• Petrogenesis of granitoid rocks at the northern margin of the Eastern Ghats Mobile Belt and evidence of syn-collisional magmatism

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      https://www.ias.ac.in/article/fulltext/jess/113/04/0543-0563

    • Keywords

       

      Eastern Ghats; Singhbhum craton; enclaves; different protoliths; collisional magmatism

    • Abstract

       

      The northern margin of the Eastern Ghats Mobile belt against the Singhbhum craton exposes granitic rocks with enclaves from both the high-grade and low-grade belts. A shear cleavage developed in the boundary region is also observed in these granitoids. Field features and petrography indicate syn-tectonic emplacement of these granitoids. Petrology-mineralogy and geochemistry indicate that some of the granitoids are derived from the high-grade protoliths by dehydration melting. Others could have been derived from low-grade protoliths. Moreover, microstructural signatures in these granitoids attest to their syn-collisional emplacement.

    • Author Affiliations

       

      S Bhattacharya1 Rajib Kar2 S Moitra1

      1. Indian Statistical Institute, 203 B.T. Road, Kolkata - 700 108, India
      2. Department of Geology, J.K. College, Purulia - 723 101, India
    • Dates

       
  • Journal of Earth System Science | News

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