Question

Briefly explain the geological evolution of the peninsular plateau. 

Answer 1

During the pre-Cambrian era, there was a large depression in which the sediment was deposited and a block of crystal rock known as the Peninsula Plateau came out of this depression and never submerged again. This stable land has behaved as a rigid and inflexible block throughout its geological history and is often compared to a horst.

Answer 2

• The Peninsular Plateau is the oldest landmass of India, formed during the Archean era over 2.5 billion years ago.
• It was once part of the Gondwanaland supercontinent.
• The plateau was created by volcanic activity and solidification of magma into igneous rocks like granite and gneiss.
• Over time, it became stable and rigid, experiencing erosion and denudation.
• The plateau remained stable, while the Himalayas were uplifted later due to tectonic activity.
• It has been divided into smaller plateaus like the Malwa, Deccan, and Chhotanagpur Plateaus.

Thus, the Peninsular Plateau is a result of ancient geological processes and long-term erosion.