How cirque are formed

The following are steps which lead to the formation of cirque

  • Snow accumulates in the shallow pre-existing depression on the mountainside
  • the snow gets compacts into ice to form a cirque glacier
  • the ice erodes the bottom of the hollow by abrasion making it deeper
  • frost action and plucking operates on the sides of the hollow making it steeper
  • eventually s deep and an armchair shaped feature called cirque is formed