A flow of unsorted masses of rock and other material downslope under the influence of gravity. Water is commonly involved as a catalyst and/or lubricant. For example
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http://jersey.uoregon.edu/~mstrick/geology/geo_glossary_page.html
A rapid and unusually sudden sliding or flowage of unsorted masses of rock and other material. As applied to the major avalanche involved in the eruption of Mount St. Helens, a rapid mass movement that included fragmented cold and hot volcanic rock, water, snow, glacier ice, trees, and some hot pyroclastic material. Most of the May 18 deposits in t...
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http://midju.tripod.com/glossary.html
(from the article `landslide`) ...gravity, and land on a surface from which they bounce and fall farther. Falls of large volume can trap enough air to facilitate the very rapid ...
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http://www.britannica.com/eb/a-z/d/21
A debris avalanche rushes down the side of a volcano to the valley floor. Many such debris avalanches transform into lahars and travel tens of kilometers from the volcano. Note horseshoe shaped crater on volcano's side, which is the scar created by the avalanche. Credit: B. Myers / U.S. Geological ...
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http://www.daviddarling.info/encyclopedia/D/debris_avalanche.html
A rapid and unusually sudden sliding or flowage of unsorted masses of rock and other material. As applied to the major avalanche involved in the eruption of Mount St. Helens, a rapid mass movement that included fragmented cold and hot volcanic rock, water, snow, glacier ice, trees, and some hot pyroclastic material. Most of the May 18, 1980 deposit...
Found on
http://www.encyclo.co.uk/local/21455
The sudden downslope movement of rock and soil on a steep slope.
Found on
http://www.encyclo.co.uk/local/22392
A fast downhill mass movement of soil and rock from an unstable slope.
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http://www.scientificpsychic.com/etc/geology-glossary.html
A sudden collapse of volcanic material from an unstable side of a volcano.
Found on
https://www.encyclo.co.uk/local/21337
No exact match found.
