File:Oxygen vs time.png
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Captions
Captions
Estimated variation in the partial pressure of oxygen in the atmosphere over the past four billion years.
Summary[edit]
| Description |
English: Oxygen levels are reproduced from Bekker and Holland (2012). Research by Satkoski et al. (2015) indicates cyanobacteria were active by at least 3.2 billion years ago. The Great Oxidation Event is shown in the figure to have occurred from 2.5 to 2.3 billion years. POE refers to the Paleozoic Oxygenation Event. |
| Date | |
| Source | Own work |
| Author | Microbialmatt |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:00, 24 October 2022 | | 1,022 × 569 (45 KB) | Microbialmatt (talk | contribs) | Uploaded own work with UploadWizard |
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