Dating the rise of atmospheric oxygen
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Bekker, A.; Holland, H. D.; Wang, P.-L.; Rumble, D.; Stein, H. J.; Hannah, J. L.
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Article
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2004
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Nature Publishing Group
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English
β 322 KB
Several lines of geological and geochemical evidence indicate that the level of atmospheric oxygen was extremely low before 2.45 billion years (Gyr) ago, and that it had reached considerable levels by 2.22 Gyr ago. Here we present evidence that the rise of atmospheric oxygen had occurred by 2.32 Gyr