Definition of cornstone in English:

cornstone

noun ˈkɔːnstəʊn

mass nounGeology

词汇	cornstone
释义	Definition of cornstone in English: cornstone noun ˈkɔːnstəʊn mass nounGeology A mottled red and green limestone characteristic of the Old and the New Red Sandstone in Britain. 〔地质〕玉米灰岩 Example sentencesExamples These cornstones are only exposed at low water, and occupy a position some 15 ft. or 20 ft. above the Parnell grit. The landscape is punctuated by hills which are often topped with a thin band of limestone known locally as cornstone. It may be noted that the building at the top is an old lime kiln where they used to burn the cornstone to get lime for their fields. The soil is loam and the subsoil Old Red Sandstone, interstratified with cornstone at Pippin's Hill in the north. The Bishops Frome Limestone and cornstones of the St Maughans Formation also have been used for this purpose.
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