| | Paper # | Start Time | |
| 226-1 | 1:30 PM | SECULAR DECREASE IN ATMOSPHERE d15N: ATMOSPHERE ORIGIN AND CRUSTAL CYCLING: JIA, Yiefei, Research School of Earth Sciences, Australian Univ of Canberra, Canberra, ACT 0200, Australia, yiefei.jia@anu.edu.au and KERRICH, Robert, University of Saskatchewan, 114 Science Pl, Saskatoon, SK S7N 5E2, Canada, robert.kerrich@usask.ca |
| 226-2 | 1:50 PM | SULFUR CYCLING, S ISOTOPE FRACTIONATION, AND THE RISE OF ATMOSPHERIC O2: KASTING, James F., Geosciences, Penn State Univ, 443 Deike, University Park, PA 16802, kasting@essc.psu.edu. |
| 226-3 | 2:05 PM | CONFIRMATION OF MASS-INDEPENDENT ISOTOPE EFFECTS IN ARCHEAN (2.5–3.8 GA) SEDIMENTARY SULFIDES AS DETERMINED BY ION MICROPROBE ANALYSIS: MOJZSIS, Stephen J., Department of Geological Sciences, University of Colorado, UCB 399, 2200 Colorado Avenue, Boulder, CO 80309-0399, mojzsis@colorado.edu, COATH, Christopher D., Department of Earth Sciences, Univ of Bristol, Wills Memorial Building, Queen's Road, Clifton, Bristol, BS8 1RJ, United Kingdom, GREENWOOD, James P., Department of Geology and Geophysics, Yale Univ, Kline Geological Laboratory, New Haven, CT 05611, MCKEEGAN, Kevin D., Department of Earth and Space Sciences, Univ of California, Box 1567, Los Angeles, CA 90095-1567, and HARRISON, T. Mark, Research School of Earth Sciences, Australian National Univ, Canberra A.C.T, 0200, Australia |
| 226-4 | 2:20 PM | MASS-INDEPENDENT FRACTIONATIONS OF FOUR SULFUR ISOTOPES AS TRACERS OF ARCHEAN BASE METAL AND GOLD ORE-FORMING FLUIDS: RUNNEGAR, Bruce1, COATH, Christopher D.2, LYONS, James R.1, MANNING, Craig E.1, and MCKEEGAN, Kevin D.1, (1) Dept. of Earth and Space Sciences and IGPP Center for Astrobiology, NASA Astrobiology Institute, Univ. of California, Los Angeles, CA 90095-1567, runnegar@ucla.edu, (2) Dept. of Earth Sciences, Univ. of Bristol, Bristol, BS8 1RJ, United Kingdom |
| 226-5 | 2:35 PM | D33S EVIDENCE FROM SUPERIOR PROVINCE ORE DEPOSITS FOR A SULFATE-STRATIFIED OCEAN AT 2.7 GA: WING, Boswell A., Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, wing@essic.umd.edu, FARQUHAR, James, Department of Geology and Earth System Science Interdisciplinary Center, Univ of Maryland, College Park, MD 20742, RUMBLE, Douglas III, Geophysical Lab, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, DC 20015, and VALLEY, John W., Department of Geology and Geophysics, Univ of Wisconsin, Madison, WI 53706 |
| 226-6 | 2:50 PM | DIRECT MEASUREMENT OF HYDROTHERMAL FLUIDS FROM ANCIENT SEAFLOOR VENTS: IMPLICATIONS FOR THE COMPOSITION OF ARCHEAN SEAWATER: DE RONDE, Cornel E.J.1, BRAY, Colin J.2, SPOONER, Edward T.C.2, CHANNER, Dominic M. deR3, DANN, Jesse C.4, and FAURE, Kevin1, (1) Geothermal and Minerals, Institute of Geol & Nuclear Sciences, 30 Gracefield Road, Lower Hutt, New Zealand, c.deronde@gns.cri.nz, (2) Department of Geology, Univ of Toronto, 33 Russell Street, Toronto, Canada, (3) Toco Mining, 2170 SE 17th Street, Suite 202, Fort Lauderdale, FL, (4) Geology Department, Wellesley College, Boston, MA |
| 226-7 | 3:05 PM | THE DEPLETIONS AND ENRICHMENTS OF FE IN THE 2.7 GA "MT ROE PALEOSOLS" WERE CAUSED BY REDUCED HYDROTHERMAL FLUIDS: NEDACHI, Yoko, Department of Earth and Environmental@Science, 1-21-35 Korimoto, Kagoshima, 890-0065, Japan, nedachi@jundai.k-junshin.ac.jp, HIDAKA, Hiroshi, Department of Earth and Planetary Systems Science, Kagami-yama 1-3-1, Higashi-Hiroshima, Hiroshima, 739, Japan, NEDACHI, Munetomo, Faculty of Science, Kagoshima Univ, Kagoshima, 890-0065, Japan, and OHMOTO, Hiroshi, Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 435 Deike Bldg, University Park, PA 16802 |
| 226-8 | 3:20 PM | 2.76 GA SUBMARINE HYDROTHERMAL SYSTEM ASSOCIATED WITH LIFE IN THE MT. ROE BASALT, PILBARA, AUSTRALIA: NEDACHI, Munetomo1, NOZAKI, Junpei1, and OHMOTO, Hiroshi2, (1) Faculty of Science, Kagoshima Univ, Kagoshima, 890-0065, Japan, nedachi@sci.kagoshima-u.ac.jp, (2) Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 435 Deike Bldg, University Park, PA 16802 |
| 226-9 | 3:35 PM | PRECAMBRIAN BASIN-RELATED MVT DEPOSITS: POSSIBLE RELATION TO EARLY HYDROSPHERE AND ATMOSPHERE COMPOSITIONS: KESLER, Stephen E., Univ Michigan - Ann Arbor, 425 E University Ave, Ann Arbor, MI 48109-1063, skesler@umich.edu. |
| 226-10 | 3:50 PM | A SURVEY OF SULFUR ISOTOPE TRENDS IN PROTEROZOIC SEDEX DEPOSITS AND INFERRED LINKS TO GLOBAL OCEAN CHEMISTRY: LYONS, Timothy W. and GELLATLY, Anne M., Department of Geological Sciences, Univ. of Missouri, Columbia, MO 65211, lyonst@missouri.edu |
| 226-11 | 4:10 PM | SUPERHEAVY S ISOTOPES FROM GLACIAL-ASSOCIATED MN ORES OF THE NEOPROTEROZOIC OF SOUTH CHINA: OCEANIC ANOXIA OR SULFATE LIMITATION?: MAYNARD, J. Barry1, LIU, Tie-bing2, and ALTEN, John1, (1) Department of Geology, Univ of Cincinnati, P.O. Box 210013, Cincinnati, OH 45221, maynarjb@uc.edu, (2) Institute of Geology, Chinese Academy of Sciences, P. O. Box 634, Beijing, 100029, China |
| 226-12 | 4:25 PM | THE RELATIONSHIP OF NEOPROTEROZOIC CLIMATE CHANGE AND ORE GENESIS: KAUFMAN, Alan Jay, Department of Geology, Univ of Maryland, College Park, College Park, MD 20742, kaufman@geol.umd.edu. |
| 226-13 | 4:40 PM | PALEOPLACER GOLD POTENTIAL IN THE EARLY PROTEROZOIC RORAIMA GROUP: MINTER, W.E.L.1, FRIMMEL, H.E.1, KIRK, J.2, and VENNEMANN, Torsten3, (1) Geological Sciences, Univ of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa, welm@geology.uct.ac.za, (2) Dept. of Geosciences, Univ of Arizona, Tucson, AZ 85721, (3) Institute for Mineralogy, Petrography and Geochemistry, Univ of Tuebingen, Wilhelmstr.56, Tuebingen, D-72074, Germany |
| | 4:55 PM | Discussion |
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