Glacier, Persistent body of ice that is moving under its own weight.
A glacier (US: or UK: ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. Glaciers slowly deform and flow under stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques, moraines, or fjords. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that forms on the surface of bodies of water.
This article is copied from an article on Wikipedia® - the free encyclopedia created and edited by its online user
community. This article is distributed under the terms of GNU Free Documentation License.