In which of the following regions of India are shale gas resources found?

1. Cambay Basin
2. Cauvery Basin
3. Krishna-Godavari Basin

Select the correct answer using the code given below.

1. 1 and 2 only
2. 3 only
3. 2 and 3 only
4. 1, 2 and 3

Explanation

All are correct

• Shale gas consists mainly of methane, with small amounts of ethane, propane, butane, & trace levels of carbon dioxide, nitrogen, and hydrogen sulfide. Shales are fine-grained sedimentary rocks formed of organic-rich mud at the bottom of ancient seas.
• In India, the sedimentary basins that hold prospects for shale oil and gas are Cambay Basin, Gondwana Basin, Krishna Godavari (KG) Basin, Cauvery Basin, Indo-Gangetic Basin, and Assam-Arakan Basin.

Answer: (d) 1, 2 and 3; Difficulty Level: Hard