Flexible sandstone


Also found in: Encyclopedia.
(Min.) the finer-grained variety of itacolumite, which on account of the scales of mica in the lamination is quite flexible.

See also: Sandstone

References in periodicals archive ?
Over 21 metres high and built on a foundation of flexible sandstone, the intricately crafted structure of the twin towers was such that if you shook one, its twin shook in sympathy.
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