alexa The rise of oxygen in Earth's early ocean and atmosphere.
Geology & Earth Science

Geology & Earth Science

Journal of Geology & Geophysics

Author(s): Lyons TW, Reinhard CT, Planavsky NJ

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Abstract The rapid increase of carbon dioxide concentration in Earth's modern atmosphere is a matter of major concern. But for the atmosphere of roughly two-and-half billion years ago, interest centres on a different gas: free oxygen (O2) spawned by early biological production. The initial increase of O2 in the atmosphere, its delayed build-up in the ocean, its increase to near-modern levels in the sea and air two billion years later, and its cause-and-effect relationship with life are among the most compelling stories in Earth's history. This article was published in Nature and referenced in Journal of Geology & Geophysics

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