marl

marl
   A generic term loosely applied to a variety of materials, most of which occur as an earthy, unconsolidated deposit consisting chiefly of an intimate mixture of clay and calcium carbonate formed commonly by the chemical action of algae mats and organic detritus (periphyton); specifically an earthy substance containing 35 to 65 % clay and 65 to 35 % calcium carbonate mud; formed primarily under freshwater lacustrine conditions, but varieties associated with more saline environments and higher carbonate contents also occur.
   Compare: coastal marl, freshwater marl.
   SW & HP

Glossary of landform and geologic terms. 2013.

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Look at other dictionaries:

  • Marl — Marl …   Wikipédia en Français

  • Marl — Marl, v. t. [imp. & p. p. {Marled}; p. pr. & vb. n. {Marling}.] [Cf. F. marner. See {Marl}, n.] To overspread or manure with marl; as, to marl a field. [1913 Webster] …   The Collaborative International Dictionary of English

  • marl — marl1 [märl] n. [ME < OFr marle < ML margila (> Ger mergel), dim. of L marga, marl < Gaul] 1. a mixture of clay, sand, and limestone in varying proportions, that is soft and crumbly and usually contains shell fragments 2. any loose,… …   English World dictionary

  • marl — marl·berry; marl·bor·ough; marl·ite; marl; …   English syllables

  • marl|y — «MAHR lee», adjective, marl|i|er, marl|i|est. of, like, or full of marl …   Useful english dictionary

  • Marl — Marl, n. [OF. marle, F. marne, LL. margila, dim. of L. marga marl. Originally a Celtic word, according to Pliny, xvii. 7: Quod genus terr[ae] Galli et Britanni margam vocant. [root]274.] A mixed earthy substance, consisting of carbonate of lime,… …   The Collaborative International Dictionary of English

  • Marl — Marl, v. t. [See {Marline}.] (Naut.) To cover, as part of a rope, with marline, marking a pecular hitch at each turn to prevent unwinding. [1913 Webster] {Marling spike}. (Naut.) See under {Marline}. [1913 Webster] …   The Collaborative International Dictionary of English

  • marl — [ma:l US ma:rl] n [U] 1.) soil consisting of ↑lime and ↑clay 2.) cloth which has pale threads running through another colour ▪ a jacket available in black or grey marl …   Dictionary of contemporary English

  • marl — clayey soil used for fertilizer, late 14c., from O.Fr. marle (Mod.Fr. marne), from L.L. marglia, dim. of L. marga marl, which is said by Pliny to be a Gaulish word, but modern Celtic cognates are considered to be borrowed from English or French.… …   Etymology dictionary

  • marl — Ⅰ. marl [1] ► NOUN ▪ an unconsolidated sedimentary rock or soil consisting of clay and lime, formerly used as fertilizer. ORIGIN Old French marle, from Latin marga, of Celtic origin. Ⅱ. marl [2] ► NOUN ▪ a mottled yarn or fabric …   English terms dictionary

  • Marl — Marl, so v.w. Mergel …   Pierer's Universal-Lexikon

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