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

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Rb-Sr Dating of Sambalpur Granodiorite, Western Orissa


Affiliations
1 Department of Physics, Samastipur College, Samastipur, Bihar, India
2 Department of Earth Sciences, Sambalpur University, Orissa, India
3 Department of Geology, Calcutta University, Calcutta, W.B., India
4 National Geophysical Research Institute, Hyderabad, A.P., India
 

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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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  • Rb-Sr Dating of Sambalpur Granodiorite, Western Orissa

Abstract Views: 197  |  PDF Views: 145

Authors

A. K. Choudhary
Department of Physics, Samastipur College, Samastipur, Bihar, India
A. Naik
Department of Earth Sciences, Sambalpur University, Orissa, India
D. Mukhopadhyay
Department of Geology, Calcutta University, Calcutta, W.B., India
K. Gopalan
National Geophysical Research Institute, Hyderabad, A.P., India

Abstract


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.