A glacial horn (or, if unambiguous from context, simply a horn) is a mountain formed by glacial erosion. When three or more glaciers erode cirques into the same bedrock, a typical pyramidal peak remains at the junction of the cirques. That peak is a glacial horn.
The most famous glacial horn is the Matterhorn, in Switzerland. Other notable examples of glacial horns include
A glacier that is smaller than a continental glacier or an icecap, and which flows mainly along well-defined valleys, many with tributaries.
For example, the mass of a glacier is not destroyed or created; the mass of a glacier and all its constitutive components remains the same despite alteration in their physical states.
The mass balance of a glacier is calculated with the input/output relationships of ice, firn and snow, usually measured in water equivalent.
These cirqueglaciers eroded the bedrock in headward and lateral directions, and as the volume of ice expanded, the toes of the glaciers advanced down the valleys, sculpturing the v-shaped stream valleys into u-shaped glacial forms called glacial troughs.
The Teton Glacier is nestled beneath the sheer 3,000 foot-high North Face of the Grand and occupies a cirque at the head of the valley of Glacier Gulch.
During retreat of the piedmont glaciers, poorly sorted and unstratified material called till was deposited during standstills at the margins of the ice.
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