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permafrost rock

См. также в других словарях:

  • Rock glacier — Rock glaciers are distinctive geomorphological landforms of blocky detritus which may extend outward and downslope from talus cones or from glaciers or the terminal moraines of glaciers. Their growth and formation is subject to some debate, with… …   Wikipedia

  • permafrost — /perr meuh frawst , frost /, n. (in arctic or subarctic regions) perennially frozen subsoil. Also called pergelisol. [1943; PERMA(NENT) + FROST] * * * Perennially frozen earth, with a temperature below 32 °F (0 °C) continuously for two years or… …   Universalium

  • permafrost —    Ground, soil, or rock that remains at or below 0 °C for at least two years. It is defined on the basis of temperature and is not necessarily frozen (i.e., cemented by ice).    Compare: continuous permafrost, discontinuous permafrost, sporadic… …   Glossary of landform and geologic terms

  • rock glacier —    A mass of poorly sorted angular boulders and fine material, with interstitial ice a meter or so below the surface (ice cemented) or containing a buried ice glacier (ice cored). It occurs in a permafrost area, and is derived from a cirque wall… …   Glossary of landform and geologic terms

  • glacial landform — ▪ geology Introduction  any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …   Universalium

  • arctic — arctically, adv. /ahrk tik/ or, esp. for 7, /ahr tik/, adj. 1. (often cap.) of, pertaining to, or located at or near the North Pole: the arctic region. 2. coming from the North Pole or the arctic region: an arctic wind. 3. characteristic of the… …   Universalium

  • Drunken trees — Not to be confused with the floss silk tree, also known as the drunken tree or palo borracho. A drunken forest in Siberia caused by melting permafrost. NASA photo. Drunken trees, tilted trees, or a drunken forest, is a stand of trees displaced… …   Wikipedia

  • Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

  • Blockgletscher — am Bettmerhorn Blockgletscher sind Schutt Eisgemenge, die sich im aktiven Zustand langsam tal oder hangabwärts bewegen. Sie bestehen aus gefrorenem Lockermaterial, wie Hangschutt oder Moräne. Da das Gestein Eis Gemisch unter dem oberflächlichen… …   Deutsch Wikipedia

  • Glacier Rocheux — dans les monts Wrangell St Elias en Alaska. Un glacier rocheux est une masse de débris rocheux mélangés à de la glace se déplaçant à très faible vitesse (quelques centimètres à quelques mètres par an) sur un versant. Sur plusieurs milliers d… …   Wikipédia en Français

  • Glacier rocheux — dans les monts Wrangell St Elias en Alaska. Un glacier rocheux est une masse de débris rocheux mélangés à de la glace se déplaçant à très faible vitesse (quelques centimètres à quelques mètres par an) sur un versant. Sur plusieurs milliers d… …   Wikipédia en Français

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