Cornbrash Formation
| Cornbrash Formation | |
|---|---|
Ma | |
 Cornbrash Formation at Shorncote Quarry in Gloucestershire | |
| Type | Geological formation |
| Unit of | Great Oolite Group |
| Underlies | Kellaways Formation, Cayton Clay Formation |
| Overlies | Forest Marble Formation, Blisworth Clay Formation, Scalby Formation |
| Thickness | 0-10.5 m |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | England |
| Country |  UK |
| Extent | Dorset coast to Yorkshire coast |
The Cornbrash Formation is a
Cayton Bay, Wheatcroft, Newton Dale and Langdale. In the inland exposures in Yorkshire it is difficult to follow on account of its thinness, and the fact that it passes up into dark shales in many places the so-called clays of the Cornbrash, with Avicula echinata. The Cornbrash is of little value for building or road-making, although it is used locally; in the south of England it is not oolitic, but in Yorkshire it is a rubbly, marly, frequently ironshot oolitic limestone. In Bedfordshire it has been termed the Bedford limestone.[3]
Fossils
The Cornbrash is a very
Eoplophysis") have been discovered in this formation. The teleosaurid crocodyliformes Yvridiosuchus, Seldsienean, Clovesuurdameredeor and Deslongchampsina are known from the formation.[4]
See also
- List of dinosaur-bearing rock formations
Footnotes
- ^ "Cornbrash Formation". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved 27 June 2016.
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ a b Chisholm 1911.
- hdl:1842/36656.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Cornbrash". Encyclopædia Britannica. Vol. 7 (11th ed.). Cambridge University Press. p. 163.
