Q. Consider the following statements about Peninsular Block:

1. Since the Cambrian period, the Peninsula has been standing like a rigid block.
2. As a part of the Indo-Australian Plate, it has been subjected to various vertical movements and block faulting.
3. The rift valleys of the Narmada, the Tapi and the Mahanadi and the Satpura block mountains are some examples of it.

Which of the above is / are correct?
Answer: All of the above
Notes: The Peninsula is formed essentially by a great complex of very ancient gneisses and granites, which constitute a major part of it. Since the Cambrian period, the Peninsula has been standing like a rigid block with the exception of some of its western coast which is submerged beneath the sea and some other parts changed due to tectonic activity without affecting the original basement.