Coralline Oolite Formation
| Coralline Oolite Formation | |
|---|---|
| Stratigraphic range: Oxfordian ~ | |
| Type | Formation |
| Unit of | Corallian Group |
| Sub-units | Coral Rag, Yedmandale, Hambleton Oolite, Malton Oolite, Birdsall Calcareous Grit, Middle Calcareous Grit & Hildenley Limestone Members |
| Underlies | Upper Calcareous Grit, Ampthill Clay & Hunstanton Formations |
| Overlies | Lower Calcareous Grit Formation & Oxford Clay |
| Thickness | 36–60 m (118–197 ft) |
| Lithology | |
| Primary | Limestone |
| Other | Sandstone |
| Location | |
| Region | North Yorkshire |
| Country |  England |
| Extent | Cleveland Basin |
| Type section | |
| Location | Filey Brigg, Filey |
The Coralline Oolite Formation is a limestone formation of Oxfordian (Upper Jurassic) age, found in the Cleveland Basin of North Yorkshire, England.[1]
Coral Rag Member
[edit]
The rock forms some of the hills around Oxford and was once used as building stone. Coral rag can be seen in some of the oldest buildings in that city, including the Saxon tower of St Michael at the Northgate, St George's Tower of Oxford Castle and the mediaeval walls of the city.[2]
Hambleton Oolite Member
[edit]This ooidal limestone lies above either the Yedmandale Member or the Lower Calcareous Grit Formation. It is overlain by either the Middle Calcareous Grit or Malton Oolite Members. It is distinguished from the latter by its smaller grain-size and poorer sorting.[3]
Vertebrate paleofauna
[edit]Dinosaurs
[edit]The following dinosaurs were reported from the formation, with many of them reidentified.[4]
| Taxa | Location | Description | Images |
|---|---|---|---|
| Berkshire, England[4] | ||
Metriacanthosaurus
| misidentified | Actually from the Weymouth Member.[5] | |
Sauropoda[4]
| Oxfordshire, England[4] | "(=Cetiosaurus sp.)"[4] | |
Stegosauridae[4]
| North Yorkshire, England.[4] | "(=Omosaurus phillipsi)"[4] "Juvenile femur."[6] | |
| Theropoda[4] | North Yorkshire & Oxfordshire, England[4] | "(=Megalosaurus bucklandii)"[4]
|
References
[edit]- ^ British Geological Survey. "Coralline Oolite Formation". BGS Lexicon of Named Rock Units.
- ^ "Strategic Stone Study: A Building Stone Atlas of Oxfordshire". English Heritage. March 2011. Retrieved 23 April 2015.
- ^ British Geological Survey. "Hambleton Oolite Member". BGS Lexicon of Named Rock Units. Retrieved 4 November 2018.
- ^ a b c d e f g h i j k l m n o p q r s t Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 545–549. ISBN 0-520-24209-2.
- ^ Benson, R.B.J. & Barrett, P. (2009). "Dinosaurs of Dorset: Part 1. The carnivorous dinosaurs (Saurischia;Theropoda)". Proceedings of the Dorset Natural History and Archaeological Society. 130: 133–147.
- ^ "Table 16.1," in Weishampel, et al. (2004). Page 345.