Question

how were the great Himalayan plains formed

Answer 1

The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.

Answer 2

Hey there!

I've Seen many report on "How Himalayas were formed?" on National Geographic Channel

According to me, formation of the Great Himalyas is a result of a continental collision or orogeny along the convergent boundary between the Indo-Australian Plate and the Eurasian Plate.

The Arakan Yoma highlands in Myanmar and the Andaman and Nicobar Islands in the Bay of Bengal were also formed as a result of this collision.

Indian landmass (Indian plate) 6,000-kilometre-plus journey before its collision with Asia (Eurasian Plate) about 40 to 50 million years ago.

HOPE IT HELPS ^_^