Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of greensand is as below...

Marl :: Marl (n.) A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand..

Neocomian :: Neocomian (n.) A term applied to the lowest deposits of the Cretaceous or chalk formation of Europe, being the lower greensand..

Greensand :: Greensand (n.) 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..

Firestone :: Firestone (n.) A stone which will bear the heat of a furnace without injury; -- especially applied to the sandstone at the top of the upper greensand in the south of England, used for lining kilns and furnaces..

Gault :: Gault (n.) A series of beds of clay and marl in the South of England, between the upper and lower greensand of the Cretaceous period..

Glauconite :: Glauconite (n.) The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.

Neocomian :: Neocomian (a.) Of or pertaining to the lower greensand.

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