A new model for Proterozoic ocean chemistry

  title={A new model for Proterozoic ocean chemistry},
  author={Donald E. Canfield},
There was a significant oxidation of the Earth's surface around 2 billion years ago (2 Gyr). Direct evidence for this oxidation comes, mostly, from geological records of the redox-sensitive elements Fe and U reflecting the conditions prevailing during weathering. The oxidation event was probably driven by an increased input of oxygen to the atmosphere arising from an increased sedimentary burial of organic matter between 2.3 and 2.0 Gyr. This episode was postdated by the final large… Expand

Paper Mentions

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