Answer: Dharwar system
Notes: Dharwar Rock System is special because it is the first metamorphic sedimentary rock in India. They are named Dharwar system because they were first studied in Dharwar region of Karnataka. But they are also found in the Aravallis, Tamil Nadu, Chotanagpur plateau, Meghalaya, Delhi, and the Himalayas region. Out of these, Chota Nagpur plateau is called the storehouse of minerals since it is rich in minerals such as mica, bauxite, copper, iron ore, etc.
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