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Transverse crevasses, Chugach State Park, Alaska A crevasse is a deep crack that forms in a glacier or ice sheet. Crevasses form as a result of the movement and resulting stress associated with the shear stress generated when two semi-rigid pieces above a plastic substrate have different rates of movement.
Cross section of a cirque glacier showing the bergschrund A bergschrund—the long crack at the foot of the mountain slope—in the Ötztal Alps Open bergschrunds at Mont Dolent
An icefall is a portion of certain glaciers characterized by relatively rapid flow and chaotic crevassed surface, caused in part by gravity. The term icefall is formed by analogy with the word waterfall, which is a similar phenomenon of the liquid phase but at a more spectacular speed. When ice movement of a glacier is faster than elsewhere ...
The Vallée Blanche ski run is a 20 km (12 miles) long, unmarked off-piste ski route which begins very steeply from the Aiguille du Midi station and, because of its complexity across crevassed glaciated terrain and needs for route-finding, is best undertaken with a mountain guide. [7]
A snow bridge across a creek. A snow bridge is an arc formed by snow across a crevasse, a crack in rock, a creek, or some other opening in terrain. [1] It is typically formed by snow drift, which first creates a cornice, which may then grow to reach the other side of the opening.
The Linehan Glacier and Lowery Glacier define the western boundary, and the Robb Glacier the eastern boundary. Features around the Ārai Terraces include Bengaard Peak to the south, Softbed Ridges, Fazekas Hills and Mount Oona to the north.
They traversed up the heavily crevassed glacier to a fuel cache deposited on the edge of the Victoria Land plateau by planes of the United States Navy and Air Force. From there they travelled more than 600 miles (970 km) to the end station of the French 1958–59 traverse, then east toward the head of Tucker Glacier .
It is very crevassed in its north half, but there is a good route of easy gradient through it toward its southern end. Biscuits were an important part of the expedition's rations (Australasian colloquialism "tucker"), and a small cache of them was left near the step for the return down the glacier by the NZGSAE, 1957-58, which named the feature.