Statherian
| Statherian | |
|---|---|
Period | |
| Stratigraphic unit | System |
| Time span formality | Formal |
| Lower boundary definition | Defined chronometrically |
| Lower GSSA ratified | 1991[1] |
| Upper boundary definition | Defined chronometrically |
| Upper GSSA ratified | 1991[1] |
The Statherian Period ( Mya to 1600 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.[2][3]
The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of current values.[4]
eukaryotic fossil organism.[6]
By the beginning of the Statherian, the supercontinent Columbia had assembled.[7]
Approximately 1.7 billion years ago, natural nuclear fission reactors were generating power in what is now Oklo, Gabon.[8]
See also
- Boring Billion – Earth history, 1.8 to 0.8 billion years ago
References
- ^ .
- ^ "Statherian Period". GeoWhen Database. Archived from the original on May 12, 2006. Retrieved January 5, 2006.
- .
- PMID 16754606.
- ^ Kumar, S. (2009). "Controversy concerning 'Cambrian' fossils from the Vindhyan sediments: a re-assessment" (PDF). Journal of the Palaeontological Society of India. 54 (1): 115–117.
- PMID 28291791.
- .
- S2CID 118394767.
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