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Dolomitic carbonatite from the Chotanagpur Granite Gneiss Complex:A New DARC (Deformed Alkaline Rocks and Carbonatite) in the Precambrian shield of India


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1 Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
 

The Chotanagpur Granite Gneiss Complex (CGGC) of the East Indian Shield records a protracted geological history ranging from Palaeo- to Meso- to Neoproterozoic time. It is commonly believed that the whole of the CGGC behaved as a unified crustal block at least from 1600 Ma (ref. 3). The E-W to ENE-WSW trending North Purulia Shear Zone (NPSZ) dissects and geographically divides the CGGC into the northern and southern blocks.
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  • Dolomitic carbonatite from the Chotanagpur Granite Gneiss Complex:A New DARC (Deformed Alkaline Rocks and Carbonatite) in the Precambrian shield of India

Abstract Views: 390  |  PDF Views: 123

Authors

Satabdi Das
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
Nandini Dasgupta
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
Sanjoy Sanyal
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
Shyamal Sengupta
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
Subrata Karmakar
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India
Pulak Sengupta
Department of Geological Sciences, Jadavpur University, Kolkata-700 032, India

Abstract


The Chotanagpur Granite Gneiss Complex (CGGC) of the East Indian Shield records a protracted geological history ranging from Palaeo- to Meso- to Neoproterozoic time. It is commonly believed that the whole of the CGGC behaved as a unified crustal block at least from 1600 Ma (ref. 3). The E-W to ENE-WSW trending North Purulia Shear Zone (NPSZ) dissects and geographically divides the CGGC into the northern and southern blocks.

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DOI: https://doi.org/10.18520/cs%2Fv113%2Fi06%2F1038-1040