'Marl' definitions:
Definition of 'marl'
From: WordNet
noun
A loose and crumbling earthy deposit consisting mainly of calcite or dolomite; used as a fertilizer for soils deficient in lime
Definition of 'Marl'
From: GCIDE
Definition of 'Marl'
From: GCIDE
- 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]
Definition of 'Marl'
From: GCIDE
- 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 terrae Galli et Britanni margam vocant." [root]274.] A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very variable proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand. [1913 Webster]
Definition of 'marl'
From: GCIDE
- Greensand \Green"sand`\ (-s[a^]nd`), n. (Geol.) A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime. [1913 Webster]
- Note: [hand]Greensand is often called marl, because it is a useful fertilizer. The greensand beds of the American Cretaceous belong mostly to the Upper Cretaceous. [1913 Webster]