Oldest Landmass in India:

India has a diverse topography with different landforms and divisions. The country can be broadly divided into three geological divisions- the peninsular part, the Himalayan mountain range, and the Indo-Gangetic plain. Out of these three divisions, the peninsular part has the oldest landmass.

The Peninsular Part:

The peninsular part of India is a vast region that comprises the Deccan Plateau and the Eastern and Western Ghats. It covers the southern part of India and is surrounded by water on three sides- the Arabian Sea to the west, the Bay of Bengal to the east, and the Indian Ocean to the south.

The peninsular part of India is made up of ancient rocks, some of which are more than a billion years old. These rocks were formed during the Precambrian era and were part of the Gondwana landmass.

The peninsular region of India consists of several plateaus and hill ranges, including the Malwa Plateau, the Satpura Range, the Vindhya Range, and the Eastern and Western Ghats. These landforms have been formed due to various geological processes over millions of years.

The Himalayan Mountain Range:

The Himalayan mountain range is the youngest landform in India and is still being formed. The range is located in the northern part of India and stretches for over 2,400 kilometers from the Indus River in the west to the Brahmaputra River in the east.

The Himalayas were formed due to the collision of the Indian and Eurasian tectonic plates. This collision caused the upliftment of the Himalayan range, which is still continuing at a rate of 5mm to 10mm per year.

The Himalayan range is home to some of the highest peaks in the world, including Mount Everest, K2, and Kangchenjunga.

The Vindhya Mountain Range:

The Vindhya mountain range is a range of hills and mountains that stretches for over 1,000 kilometers across central India. The range separates the northern part of India from the Deccan Plateau.

The Vindhya range is made up of sedimentary rocks that were formed during the Cenozoic era. These rocks are relatively younger than the rocks in the peninsular part of India.

Conclusion:

In conclusion, the peninsular part of India has the oldest landmass. The region is made up of ancient rocks that were formed during the Precambrian era and were part of the Gondwana landmass. The Himalayan range is the youngest landform in India and is still being formed, while the Vindhya range is relatively younger than the rocks in the peninsular part of India.