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

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Talchir (Lower Gondwana) Sedimentation in Daltonganj Coal Field, Bihar, India


Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur, W. Bengal, India
     

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The sediments include glacial outwash plain, glacio-lacustrine delta and glacial lake deposits. Glaciers were probably of a piedmont type that existed towards the south and southwest of the basin. Melt water season seems to have dominated over winter season. Fluctuation in the ratio of melting controlled by short lived temperature variation resulted in the deposition of number of complete and incomplete sequences with draped lamination and ripple-drift cross lamination between two winter clay layers. The Palaeozoic sea which existed to the north of the basin was connected to the main basin at a late stage through a channel cut by glacier.
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  • Talchir (Lower Gondwana) Sedimentation in Daltonganj Coal Field, Bihar, India

Abstract Views: 175  |  PDF Views: 2

Authors

D. P. Sen
Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur, W. Bengal, India
A. Hatim
Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur, W. Bengal, India

Abstract


The sediments include glacial outwash plain, glacio-lacustrine delta and glacial lake deposits. Glaciers were probably of a piedmont type that existed towards the south and southwest of the basin. Melt water season seems to have dominated over winter season. Fluctuation in the ratio of melting controlled by short lived temperature variation resulted in the deposition of number of complete and incomplete sequences with draped lamination and ripple-drift cross lamination between two winter clay layers. The Palaeozoic sea which existed to the north of the basin was connected to the main basin at a late stage through a channel cut by glacier.