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Activity

2006

• SOIL FORMATION BENEATH THE EARTH'S OLDEST KNOWN (3.46 GA) UNCONFORMITY?
  T221 Paleosols, Proxies, and Paleoenvironments II
  Wednesday, 25 October 2006

  1:30 PM - 5:30 PM

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2005

• 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
• INVITED: BACTERIOGENIC SULFIDE FORMATION: STABLE ISOTOPE SYSTEMATICS OF IRON-SULFUR-ORGANIC CARBON IN THE ARCHEAN-PALEOPROTEROZOIC BLACK SHALES AND CRETACEOUS BLACK SHALES
  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

• 2.76 GA SUBMARINE HYDROTHERMAL SYSTEM ASSOCIATED WITH LIFE IN THE MT. ROE BASALT, PILBARA, AUSTRALIA
  T226 Evolution of the Early Atmosphere, Hydrosphere, and Biosphere II: Constraints from Ore Deposits
  Wednesday, 30 October 2002

  1:30 PM - 5:30 PM
• THE DEPLETIONS AND ENRICHMENTS OF FE IN THE 2.7 GA "MT ROE PALEOSOLS" WERE CAUSED BY REDUCED HYDROTHERMAL FLUIDS
  T226 Evolution of the Early Atmosphere, Hydrosphere, and Biosphere II: Constraints from Ore Deposits
  Wednesday, 30 October 2002

  1:30 PM - 5:30 PM
• BANDED IRON FORMATIONS AS GUIDES FOR THE HISTORY OF THE LITHOSPHERE, ATMOSPHERE, AND HYDROSPHERE
  125 Evolution of the Early Atmosphere, Hydrosphere, and Biosphere: Constraints from Ore Deposits
  Tuesday, 29 October 2002

  8:00 AM - 12:00 PM
• MOLYBDENUM GEOCHEMICAL CYCLE IN THE ARCHEAN
  T169 Evolution of the Early Atmosphere, Hydrosphere, and Biosphere I: Constraints from Ore Deposits
  Tuesday, 29 October 2002

  1:30 PM - 5:30 PM
• 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

• MODELING THE LONG-TERM EVOLUTION OF ATMOSPHERIC OXYGEN AND CARBON DIOXIDE
  21 Feedbacks and Coupling between Geosphere, Biosphere, Hydrosphere, and Atmosphere
  Tuesday, 26 June 2001

  10:00 AM - 3:00 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
• MOLYBDENUM AND ORGANIC CARBON IN ARCHEAN BLACK SHALES: EVIDENCE FOR AEROBIC OCEANS
  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
• 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
• PYROPHYLLITE - DIASPORE VEINS IN THE 2.7 GA PALEOSOLS AT MOUNT ROE, PILBARA, AUSTRALIA: NEW EVIDENCE FOR THE OXIC ARCHEAN ATMOSPHERE
  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

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Date Unknown

• 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)