GENERAL GEOLOGY

Detailed explanation-1: -The longitudinal valleys which lie between lesser Himalaya and the Shivaliks are termed as Duns. Doon or Dun refers to a local word that is used for valley, particularly an open valley in the Siwaliks or between the Siwaliks and higher Himalayan foothills.

Detailed explanation-2: -Duns – the duns or duars are the valleys found in the Shiwalik range, these are open valleys between the Shivalik and the higher Himalayan foothills. These duns are longitudinal valleys which are formed due to folding which occurs when the Eurasian and the Indian plate collide with each other.

Detailed explanation-3: -Duns are longitudinal valleys created when the Eurasian plate and the Indian plate collided as a result of folding. Among lesser Himalayas and shiwaliks, they are formed. The valleys are accumulated with coarse alluvium passed down by Himalayan rivers. Examples of duns include kotli dun, dehra dun and patli dun.

Detailed explanation-4: -Explanation: The longitudinal valley lying between the lesser Himalayas and the Shiwaliks are known as Duns. They are formed due to deposits of the rivers which once accumulated in the region. The water drains out leaving behind deposits which are known as Duns in the west and Duars on the eastern side.

Detailed explanation-5: -The longitudinal valley lying between lesser Himalaya and the Shivaliks are known as Dims. Some well-known Duns are Dehra Dun, Kotli Dun and Patti Dun. Was this answer helpful?