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Activity

2011

• EVIDENCE FOR THE FULLY-OXYGENATED OCEANS AND ATMOSPHERE DURING THE ARCHEAN EON
  228 Earth’s Early Atmosphere and Surface Environment
  Wednesday, 12 October 2011

  8:00 AM - 12:00 PM

  Room 101A-C

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2006

• MIF-S RECORD IN SEDIMENTARY ROCKS: AN INDICATOR OF ATMOSPHERIC OR BIOLOGICAL EVOLUTION?
  158 Links Between Geological Processes, Microbial Activities, and Evolution of Life
  Tuesday, 24 October 2006

  1:30 PM - 5:30 PM
• HEMATITE FORMATION BY OXYGENATED GROUNDWATER AT 2.76 GA AND BY OXYGENATED SEAWATER AT 3.46 GA
  T46 Changes in Ocean and Atmospheric Redox State and the Evolution of Life II
  Sunday, 22 October 2006

  1:30 PM - 5:30 PM

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2005

• THE AECHEAN SULFUR CYCLE
  T147 The Changing Planet I: A Special Tribute Session Celebrating the Contributions of Fred T. Mackenzie
  Tuesday, 18 October 2005

  8:00 AM - 12:00 PM
• THE ABSENCE OF MASS INDEPENDENT SULFUR ISOTOPE FRACTIONATION IN ARCHEAN SEDIMENTARY ROCKS: EVIDENCE FOR AN OXIC ATMOSPHERE?
  11 Oxygen and Evolution on Early Earth I
  Tuesday, 9 August 2005

  9:00 AM - 12:00 PM
• GEOLOGIC EVIDENCE FOR THE EARLY DEVELOPMENTS OF AN OXYGENATED ATMOSPHERE, SULFATE-RICH OCEANS, AND DIVERSE MARINE- AND TERRESTRIAL BIOSPHERES
  11 Oxygen and Evolution on Early Earth I
  Tuesday, 9 August 2005

  9:00 AM - 12:00 PM
• BIOGENIC ORIGIN FOR ORGANIC MATTER IN CHERT/JASPER AND SHALES OF THE 3.46 GA TOWERS FORMATION, PILBARA, WESTERN AUSTRALIA
  4 The Search for Archean Life on Earth and Beyond
  Monday, 8 August 2005

  9:00 AM - 12:00 PM

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2002

• THE ECOSYSTEMS IN SUBMARINE HYDROTHERMAL ENVIRONMENTS OF THE CANADIAN SHIELD 2.7 BILLION YEARS AGO
  T169 Evolution of the Early Atmosphere, Hydrosphere, and Biosphere I: Constraints from Ore Deposits
  Tuesday, 29 October 2002

  1:30 PM - 5:30 PM

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2001

• DEVELOPMENT OF MICROBIAL MATS DURING SOIL FORMATION 2.6-2.3 GA AGO IN EASTERN TRANSVAAL, SOUTH AFRICA
  30 Archaean Earth and Contemporary Life: The Transition from an Anaerobic to an Aerobic Marine Ecosystem (Sponsored by NASA Astrobiology Institute) (Posters)
  Tuesday, 26 June 2001

  4:30 PM - 6:00 PM
• GEOCHEMICAL EVIDENCE FOR OXYGENATED ARCHEAN OCEANS
  23 Archean Earth and Contemporary Life: The Transition from an Anaerobic to an Aerobic Marine Ecosystem (Sponsored by NASA Astrobiology Institute)
  Tuesday, 26 June 2001

  10:00 AM - 4:30 PM

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Date Unknown

• Discovery of the Oldest (~3.4 Ga) Lateritic Paleosols in the Pilbara Craton, Western Australia
  145 Precambrian Geology (Posters)
• GEOCHEMISTRY OF A 2.3 GA SUB-JATURIAN PALEOLATERITE IN THE HALLAVAARA AREA, EASTERN FINLAND
  122 Precambrian Geology (Posters)
• FORMATION OF IRON(III) – SILICIC ACID COMPLEXES AS A POSSIBLE MECHANISM FOR THE TRANSPORT OF IRON IN OXYGENATED NATURAL WATER
  84 Geochemistry Aqueous (Posters)