Precambrian–Cambrian boundary in the Tal Formation of Garhwal Lesser Himalaya: Rb—Sr age evidence from black shales underlying phosphorites
The recently reported faunal evidence for placing the Precambrian–Cambrian boundary within the main phosphorite unit of the Chert–Phosphorite Member of the Tal Formation, Garhwal Lesser Himalaya, is supported by the present report of 626 ± 13 myr for the whole-rock Rb–Sr isochron age of the black sh...
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| Veröffentlicht in: | Current science (Bangalore) 1992-04, Vol.62 (7), p.528-530 |
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| container_title | Current science (Bangalore) |
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| creator | Sharma, Kewal K. Rao, D. Rameshwar Azmi, R. J. Gopalan, K. Pantulu, G. V. C. |
| description | The recently reported faunal evidence for placing the Precambrian–Cambrian boundary within the main phosphorite unit of the Chert–Phosphorite Member of the Tal Formation, Garhwal Lesser Himalaya, is supported by the present report of 626 ± 13 myr for the whole-rock Rb–Sr isochron age of the black shales directly underlying the phosphorite band. |
| format | Article |
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| ispartof | Current science (Bangalore), 1992-04, Vol.62 (7), p.528-530 |
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| language | eng |
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| source | Jstor Complete Legacy; EZB Electronic Journals Library |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology Fauna Geochronology Isotope geochemistry. Geochronology RESEARCH COMMUNICATIONS Shales Stratigraphy |
| title | Precambrian–Cambrian boundary in the Tal Formation of Garhwal Lesser Himalaya: Rb—Sr age evidence from black shales underlying phosphorites |
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