Which of the following statements relating to Dharwar geological syste

Which of the following statements relating to Dharwar geological system are correct ?

  • 1. They belong to Archaean geological period
  • 2. They are metamorphosed sedimentary rocks
  • 3. They are of great economic importance for its mineral resources
  • 4. They are found predominantly in Karnataka, Tamil Nadu, Odisha and Jharkhand

Select the correct answer using the code given below :

1, 2, 3 and 4
2, 3 and 4 only
3 and 4 only
1 and 2 only
This question was previously asked in
UPSC CAPF – 2016
All four statements relating to the Dharwar geological system are correct in the context of general geological understanding.
1. They belong to Archaean geological period: The Dharwar Supergroup represents formations predominantly from the Late Archaean to Early Proterozoic eons. Referring to them as belonging to the Archaean period is appropriate as this covers a significant part of their formation age and geological importance.
2. They are metamorphosed sedimentary rocks: Dharwar sequences include metamorphosed sedimentary and volcanic rocks, characteristic of greenstone belts found in ancient cratons. This statement is correct.
3. They are of great economic importance for its mineral resources: The Dharwar regions are rich in valuable mineral deposits, including gold (Hutti and Kolar), iron ore, manganese, copper, etc. This statement is correct.
4. They are found predominantly in Karnataka, Tamil Nadu, Odisha and Jharkhand: The core Dharwar Craton is located in Karnataka, but formations of similar age and characteristics extend into adjoining states like Tamil Nadu, Andhra Pradesh, Maharashtra, Odisha, and Jharkhand. Listing these states is accurate regarding their predominant presence.
The Dharwar Craton is one of the oldest and most stable continental blocks globally, providing insights into early Earth processes and hosting significant mineral wealth.
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