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An overview of the Palaeoproterozoic geology of Peninsular India, and key stratigraphic and tectonic issues

By
Dilip Saha
Dilip Saha
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Rajat Mazumder
Rajat Mazumder
Geological Studies Unit and Fluvial Mechanics Laboratory, Indian Statistical Institute, 203 B.T. Road, Kolkata 700108, India
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Published:
January 01, 2012

Abstract

The Archaean–Proterozoic rock successions in India have the potential to enrich the global database on Precambrian stratigraphic development, and to offer valuable clues to global tectonic reconstructions. Built over four distinct Archaean cratonic nuclei, the major Palaeoproterozoic supracrustal belts/cover sequences include the Dhanjori Group, the Singhbhum Group (including the Dalma volcanics and the Chandil Formation in eastern India), the Cuddapah Supergroup and the adjoining Nellore Schist Belt bordering the eastern Dharwar Craton, the Aravalli Supergroup in the Aravalli–Delhi Fold Belt in NW India, the lower Vindhyan (Semri Group) and the Mahakosal/Sausar/Betul belts close to the Central Indian Tectonic Zone (CITZ), and, possibly, the Dongargarh Supergroup in Bastar. A major erosional unconformity separates the Archaean tonalite–trondjhemite gneiss basement in these cratons from the overlying volcano-sedimentary successions. An overview of Palaeoproterozoic stratigraphic development in these cratonic blocks is presented to bring out the salient features for global comparison and to highlight issues requiring further attention. Multiple metamorphic, magmatic and deformation events are recorded in the fold belts at the join of the cratons or their margins, inviting application of the plate tectonic paradigm. However, a comprehensive tectonic model for the amalgamation of the Indian Archaean nuclei is yet to emerge, and is crucial for our understanding of Palaeoproterozoic supercontinent development.

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Geological Society, London, Special Publications

Palaeoproterozoic of India

R. Mazumder
R. Mazumder
Geological Studies Unit, Indian Statistical Institute, Kolkata, India
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D. Saha
D. Saha
Geological Studies Unit, Indian Statistical Institute, Kolkata, India
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Geological Society of London
Volume
365
ISBN electronic:
9781862396135
Publication date:
January 01, 2012

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