Discussion
Which of the following schist belt is the youngest ?
Answer: D
The youngest is the Dharwar schist belt.
In the Dharwar craton the greenstone belts fall into two groups. The Sargur Group belts are the oldest, about 3.3-3.0 Ga, and include those of the Sargur type area and similar enclaves in the south such as Wynad and Sathyamangalam. The Dharwar Supergroup belts, such as Chitradurga and Shimoga, are younger, about 2.9-2.6 Ga, and rest unconformably on the Peninsular Gneiss that intrudes the Sargur rocks.
So Sargur, Wynad and Sathyamangalam belong to the older group, and Dharwar is the youngest.
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