avalanche deposit

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• Avalanche — This article refers to the natural event. For other uses, see Avalanche (disambiguation) An avalanche is an abrupt and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are among the biggest dangers in the… …   Wikipedia

• debris avalanche — ALASKA VOLCANO OBSERVATORY GLOSSARY Rapidly moving, dry flows of disaggregated rock debris, sand, and silt. Volcanic debris avalanches commonly form by some type of structural collapse of the volcano, usually the steep front of the cooled lava… …   Glossary of volcanic terms

• debris avalanche —    The mass movement process, associated sediments (debris avalanche deposit), or resultant landform characterized by a very rapid to extremely rapid type of flow dominated by the sudden downslope movement of incoherent, unsorted mixtures of soil …   Glossary of landform and geologic terms

• rockfall avalanche —    The mass movement process, associated sediments (rockfall avalanche deposit), or resultant landform characterized by an extremely rapid, large type of flow (a type of landslide) that starts as a rockfall but turns into a flow and… …   Glossary of landform and geologic terms

• Socompa — Infobox Mountain Name = Socompa Photo = Salar de Atacama Pular.jpg Caption = Salar de Atacama with Pular (leftmost), Cerro Pajonales (left) and Socompa (right) in the distance. Elevation = convert|6051|m|ft|0|abbr=on|sp=us Location = Argentina,… …   Wikipedia

• 1980 eruption of Mount St. Helens — Photograph of the eruption column, May 18, 1980 Volcano Mount St. Helens …   Wikipedia

• hummock — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Hummocks are rounded or conical mounds within a volcanic landslide or debris avalanche deposit. Hummocks contain a wide range of rock debris, reflecting the variation of deposits that previously formed the… …   Glossary of volcanic terms

• Galunggung — Lightning strikes during the 1982 eruption of Galunggung Elevation 2,168 m (7,113 ft) …   Wikipedia

• Ubinas — Volcano seen from the west Elevation 5,672 m (18,609 ft)  …   Wikipedia

• Hummock — A hummock (of uncertain derivation; cf. hump or hillock) is a boss or rounded knoll of ice rising above the general level of an ice field, making sledge travelling in the Arctic and Antarctic region extremely difficult and unpleasant.Hummocky ice …   Wikipedia

• Peter Francis — Peter William Francis (1944 ndash;1999) was a British volcanologist specialising in the study of active volcanoes on both the Earth and other planets in our solar system. He was also renowned for his ability as a communicator, reaching the… …   Wikipedia