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

Coral Rag as building stone: the Saxon tower of St Michael at the Northgate, Oxford

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

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

References