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Chert   /tʃərt/   Listen
Chert

noun
1.
Variety of silica containing microcrystalline quartz.



Related search:
cherty


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"Chert" Quotes from Famous Books



... most romantic districts in the whole of England is the Undercliff, extending for five miles from Ventnor to Blackgang Chine. Its beauty has been caused by the slipping away of the Gault clay, letting down the masses of Upper Greensand rock. The chert beds of the cliff have been weathered out by wind and rain into forms of rugged beauty, while the broken and undulating ground below is filled with flowers and vegetation of the most wonderful and varied character, scattered rocks peeping out ...
— Pictures in Colour of the Isle of Wight • Various
... proof of this—at least I should have in every gravel-pit at Eversley—in a few pieces of a stone which is not chalk-flint at all; flattish and oblong, not more than two or three inches in diameter; of a grayish colour, and a porous worm-eaten surface, which no chalk-flint ever has. They are chert, which abound in the greensand formation; and insignificant as they look, are a great token of a most important fact; that the currents which formed our sands and gravels set from the south during a long series of ages, first till they ...
— Scientific Essays and Lectures • Charles Kingsley


Words linked to "Chert" :   taconite, silicon dioxide, cherty, silica, silicon oxide


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