Ancient micrometeorites suggestive of an oxygen-rich Archaean upper atmosphere

Andrew G. Tomkins (), Lara Bowlt, Matthew Genge, Sasha Wilson, Helen E. A. Brand and Jeremy L. Wykes
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Andrew G. Tomkins: School of Earth, Atmosphere and Environment, Monash University
Lara Bowlt: School of Earth, Atmosphere and Environment, Monash University
Matthew Genge: Impact and Astromaterials Research Centre, Imperial College London
Sasha Wilson: School of Earth, Atmosphere and Environment, Monash University
Helen E. A. Brand: Australian Synchrotron, 800 Blackburn Road
Jeremy L. Wykes: School of Earth, Atmosphere and Environment, Monash University

Nature, 2016, vol. 533, issue 7602, 235-238

Abstract: Evidence in support of low atmospheric oxygen concentrations on early Earth relates to the composition of the lower Archaean atmosphere; now the composition of fossil micrometeorites preserved in 2.7-billion-year-old rocks in Australia suggests that they were oxidized in an oxygen-rich Archaean upper atmosphere.

Date: 2016
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DOI: 10.1038/nature17678

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