write a short note on formation of himalyas ?

A) The earth is composed of several plates. In the past there was only one huge land mass or the Pangea. This Pangea broke up and drifted apart from one another. The Gondwana land was the southern part of this Pangea. Due to conventional current, this Gondwana land was further broken down and split into several parts. One part of this Gondwana, the Indo-Australian plate started drifting towards the North. As a result it collided with the Eurasian plate in the North. This collision caused the sedimentary deposition of the Tethys to get folded forming the Himalayas.

B) Himalayas are regarded to be still youth  because these have been formed in the late Cretaceous-Tertiary Period i.e. relatively recently in the earth's history, compared to older mountain ranges like the Aravallis in India, and the Appalachian in the USA.

C) The India Plate continuously moving north at the rate of about 2 cm per year and so the Himalayas are still geologically active and structurally unstable.