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1 definition found
 for Flexible sandstone
From The Collaborative International Dictionary of English v.0.48 :

  Sandstone \Sand"stone`\, n.
     A rock made of sand more or less firmly united. Common or
     siliceous sandstone consists mainly of quartz sand.
     [1913 Webster]
     Note: Different names are applied to the various kinds of
           sandstone according to their composition; as, granitic,
           argillaceous, micaceous, etc.
           [1913 Webster]
     Flexible sandstone (Min.), the finer-grained variety of
        itacolumite, which on account of the scales of mica in the
        lamination is quite flexible.
     Red sandstone, a name given to two extensive series of
        British rocks in which red sandstones predominate, one
        below, and the other above, the coal measures. These were
        formerly known as the Old and the New Red Sandstone
        respectively, and the former name is still retained for
        the group preceding the Coal and referred to the Devonian
        age, but the term New Red Sandstone is now little used,
        some of the strata being regarded as Permian and the
        remained as Triassic. See the Chart of Geology.
        [1913 Webster]

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