marlstone

Definitions

  • WordNet 3.6
    • n marlstone metamorphic rock with approximately the same composition as marl
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Webster's Revised Unabridged Dictionary
    • n Marlstone (Geol) A sandy calcareous straum, containing, or impregnated with, iron, and lying between the upper and lower Lias of England.
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Century Dictionary and Cyclopedia
    • n marlstone In geology, argillaceous and more or less ferruginous limestone. The middle of the three principal divisions of the Lias in England is called the Marlstone, a name first used by W. Smith. This is economically a highly important rock, since it contains the celebrated deposits of iron ore called the Cleveland, from the Cleveland hills, in which it occurs. The Middle Lias or Marlstone consists generally of two members, the upper one being the Marlstone proper, and the lower a series of sands, marls, and clays. The maximum thickness of the whole series is about 300 feet.
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Chambers's Twentieth Century Dictionary
    • n Marlstone argillaceous limestone
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Etymology

Chambers's Twentieth Century Dictionary
O. Fr. marle (Fr. marne)—Low L. margila, a dim. of L. marga, marl.

Usage

In literature:

Dr Stock, of Marlstone, was at once sent for, and will conduct the post-mortem examination.
"Trent's Last Case" by E.C. (Edmund Clerihew) Bentley
Dr. Stock, of Marlstone, was at once sent for, and will conduct the post-mortem examination.
"The Woman in Black" by Edmund Clerihew Bentley
This slaty marlstone is richly impregnated with copper pyrites, for which it is extensively worked.
"A Manual of Elementary Geology" by Charles Lyell
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