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rock glacier

   Also found in: Wikipedia 0.01 sec.

rock glacier

Tonguelike body of coarse rock fragments, found above the timberline on mountains, that moves slowly down a valley. The rock material usually has fallen from the valley walls and may contain large boulders; it resembles the material left at the end (terminus) of a true glacier. A rock glacier may be 100 ft (30 m) deep and nearly a mile (1.5 km) long.

rock glacier [′räk ‚glā·shər]
(geology)
Boulders and fine material cemented by ice about a meter below the surface. Also known as talus glacier.
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For decades, researchers assumed that the molasses was created by small pockets of ice that had filled the pores of the surface rocks, lubricating the rocky material and causing it to slowly flow in what geologists call a rock glacier.
Mars conceals buried icy treasure; frozen water reserves discovered ... by Cowen, Ron / Science News
The 31 maps and 150 photographs illustrate sites such as dinosaur tracks, old mines, rock glaciers, and oysters in the desert.
Geology underfoot in southern Utah by Reference & Research Book News
The 31 maps and 150 photographs illustrate sites such as dinosaur tracks, old mines, rock glaciers, and oysters in the desert.
Geology underfoot in southern Utah by SciTech Book News
 
 
 
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