Distinguish between Gondawana and tertiary coals.
Followings are the differences between Gondawana and tertiary coals.
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Gondwana Coals |
Tertiary Coals |
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1. The Gondwana formation is 200 million years old. |
1. Tertiary formation is 55 million years old. |
|
2. 80 coal fields are in the lower Gondwana system. |
2. 33 coal fields are identified as tertiary system, |
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3. It is found in Damodar, Son, Mahanadi and Wardha-Godawari river valley. |
3. Tertiary coal occurs in Assam, Arunachal pradesh, Meghalaya and Nagaland. |
