mudstone


mudstone
/mud"stohn'/, n. Geol.
a clayey rock with the texture and composition of shale but little or no lamination.
[1730-40; MUD + STONE]

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rock
      sedimentary rock composed primarily of clay- or silt-sized particles (less than 0.063 mm [0.0025 inch] in diameter); it is not laminated or easily split into thin layers. Some geologists designate as mudstone any similar rock that is blocky or massive; others, however, prefer a broader definition that includes all of the members of the shale group. See also siltstone.

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Universalium. 2010.

Look at other dictionaries:

  • Mudstone — formation on Lyme Regis East Beach. Mudstone (also called mudrock) is a fine grained sedimentary rock whose original constituents were clays or muds. Grain size is up to 0.0625 mm (0.0025 in) with individual grains too small to be… …   Wikipedia

  • Mudstone — photographiée dans les environs de Lyme Regis. La mudstone est une fine roche sédimentaire composée à l origine d argile ou de boue. La granulométrie est si petite qu elle ne peut être distinguée sans microscope. Le terme est d origine… …   Wikipédia en Français

  • mudstone — [mud′stōn΄] n. a fine grained sedimentary rock that is formed from silt and clay, similar to shale but not distinctly laminated …   English World dictionary

  • mudstone — noun Date: circa 1736 an indurated shale produced by the consolidation of mud …   New Collegiate Dictionary

  • mudstone — noun A fine grained sedimentary rock whose original constituents were clays or muds …   Wiktionary

  • mudstone —     a) A blocky or massive, fine grained sedimentary rock in which the proportions of clay and silt are approximately equal.     b) A general term that includes clay, silt, claystone, siltstone, shale, and argillite, and that should be used only… …   Glossary of landform and geologic terms

  • mudstone — n. type of shale (Geology) …   English contemporary dictionary

  • mudstone — noun a dark sedimentary rock formed from consolidated mud and lacking the laminations of shale …   English new terms dictionary

  • mudstone — mud•stone [[t]ˈmʌdˌstoʊn[/t]] n. gel a clayey rock with the texture and composition of shale but little or no lamination • Etymology: 1730–40 …   From formal English to slang

  • mudstone — /ˈmʌdstoʊn/ (say mudstohn) noun a clayey rock of nearly uniform texture throughout, with little or no lamination …   Australian English dictionary


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