Journal of Earth System Science

, Volume 113, Issue 4, pp 543–563 | Cite as

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



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.


Eastern Ghats Singhbhum craton enclaves different protoliths collisional magmatism 


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© Printed in India 2004

Authors and Affiliations

  1. 1.Indian Statistical InstituteKolkataIndia
  2. 2.Department of GeologyJ.K. CollegePuruliaIndia

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