e/Millstone Grit

Information
has gloss	eng: Millstone Grit is the name given to any of a number of coarse-grained sandstones of Carboniferous age which occur in the north of England. The name derives from its use in earlier times as a source of millstones for use principally in watermills. Geologists refer to the whole suite of rocks which encompass both the individual sandstone beds and the intervening mudstones as the Millstone Grit Group. The term Millstone Grit Series was formerly used to refer to the rocks now included within the Millstone Grit Group together with the underlying Edale Shale Group.
lexicalization	eng: Millstone grit
instance of	(noun) rock formed from consolidated clay sediments sedimentary rock

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