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    • Keywords


      Talchir Formation; Gondwana Supergroup; Glacio-marine sediments; fluvio-lacustrine; glacio-isostacy

    • Abstract


      Basal part of the Gondwana Supergroup represented by Talchir and Karharbari Formations (Permo-Carboniferous) records an abrupt change-over from glacio-marine to terrestrial fluviolacustrine depositional environment. The contact between the two is an unconformity. Facies analysis of the glacio-marine Talchir Formation reveals that basal glaciogenic and reworked glaciogenic sediments are buried under storm influenced inner and outer shelf sediments. Facies associations of the Karharbari Formation suggest deposition as fluvio-lacustrine deposits in fault-controlled troughs. An attempt has been made in this paper to explain the sedimentation pattern in Talchir and Karharbari basins, and the abrupt change-over from glacio-marine to terrestrial fluviolacustrine depositional environment in terms of glacio-isostacy.

    • Author Affiliations


      H N Bhattacharya1 Abhijit Chakraborty2 Biplab Bhattacharya1

      1. Department of Geology, Presidency College, Calcutta - 700 073, India
      2. Department of Geology, Jogamaya Devi College, 92 S.P. Mukherjee Road, Calcutta - 700 026, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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