WBCS.LIVE practice question

Which of the following geological formations is considered the oldest in the state of West Bengal?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Laterites of the Rarh region
  2. Darjeeling Gneiss
  3. Gondwana rocks of the Damodar Valley
  4. Deltaic alluvium of the Sundarbans

Correct answer and explanation

Correct answer: Darjeeling Gneiss

Explanation: āœ… Correct Answer: B) Darjeeling Gneiss šŸ“š Explanation: The geological structure of West Bengal ranges from the oldest Precambrian rocks to recent Holocene alluvium. The Darjeeling Gneiss, found in the northern mountainous region of the Darjeeling Himalayas, belongs to the Precambrian era and is the oldest rock formation in the state. The Gondwana rocks and laterites were formed in much later geological periods.