Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Depositional History of Permo-Carboniferous Tillites and Associated Sediments in W. Bokaro Gondwana Basin, Bihar, India


Affiliations
1 Geological Survey of India, Calcutta., India
2 Department of Geology, I.I.T., Kharagpur-721302, India
     

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The Talchir Group of rocks in India form a very important stratigraphic horizon by their presence at the base of all the Gondwana basins. Talchirs have been recognised as glacial sediments. The present study suggests that the Talchir Group was deposited both as stratified drift and unstratified drift. The glaciers responsible for Talchir sedimentation in eastern India belong to piedmont glacier system. The number of times the glacial lobes advanced into different basins varies from basin to basin. In all the basins the bulk of the sediments was deposited during first deglaciation period as meltwater channel, esker, glaciolacustrine delta and lake deposits. The topography surrounding the basin during upper Talchir time provided infra-structure for Barakar sedimentation.
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  • Depositional History of Permo-Carboniferous Tillites and Associated Sediments in W. Bokaro Gondwana Basin, Bihar, India

Abstract Views: 186  |  PDF Views: 2

Authors

S. N. Das
Geological Survey of India, Calcutta., India
D. P. Sen
Department of Geology, I.I.T., Kharagpur-721302, India

Abstract


The Talchir Group of rocks in India form a very important stratigraphic horizon by their presence at the base of all the Gondwana basins. Talchirs have been recognised as glacial sediments. The present study suggests that the Talchir Group was deposited both as stratified drift and unstratified drift. The glaciers responsible for Talchir sedimentation in eastern India belong to piedmont glacier system. The number of times the glacial lobes advanced into different basins varies from basin to basin. In all the basins the bulk of the sediments was deposited during first deglaciation period as meltwater channel, esker, glaciolacustrine delta and lake deposits. The topography surrounding the basin during upper Talchir time provided infra-structure for Barakar sedimentation.