Anaerobic methanotrophy and the rise of atmospheric oxygen.

  title={Anaerobic methanotrophy and the rise of atmospheric oxygen.},
  author={David C. Catling and Mark W Claire and Kevin. J. Zahnle},
  journal={Philosophical transactions. Series A, Mathematical, physical, and engineering sciences},
  volume={365 1856},
In modern marine sediments, the anoxic decomposition of organic matter generates a significant flux of methane that is oxidized microbially with sulphate under the seafloor and never reaches the atmosphere. In contrast, prior to ca 2.4Gyr ago, the ocean had little sulphate to support anaerobic oxidation of methane (AOM) and the ocean should have been an important methane source. As atmospheric O2 and seawater sulphate levels rose on the early Earth, AOM would have increasingly throttled the… CONTINUE READING
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