, yun.duan@asu.edu, (2) Dept of Earth Sciences, University of California, Riverside, Riverside, CA 92521-0423
166-94:00 PM CHARACTERIZATION OF PRECAMBRIAN ORGANIC-WALLED MICROFOSSIL ULTRASTRUCTURE USING FOCUSED ION BEAM ELECTRON MICROSCOPY: SCHIFFBAUER, James D. and XIAO, Shuhai, Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, jdschiff@vt.edu
166-104:15 PM OCEANIC VOLCANICS AS HABITATS FOR MICROBIAL LIFE THROUGH TIME: FURNES, Harald1, MCLOUGHLIN, Nicola1, MUEHLENBACHS, Karlis2, BANERJEE, Neil3, STAUDIGEL, Hubert4, DILEK, Yildirim5, DE WIT, Maarten6, VAN KRANENDONK, Martin7, and SCHIFFMAN, Peter8, (1) Centre for Geobiology & Department of Earth Science, University of Bergen, Allegate 41, Bergen, 5007, Norway, harald.furnes@geo.uib.no, (2) Earth and Atmospheric Sciences, University of Alberta, 1-26 ESB, Edmonton, AB T6G 2E3, (3) Department of Earth Sciences, University of Western Ontario, London, ON N6A 5B7, Canada, (4) Scripps Insitution of Oceanography, Univ of California, UCSD-0225, La Jolla, CA 9209309 0225, (5) Geology, Miami University, 116 Shideler Hall, Oxford, OH 45056, (6) Geological Sciences, Univ of Cape Town, Rondebosch, 77058, South Africa, (7) Geological Survey of Western Australia, 100 Plain St. East Perth, Western Australia, Perth, 6004, Australia, (8) Geology, University Of California Davis, Davis, CA 95616
166-114:30 PM QUANTITATIVE METHODS FOR EVALUATING STROMATOLITES AS POTENTIAL MICROBIAL BIOSIGNATURES: RUNNEGAR, Bruce N., Department of Earth and Space Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, runnegar@ucla.edu and JÖGI, Per M., Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567
166-124:45 PM CONSTRAINING THE GLOBAL NATURE AND TIMING OF EDIACARAN C-ISOTOPIC REORDERING: KELLY, Amy E.1, GROSJEAN, Emmanuelle2, FIKE, David A.1, ROTHMAN, Daniel H.1, LOVE, Gordon D.3, ZUMBERGE, John E.4, and SUMMONS, Roger E.1, (1) Earth, Atmospheric, & Planetary Sciences, MIT, 77 Massachusetts Ave, Cambridge, MA 02139, kellya@mit.edu, (2) Petroleum and Marine Division, Geoscience Australia, GPO Box 378, Canberra, 2601, Australia, (3) Dept. of Earth Sciences, UC Riverside, Geology Building, Riverside, CA 92521, (4) Geomark Rsch, 9748 Whithorn Drive, Houston, TX 77095
166-135:00 PM CARBON AND SULFUR ISOTOPES, REDOX CONDITIONS, AND BIOLOGICAL EVOLUTION IN THE EDIACARAN DOUSHANTUO FORMATION: MCFADDEN, Kathleen A.1, HUANG, Jing2, CHU, Xuelei2, JIANG, Ganqing3, KAUFMAN, Alan J.4, ZHOU, Chuanming5, YUAN, Xunlai6, and XIAO, Shuhai1, (1) Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, meikailing@yahoo.com, (2) Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China, (3) Department of Geoscience, Univ of Nevada, Las Vegas, NV 89154, (4) Geology Department, University of Maryland, College Park, MD 20742, (5) Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing, 210008, China, (6) Nanjing Institute of Geology and Paleontology, Nanjing, 210008, China

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