rock glacier
Link: http://w3id.org/permafrost/v/ipaglossary/t0280
Within: IPA Permafrost Glossary
Definition: A mass of rock fragments and finer material, on a slope, that contains either interstitial ice or an ice core and shows evidence of past or present movement.
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rock glacier
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Rock glaciers do not form where there is insufficient moisture to form the interstitial ice that permits movement of the mass. Some are believed to have been formed, at least partly, by burial of glacier ice. Active rock glaciers move at speeds up to 50 m per year and possess steep fronts with slope angles greater than the angle of repose. Rock glaciers are said to be inactive when the main body ceases to move. Most rock glaciers have transverse ridges and furrows on their surface.
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| dcterms:source |
https://doi.org/10.4224/20386561
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