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L. Paul Knauth ()
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L. Paul Knauth: School of Earth and Space Exploration, Arizona State University

Nature, 2006, vol. 442, issue 7105, 873-874

Abstract: Most geologists agree that Earth's atmosphere was oxygen-free until 2.4 billion years ago. But the latest sulphur-isotope measurements from sedimentary rocks suggest otherwise.

Date: 2006
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DOI: 10.1038/442873a

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