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Earth System Processes 2 (8–11 August 2005)

Session No. 11
Tuesday, 9 August 2005: 9:00 AM-12:00 PM

T11. Oxygen and Evolution on Early Earth I

 

David Catling and Ariel Anbar, Advocates
Paper #
Start Time
1
9:00 AM
INVITED: WHEN DID OXYGEN APPEAR IN THE ATMOSPHERE?
ONO, Shuhei, Geophysical Laboratory, Carnegie Insitution of Washington, 5251 Broad Branch Rd. NW, Washington, DC 20015-1305 and HOLLAND, Heinrich D., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, s.ono@gl.ciw.edu, s.ono@gl.ciw.edu
2
9:40 AM
GEOLOGIC EVIDENCE FOR THE EARLY DEVELOPMENTS OF AN OXYGENATED ATMOSPHERE, SULFATE-RICH OCEANS, AND DIVERSE MARINE- AND TERRESTRIAL BIOSPHERES
OHMOTO, Hiroshi and WATANABE, Yumiko, NASA Astrobiology Institute and Department of Geosciences, The Pennsylvania State University, 435 Deike Bldg, University Park, PA 16803, hqo@psu.edu, hqo@psu.edu
3
10:00 AM
BIOGEOCHEMICAL INVESTIGATIONS OF ~3.8 GA SUPRACRUSTAL ROCKS FROM SOUTHERN WEST GREENLAND
PAPINEAU, Dominic, Department of Geological Sciences, Univ of Colorado, UCB 399, 2200 Colorado Avenue, Boulder, CO 80309-0399 and MOJZSIS, Stephen, Geological Sciences, University of Colorado at Boulder, 2200 Colorado Ave, UCB 399, Boulder, CO 80309-0399, Dominic.Papineau@colorado.edu, Dominic.Papineau@colorado.edu
 
10:20 AM
Break
4
10:40 AM
THE ABSENCE OF MASS INDEPENDENT SULFUR ISOTOPE FRACTIONATION IN ARCHEAN SEDIMENTARY ROCKS: EVIDENCE FOR AN OXIC ATMOSPHERE?
WATANABE, Yumiko, Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State Univ, 434 Deike Bldg, University Park, PA 16802, KLARKE, Alice I., Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State University, 434 Deike Blgd, University Park, PA 16802, POULSON, Simon, Geological Sciences, Univ of Nevada-Reno, 1664 N. Virginia St, Reno, NV 89557-0138 and OHMOTO, Hiroshi, Astrobiology Research Center & Dept. of Geosciences, The Pennsylvania State University, 435 Deike Building, University Park, PA 16802, yumiko@geosc.psu.edu, yumiko@geosc.psu.edu
5
11:00 AM
THE LATE ARCHEAN TO EARLY PALEOPROTEROZOIC EARTH SYSTEM AND THE RISE OF ATMOSPHERIC OXYGEN
BARLEY, Mark E., School of Earth and Geographical Sciences, The Univ of Western Australia, 35 Stirling Highway, Crawley, 6009, Australia, BEKKER, Andrey, Geophysical Lab, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, DC 20015 and KRAPEZ, Bryan, School of Earth and Geographical Sciences, The Univ of Western Austrtalia, 35 Striling Highway, Crawley, 6009, mbarley@segs.uwa.edu.au, mbarley@segs.uwa.edu.au
6
11:20 AM
CONSTRAINTS ON ARCHEAN OXYGEN FROM MANTLE ISOTOPE SYSTEMATICS
ANBAR, Ariel1, TACKLEY, Paul2 and WASYLENKI, Laura1, (1)Department of Geological Sciences, Arizona State Univ, Tempe, AZ 85287, (2)Department of Earth and Space Sciences, Univ. California Los Angeles, Los Angeles, CA 90095, anbar@asu.edu, anbar@asu.edu
7
11:40 AM
A PALEOPROTEROZOIC ORIGIN OF OXYGENIC PHOTOSYNTHESIS AS A TRIGGER FOR THE MAKGANYENE SNOWBALL EARTH EVENT
KIRSCHVINK, Joseph L., Division of Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, MC 170-25, Pasadena, CA 91125 and KOPP, Robert E., Department of Earth and Planetary Sciences, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, robert.kopp@rutgers.edu, robert.kopp@rutgers.edu
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