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S. Sarangi ¹, K. Gopalan ¹, A. B. Roy ², B. Sreenivas ¹, S. Das Sharma ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN
2 Jai Narayan Vyas University, Jodhpur - 342 00 1, IN

Abstract

Pb-Pb isochron age of carbonate rocks of the Jhamarkotra Formation of the Aravalli Supergroup from the Udaipur sector in Rajasthan has been measured for the first time as 1921±67 Ma (2σ). We consider this as a reset age, as it is indistinguishable from the earlier reported Rb-Sr isochron age of 1900±8O Ma for the Darwal Granite formed synkinematically with the Aravalli deformation. The depositional age of the Jhamarkotra carbonates could be 200-300 Ma older as suggested by the positive δ¹³C anomalies noted in these carbonate rocks.

Keywords

Pb-Pb Isochron Age, Carbonates, Aravalli Supergroup Rajasthan.

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Y. J. Bhaskar Rao ¹, S. Das Sarma ¹, B. Sreenivas ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN

Abstract

No Abstract.

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