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The Damuda series of Gondwana system has three stages, namely, Raniganj, Barren Rocks and Barakar. The middle stage is called Barren because

Options

  1. Ait consists of coal and not iron
  2. Bit consists of iron and not coal
  3. Cit consists of neither coal nor iron
  4. Dit is a sedimentary layer consisting of shale and clay

Correct answer

D. it is a sedimentary layer consisting of shale and clay

Step-by-step solution

The correct answer is option D.

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