How a cirque forms?

Answer 1

Cirques begin as irregularities in the mountainside that are subsquently enlarged by frost wedging and plucking along the sides and bottom of the glacier.

The glacier in turn acts as a conveyor belt that carries away the debris

Answer 2

Cirques form in conditions which are favorable; in the northern hemisphere the conditions include the north-east slope where they are protected from the majority of the sun's energy and from the prevailing winds. These areas are sheltered from heat, encouraging the accumulation of snow; if the accumulation of snow increases, the snow turns into glacial ice. The process of nivation follows, whereby a hollow in a slope may be enlarged by freeze-thaw weathering and glacial erosion. The freeze-thaw cycle erodes at the lower rocks and causes it to disintegrate, which may result in an avalanche bringing down more snow and rock to add to the growing glacier. Eventually, this hollow may become large enough that glacial erosion intensifies. Debris (or till) in the ice also may abrade (glacial abrasion) the bed surface; should ice move down a slope it would have a 'sandpaper effect' on the bedrock beneath, on which it scrapes.

From Wikipedia, the free encyclopedia

Answer 3

A cirque forms through the erosional processes of glacial ice. As a glacier moves downhill, it erodes the surrounding rock through processes such as plucking and abrasion, creating a deep, armchair-shaped amphitheater called a cirque. Snow accumulates in the cirque and compacts into ice, which then flows downvalley as a glacier.

Answer 4

The Cieque forms by glaciers

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Answer 5

A cirque is formed by a glaciers