Mobile belts are garlands of high-grade metamorphic rocks encircling the stable cratonic nuclei. The mobile belts, in general, are composed of granulite facies meta-igneous and meta-sedimentary rocks when compared to the green schist to amphibolite facies rocks in the juxtaposed cratons. This observation was made by Fermor (1936) with respect to Indian subcontinent. Fermor (1936) designated this craton-mobile belt contact as “charnockite line” which separates Dharwar, Bastar and Singhbhum cratons and the Eastern Ghats Mobile Belt in the Southeastern part of India, and separates the Dharwar craton and Southern Granulite Terrain in Southern part of India. Singhbhum mobile belt, Satpura...
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