Question

Classify coal deposits found in India on the basis of geological ages.

Answer 1

In India Coal occurs in rock series of two main geographical ages, namely gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old.

The major resources of Gondwana coal, which are metallurgical coal, are located inDamodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields.

The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits.

Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland.

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Answer 2

Answer:

the coal deposits on the basis of their age can be classified as Gondwana coal which is approximately 105 million years old and tertiary coal which is just approximately 88 million years old.

Explanation:

In India, coal is found in rock formations of two main geological ages. Gondwana coal was formed more than 200 million years ago. Tertiary deposits are about 55 million years old. Gondwana's main sources of  coal are  in the Damodar Valley (West Bengal). -Jharkhan). In this belt, Jharia, Raniganj and Bokaro are important coal deposits.Coal deposits are also present in the Godavari, Mahanadi, Son and Wardha valleys. Tertiary coal occurs in the northeastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. In India, coal was mined in two geological periods: Gondwana and Tertiary deposits. .Gondwana is a little over 200 million years old.Gondwana's main coal deposits, metallurgical coal, are located in Damodar Valley (West Bengal, Jharkhand). Jharia, Raniganj, Bokaro are important coal deposits. Tertiary deposits are only 55 million years old. Tertiary coals are found in the northeastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland.

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Gondwana coal deposits are found in

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