Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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The wholerock Rb-Sr isochron age of 2380 &#177; 44 Ma (Sr<SUB>i</SUB> = 0.70492  &#177; 14) obtained for the Sambalpur granodiorite indicates an Early Proterozoic granitic activity in this region younger than Singhbhum Granite (ca. 3.3 to 3.1 Ga). Comparable Rb-Sr ages have also been reported for different granites from Mandhya Pradesh.
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