Paragraph on Purana Rock System (Proterozoic) of India

Here is your paragraph on the Purana rock system (Proterozoic) of India! In India, the word purana has been used in place of Proterozoic and includes two divisions the Cuddapah System and the Vindhyas. The Cuddapah System: A long interval of time elapsed before the rock system next to the Dharwars and Peninsular gneisses began to be deposited. A great [...]