Dear Student
Answer to your question is as follows :
The geology of the Himalayas they form an arc, which covers a distance of about 2,400 Km
Their width varies from 400 Km in Kashmir to 150 Km in Arunachal Pradesh.
The Himalayas, geologically young and structurally fold mountains stretch over the northern borders of India.
The Himalaya consists of three parallel ranges in its longitudinal extent.
Regards