How does Indian landmass display a great physical contrast?

1. Geologically, the Peninsular Plateau is one of the ancient landmasses.

i. It is the most stable land block.

ii. The Himalayas and the other mountains of the north and the plains lying south of them and the Deccan Plateau are the most recent developments.

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2. Tectonically these recent developments form one of the unstable zones.

Over millions of years, the denudational processes have made these contrasts sharper.

(a) The youthful mountain topography of the north with lofty peaks steep sided valleys of the mountain are composed of sedimentary and metamorphic rocks.

(b) Northern plains are composed of alluvium. They form world’s largest depositional surface.

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(c) In the south, the Peninsular Plateau is composed of igneous and metamorphic rocks. They depict senile topography dominated by gently rising ridges and wide valleys. Despite the diverse natural relief features, India has a complementarily between these land features.