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GS Geography Physical Geography of World
Q.

Hanging Valley is formed due to the action of:
Explanation:

ANS. (A) 
A hanging valley is a tributary valley with the flat a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume. The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley. Since the surfaces of the glaciers were originally at the same elevation, the shallower valley appears to be ‘hanging’ above the main valley.

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