Atmospheric CO 2 levels from 2.7 billion years ago inferred from micrometeorite oxidation

Author:

Lehmer O. R.123ORCID,Catling D. C.12ORCID,Buick R.12ORCID,Brownlee D. E.24ORCID,Newport S.1ORCID

Affiliation:

1. Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA.

2. Astrobiology Program, University of Washington, Seattle, WA 98195, USA.

3. MS 239-4, Space Science Division, NASA Ames Research Center, Moffett Field, CA 94035, USA.

4. Department of Astronomy, University of Washington, Seattle, WA 98195, USA.

Abstract

Iron-rich micrometeorites from a 2.7 billion-year-old limestone could constrain atmospheric CO 2 levels on the early Earth.

Funder

NASA Astrobiology Institute

NASA Exobiology grant

Simons Collaboration

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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