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Eduncle posted an MCQ
October 19, 2019 • 15:09 pm 0 points
  • IIT JAM
  • Geology (GG)

Arrange the following formations of the Gondwana Supergroup in order of their decreasing age:

(i) Raniganj Formation (ii) Barakar Formation (iii) Kulti Formation (iv) Karharbari Formation

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    Eduncle Best Answer

    (i) Basal part of the Gondwana Supergroup represented by Talchir and Karharbari Formations (Permo-Carboniferous) records an abrupt change-over from glacio marine to terrestrial fluvio lacustrine depositional environment.
    (ii) The coal-bearing Barakar Formation (early Permian) of the Raniganj Gondwana basin was previously interpreted as continental fluvial sediments with little evidence for tide-wave influences.
    (iii) The coal-bearing Barakar Formation (early Permian) of the Raniganj Gondwana basin was previously interpreted as continental fluvial sediments with little evidence for tide-wave influences.
    (iv) Barakar and Raniganj formation have many coal seams.

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