Atmospheric oxygenation caused by a change in volcanic degassing pressure

@article{Gaillard2011AtmosphericOC,
  title={Atmospheric oxygenation caused by a change in volcanic degassing pressure},
  author={Fabrice Gaillard and Bruno Scaillet and Nicholas T. Arndt},
  journal={Nature},
  year={2011},
  volume={478},
  pages={229-232}
}
The Precambrian history of our planet is marked by two major events: a pulse of continental crust formation at the end of the Archaean eon and a weak oxygenation of the atmosphere (the Great Oxidation Event) that followed, at 2.45 billion years ago. This oxygenation has been linked to the emergence of oxygenic cyanobacteria and to changes in the compositions of volcanic gases, but not to the composition of erupting lavas—geochemical constraints indicate that the oxidation state of basalts and… 
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