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Peninsular Plateau is the oldest and largest Physiographic unit of India.
Note: Kutchch Kathiawar region – The region, though an extension of Peninsular plateau (because Kathiawar is made of the Deccan Lava and there are tertiary rocks in the Kutch area), they are now treated as integral part of the Western Coastal Plains as they are now levelled down.
The peninsular plateau is a tableland which contains igneous and metamorphic rocks. It is one of the oldest and the most stable landmass of India.
In its otherwise stable history, the peninsula has seen a few changes like:
During its journey northward after breaking off from the rest of Gondwana, the Indian Plate passed over a geologic hotspot, the Réunion hotspot, which caused extensive melting underneath the Indian Craton. The melting broke through the surface of the craton in a massive flood basalt event, creating what is known as the Deccan Traps (Its various features have been discussed in the later portion of the article).
The entire peninsular plateau region is an aggregation of several smaller plateaus and hill ranges interspersed with river basins and valleys. The Chhattisgarh plain occupied by the dense Dandakaranya forests is the only plain in the peninsula.
1. General elevation and flow of rivers:
2. Some of the important physiographic features of this region are:
3. The Deccan Traps:
That’s it for this part! In the next article, we will focus on the physiographic divisions of the Peninsular Plateau. (Click here for the next part)