1. Aravali system
  2. Archean system
  3. Cuddapah system
  4. Vindhayan system
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Option 2 : Archean system

Option 2 is correct, i.e. Archean system.

  • The Archean system contains the oldest rock formation of India.
  • These rocks have been termed as a result of the hot-molten earth becoming cold.
  • The rocks of the Archaean system are found mainly in Karnataka, Tamil Nadu, Andhra Pradesh, Madhya Pradesh, Orissa, Chotanagpur plateau in Jharkhand and the southern-eastern part of Rajasthan.
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