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chemical weathering

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  • chemical weathering —   a weathering process in which the resultant material is chemically different to the original rock. Usually carried out by dilute acids. Rates will therefore increase with the increased presence of water and increased temperature except for… …   Geography glossary

  • chemical weathering — /kɛmɪkəl ˈwɛθərɪŋ/ (say kemikuhl wedhuhring) noun the process leading to the decomposition of solid rocks by means of chemical reactions, as by carbonation, hydrolysis, oxidation, reduction or solution …  

  • chemical weathering — …   Useful english dictionary

  • Weathering — This article is about weathering of rocks and minerals. For weathering of polymers, see Polymer degradation and Weather testing of polymers. Weathering is the breaking down of rocks, soils and minerals as well as artificial materials through… …   Wikipedia

  • weathering — /wedh euhr ing/, n. 1. Archit. wash (def. 48). 2. material used as a weather strip. 3. Geol. the various mechanical and chemical processes that cause exposed rock to decompose. [1655 65; WEATHER + ING1] * * * Physical disintegration and chemical… …   Universalium

  • weathering —   breakdown of rock in situ by physical and chemical processes due to the presence of water, plants and animals. Rates vary according to additional controls of temperature, rock type and time. (see physical weathering and chemical weathering) …   Geography glossary

  • weathering — [weth′əriŋ] n. 1. Archit. a slope built to shed water 2. Geol. the destructive physical and chemical effects of the forces of weather on rock surfaces, as in forming soil or sand …   English World dictionary

  • chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

  • Weathering steel — Corten redirects here. For the commune in Moldova, see Corten, Taraclia. Iron alloy phases Ferrite (α iron, δ iron) …   Wikipedia

  • Chemical process of decomposition — Human body composition Decomposition is a process that begins immediately after death and involves the destruction of soft tissue, leaving behind skeletonized remains. The chemical process of decomposition is complex and involves the breakdown of …   Wikipedia

  • weathering — The change in appearance of paint caused by exposure to the elements. The physical disintegration and chemical decomposition of materials on exposure to atmospheric agents. Also see natural weathering …   Dictionary of automotive terms

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