What is the meaning of SHALE. Phrases containing SHALE
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SHALE
SHALE
A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock.
A subdivision or the American Upper Silurian system, embracing the Medina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology.
An epoch at the close of the American lower Silurian system. The rocks are well developed near Cincinnati, Ohio. The group includes the Hudson River and Lorraine shales of New York.
Alt. of Alum shale
SHALE
n.
A kind of laminated shale or sandstone belonging to some of the layers of the Upper Silurian.
a.
Resembling shale in structure.
n.
A shell or husk; a cod or pod.
n.
A semivitrified clay or shale, somewhat resembling jasper; -- called also porcelain jasper.
a.
Consisting of the pulverized or fragmentary material of rock, as conglomerate, shale, etc.
n.
A ferruginous variety of shalerite or zinc blende, nearly black in color.
n.
A fine-grained sedimentary rock of a thin, laminated, and often friable, structure.
n.
Shale or bituminous shale.
n.
A bed of shale over the seam.
a.
Of, pertaining to, or designating, a subdivision of the Trenton Period of the Lower Silurian, characterized in the State of New York by beds of shale.
n.
An oil used for illuminating purposes, formerly obtained from the distillation of mineral wax, bituminous shale, etc., and hence called also coal oil. It is now produced in immense quantities, chiefly by the distillation and purification of petroleum. It consists chiefly of several hydrocarbons of the methane series.
a.
Baked like potter's lay; -- applied to clay shales that have been converted by heat into a substance resembling porcelain.
v. t.
To strip the shale, or husk, from; to uncover.
v. t.
To take off the shell or coat of; to shell.
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