What is the meaning of ROCKS. Phrases containing ROCKS
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ROCKS
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ROCKS
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ROCKS
ROCKS
A subdivision in the lower Silurian system of America; -- so named from Trenton Falls, in New York. The rocks are mostly limestones, and the period is divided into the Trenton, Utica, and Cincinnati epochs. See the Chart of Geology.
ROCKS
n.
Any species of annelids of the genus Sabellaria. They construct firm tubes of agglutinated sand on rocks and shells, and are sometimes destructive to oysters.
a.
Consisting of, or resembling, glass; glassy; as, vitreous rocks.
n.
Pure silica, like quartz, but crystallizing in hexagonal tables. It is found in trachyte and similar rocks.
n.
A variety of orthoclase feldspar common in certain eruptive rocks, as trachyte; -- called also glassy feldspar.
n.
An old term rather loosely used to designate various dark-colored, heavy igneous rocks, including especially the feldspathic-augitic rocks, basalt, dolerite, amygdaloid, etc., but including also some kinds of diorite. Called also trap rock.
a.
Not stratified; -- applied to massive rocks, as granite, porphyry, etc., and also to deposits of loose material, as the glacial till, which occur in masses without layers or strata.
n.
Amphibole resulting from the alternation of pyroxene by paramorphism. It is not uncommon in massive eruptive rocks.
n.
A small cavity, nearly spherical in form, and usually of the size of a pea or smaller, such as are common in some volcanic rocks. They are produced by the liberation of watery vapor in the molten mass.
n.
A genus of pearly bivalve shells, numerous extinct species of which are characteristic of the Mesozoic rocks. A few living species exist on the coast of Australia.
a.
Growing on rocks.
n.
Any plant of the genus Saxifraga, mostly perennial herbs growing in crevices of rocks in mountainous regions.
n.
A narrow mass of rock intersecting other rocks, and filling inclined or vertical fissures not corresponding with the stratification; a lode; a dike; -- often limited, in the language of miners, to a mineral vein or lode, that is, to a vein which contains useful minerals or ores.
n.
One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; a vulcanist. Cf. Neptunist.
n.
A greenish chloritic mineral common in certain igneous rocks, as diabase, as a result of alternation.
a.
Of or pertaining to rocks; living among rocks; as, a saxatile plant.
n.
Any species of marine bivalve shells of the genus Saxicava. Some of the species are noted for their power of boring holes in limestone and similar rocks.
a.
Boring, or hollowing out, rocks; -- said of certain mollusks which live in holes which they burrow in rocks. See Illust. of Lithodomus.
a.
Of, pertaining to or containing, trilobites; as, trilobitic rocks.
n.
Something varying or differing from others of the same general kind; one of a number of things that are akin; a sort; as, varieties of wood, land, rocks, etc.
ROCKS
ROCKS