Discussion
The age of Gondwana coal in India is :
Answer: A
Gondwana coal in India is of Permo-Carboniferous age.
Almost all of India's coal, about 98% of reserves, comes from the Lower Gondwana rocks of the Damodar, Son-Mahanadi, Godavari and Satpura valleys. The main coal-bearing formations, the Karharbari, Barakar and Raniganj, are Early to Late Permian, deposited after the Late Carboniferous Talchir glaciation, which is why the age is usually given as Permo-Carboniferous.
India's younger coals are Tertiary: the Palaeogene coals and lignites of Assam, Meghalaya, Gujarat and Tamil Nadu (Neyveli lignite is Neogene). Jurassic coal is not significant in India.
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