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Some geochronological observations on the Precambrians of Chotanagpur, Bihar, India

Published online by Cambridge University Press:  01 May 2009

N. C. Ghose
Affiliation:
Institute of Mineralogy and Petrology, 34 Göttingen, W. Germany
B. M. Shmakin
Affiliation:
Institute of Geochemistry, Irkutsk-33, U.S.S.R.
V. N. Smirnov
Affiliation:
Institute of Geochemistry, Irkutsk-33, U.S.S.R.

Summary

K–Ar measurements of the Chotanagpur granite and associated intrusive rocks are found to be younger than the geological events in the Singhbhum region of Bihar. The history of metamorphism, granitic activities and igneous intrusions in the Chotanagpur area continued for a period from over 1000 Ma to 185 Ma. The relevant geological sequences and correlations are briefly discussed.

Type
Articles
Copyright
Copyright © Cambridge University Press 1973

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