lahar

   The landform and sediments (i.e., lahar deposit) emplaced by, and the process associated with, a mudflow composed mainly of volcaniclastic debris on or near the flank of a volcano. Sediment composition includes pyroclastic material, primary lava-flow blocks and fragments, and nonvolcanic material. Thick lahar deposits may have crude (poorly sorted) upward-fining strata. A lahar is initially unconsolidated material, but through cementation and compression can become bedrock.
   SW & GG

Glossary of landform and geologic terms. 2013.

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  • Lahar — am Mount St. Helens (März 1982) Der ursprünglich indonesische Begriff Lahar bezeichnet Schlamm und Schuttströme, die von einem Vulkan ausgehen. Dabei mischen sich eruptives Material, zum Teil metergroße Blöcke, mit Lockersedimenten und Wasser. Je …   Deutsch Wikipedia

  • Lahar — sur les pentes du volcan Santa María, au Guatemala, le 14 août 1989. Un lahar est une coulée boueuse d’origine volcanique. Elle est principalement formée d’eau, de cendres volcaniques et de tephras et se rencontre donc le plus souvent sur les… …   Wikipédia en Français

  • lahar — lahár s. n., pl. laháre Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  LAHÁR s.n. (geol.) Curgere noroioasă care apare în cazul unor erupţii vulcanice însoţite de ploi abundente. [< fr. lahar < cuv. indonezian]. Trimis de… …   Dicționar Român

  • Lahar —   [malaiisch] der, s/ s, Mure aus einem Brei von vulkanischer Asche mit Regen oder Schmelzwasser, auch durch Entleerung eines Kratersees verursacht. * * * La|har, der; s s [malai. lahar] (Geol.): bei Vulkanausbrüchen austretender heißer Strom von …   Universal-Lexikon

  • lahar — ● lahar nom masculin (mot javanais) Coulée boueuse de flanc de volcan …   Encyclopédie Universelle

  • Lahar — A light weight soft crepe made of fine cotton warp and silk weft in Bombay and Madras on hand looms, plain weave …   Dictionary of the English textile terms

  • lahar — [lä′här΄, lä här′] n. 1. a mudflow down the side of a volcano, containing pieces of hardened lava, ash, etc. 2. the deposit of such a mudflow …   English World dictionary

  • Lahar — A lahar is a type of mudflow / landslide composed of pyroclastic material and water that flows down from a volcano, typically along a river valley.cite web|url= http://volcanoes.usgs.gov/Products/Pglossary/lahar.html|title=Lahar|work=USGS Photo… …   Wikipedia

  • Lahar — Para otros usos de este término, véase Lahar (desambiguación). Lahar tras una erupción, Monte Saint Helens …   Wikipedia Español

  • lahar — ALASKA VOLCANO OBSERVATORY GLOSSARY An Indonesian term for a debris flow containing angular clasts of volcanic material. For the purposes of this report, a lahar is any type of sedimentwater mixture originating on or from the volcano. Most lahars …   Glossary of volcanic terms

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