frost boil of soil

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• Frost boil — Mud boils near Lapporten, Sweden Frost boils (also known as mud boils, frost scars and mud circles [1]) are upwellings of mud that occur through frost heave and cryoturbation in permafrost areas, such as arctic and alpine regions. They are… …   Wikipedia

• frost boil —    A small mound of fresh soil material formed by frost action. A type of nonsorted circle commonly found in fine grained sediment underlain by permafrost, or formed in areas affected by seasonal frost.    Compare: patterned ground.    NRC …   Glossary of landform and geologic terms

• microfeature —    [ soil survey ]    Small, local, natural forms (features) on the land surface that are too small to delineate on a topographic or soils map at commonly used map scales (e.g., 1:24,000 to 1:10,000). Examples include earth pillar, patterned… …   Glossary of landform and geologic terms

• 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

• Cryoturbation — Asphalt damaged by cryoturbation, or freezing of groundwater In gelisols (permafrost soils), cryoturbation (frost churning) refers to the mixing of materials from various horizons of the soil right down to the bedrock due to freezing and thawing …   Wikipedia

• Permafrost — This article is about frozen ground. For other uses, see Permafrost (disambiguation). In geology, permafrost, cryotic soil or permafrost soil is soil at or below the freezing point of water (0 °C or 32 °F) for two or more years. Ice is not always …   Wikipedia

• Cryosuction — is the process in freezing soils whereby water migrates through soil pores to the freezing zone (through capillary action).[1] [2] In periglacial environments, this mechanism is highly significant. It is the predominant process in ice lens… …   Wikipedia

• Talik — For the Israeli general named Talik, see Israel Tal. A talik (from the Russian Language talik, derived from the verb tait, to melt) is a layer of year round unfrozen ground that lies in permafrost areas. In regions of continuous permafrost,… …   Wikipedia

• Heliciculture — (snail farming) is the process of farming or raising snails.HistoryRoasted snail shells have been found in archaeological excavations, an indication that snails have been eaten since prehistoric times [ [http://watarts.uwaterloo.ca/… …   Wikipedia

• Merry Gentry — For other people of the same name, see Meredith Gentry (disambiguation). Merry Gentry is the title character of fantasy series by US writer Laurell K. Hamilton, best known for her previous series Anita Blake: Vampire Hunter. Since 2000, she has… …   Wikipedia

• Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… …   Universalium