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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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