Question

Why Himalayas are called young and fold mountains?

Answer 1

They are young because they are being formed from the collision between India and Asia, a collision which began only about 30 million years ago and is still going on. They are folded mountains because they are formed by folding of the rocks along the edges of both continents from the force, pressure, and heat of the collision. We'll also find low-angle thrust faults at depth in abundance, but they qualify as folded mountains, like the Appalachians or the Alps.

Answer 2

they are called young because they are not very old as they got formed because of the collision of indo-australian plate with much larger eurasian plate and got folded so that is why they are called fold and young mountains