The Coralline Oolite Formation is a
limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...
formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondar ...
of
Oxfordian (
Upper Jurassic) age, found in the
Cleveland Basin
The Cleveland Basin is a sedimentary basin in Yorkshire, England. Formed initially by rifting during the Mississippian period of the Early Carboniferous. It is West–East trending and lies between the intrabasinal highs of the Askrigg Block and t ...
of
North Yorkshire
North Yorkshire is the largest ceremonial counties of England, ceremonial county (lieutenancy area) in England, covering an area of . Around 40% of the county is covered by National parks of the United Kingdom, national parks, including most of ...
, England.
Coral Rag Member
![Cornmarket StMichael](https://upload.wikimedia.org/wikipedia/commons/c/c5/Cornmarket_StMichael.jpg)
The rock forms some of the hills around
Oxford
Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the ...
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.
Hambleton Oolite Member
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.
Vertebrate paleofauna
Dinosaurs
The following dinosaurs were reported from the formation, with many of them reidentified.
[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. .]
References
{{Reflist
Geologic formations of England
Jurassic System of Europe
Jurassic England
Limestone formations
Shallow marine deposits
Paleontology in England
Oxfordian Stage