GEOLOGY
GEOMORPHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Garwood
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D.w.johnson
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W.h.hobbs
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Kar
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Detailed explanation-1: -Cirque [French, Cirque; German, Kar; Norwegian, Botn; Welsh, Cwm; Scottish, Corrie; Spanish, Hoyo and Circo ] as a term in geomorphology was introduced by Charpentier (Brothers), Jean pr Vol. VIII Charpentier (1823) for basins of semicircular form found in the Pyrenees.
Detailed explanation-2: -Cirque is a type of glacial erosional landform. It is also known as a corrie. They are deep, long and wide troughs or basins with very steep concave to vertically dropping high walls at its head as well as sides. A cirque is basically a bowl-shaped depression formed by the erosional activity of a glacier.
Detailed explanation-3: -Corries form in hollows where snow can accumulate. The snow compacts into ice and this accumulates over many years to compact and grow into a corrie/cirque glacier.
Detailed explanation-4: -A cirque is formed by ice and denotes the head of a glacier. As the ice goes melts and thaws and progressively moves downhill more rock material is scoured out from the cirque creating the characteristic bowl shape. Many cirques are so scoured that a lake forms in the base of the cirque once the ice has melted.