Century Dictionary and Cyclopedia
- n. In geology, the local name of a subdivision of the Jurassic series, belonging in the upper portion of the so-called Great Oölite of the English geologists. The formation consists of clays and calcareous sandstones, and is very persistent, retaining its lithological and paleontological character from the southwest of England nearly as far as the Humber.
- A local name for a soil that was good for growing corn (wheat). (Wiktionary)
“Whether they are to be entirely depended upon is questionable, but we may here repeat them: — Gravel and boulder clay, 10 feet; Kimeridge and Oxford clays, 350; Kellaways rock, blue clays, cornbrash, limestone, great oolite, clay and limestone, upper”
“Lower oolitic formation, including, besides the great oolite bed of central England, fullers 'earth beds, forest marble, and cornbrash;”
“These are said to have been gravel and boulder clay, Kimmeridge and Oxford clays, Kelloway’s rock, blue clay, cornbrash, limestone, great oolite, clay and limestone, upper Estuarine clay,”
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