greensand

Definitions

  • WordNet 3.6
    • n greensand an olive-green sandstone containing glauconite
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Webster's Revised Unabridged Dictionary
    • n Greensand (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.Greensand is often called marl, because it is a useful fertilizer. The greensand beds of the American Cretaceous belong mostly to the Upper Cretaceous.
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Century Dictionary and Cyclopedia
    • n greensand A sandstone containing grains of glauconite, which impart to it a greenish hue. There are two sets of strata in England to which this name is applied; one is above the galt, the other below it. The greensand is also a formation of importance in the United States. It is extensively mined in New Jersey for fertilizing purposes, and commonly called marl. The glauconite is a silicate of iron and potash, and this mineral forms sometimes as much as 90 per cent. of the greensand, the rest being ordinary sand.
    • n greensand In geological classification, one of certain subdivisions of the Cretaceous system. In England the Lower Greensand overlies the Wealden formation and is characteristically developed on the Isle of Wight, where it includes the Atherfield clay, Hythe, Sandgate, and Folkestone beds in ascending order. The Upper Greensand is the sandy or chloritic facies of which the Galt is the clay equivalent (see galt). The Lower Greensand is generally equivalent on the Continent and elsewhere to the Aptian, the Upper Greensand to the Albian stage.
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Chambers's Twentieth Century Dictionary
    • Greensand a sandstone in which green specks of iron occur
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Etymology

Chambers's Twentieth Century Dictionary
A.S. gréne; Ger. grün, Dut. groen, green, Ice. grænn, allied to grow.

Usage

In literature:

No, that is what is called Greensand.
"Madam How and Lady Why or, First Lessons in Earth Lore for Children" by Charles Kingsley
Will you some time have to examine the Chalk and its junction with London Clay and Greensand?
"More Letters of Charles Darwin" by Charles Darwin
This is called commonly the lower Greensand, though it is not green, but rich iron-red.
"Town Geology" by Charles Kingsley
Lower Greensand or Neocomian, / 3.
"The Ancient Life History of the Earth" by Henry Alleyne Nicholson
The coprolites lay undisturbed in countless numbers in the lias, the greensand, and the Suffolk crag.
"Talks on Manures" by Joseph Harris
Freshwater Purbeck beds lie below the Portland and Lower Greensand beds; they cap the ridge between Oving and Whitchurch.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various
One of the ferns is a tree-fern with thick stems, which has also been found in the Upper Greensand of England.
"Island Life" by Alfred Russel Wallace
For further information see the articles CHALK; GREENSAND; WEALDEN.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6" by Various
You probably wonder why these red cliffs are called Greensand.
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
It consists of a dark blue marl, sometimes intermixed with greensand.
"A Manual of Elementary Geology" by Charles Lyell
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