Which rock system in India is regarded as the oldest metamorphosed sedimentary rock system and contains India's richest deposits of metallic minerals like iron ore and manganese?

💡 Solution & Explanation

The Dharwar rock system comprises the earliest metamorphosed sedimentary rocks formed between 2.5 and 1.8 billion years ago and is exceptionally rich in metallic minerals like iron ore, manganese, and gold. The Cuddapah system contains mostly non-metallic minerals, while Gondwana formations contain coal. This geological classification is fundamental to understanding India's mineral resource distribution.