Did natural fission of 235U in the earth lead to formation of the supercontinent Columbia?
Steady decline in the percentage of 235U in terrestrial uranium made natural fission impossible after about 1.8 Ga. Fission before 1.8 Ga disturbed the lead isotope system at various places worldwide, such as Oklo, Gabon, and may have caused the first lead isotope paradox. Fission in areas of high u...
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| Format: | Article |
| Language: | English |
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Elsevier
2012-07-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987112000370 |