The BGS Lexicon of Named Rock Units — Result Details

Santon Oolite

Computer Code: SNO Preferred Map Code: SnO
Status Code: Index Level
Age range: Bajocian Age (JB) — Bajocian Age (JB)
Lithological Description: Limestone: peloidal and ooidal packstones, with some grainstones and locally interbeds of wackestone and lime-mudstone.
Definition of Lower Boundary: Conformable or mildly disconformable contact between underlying silty limestone, calcareous siltstone and mudstone (of the Raventhorpe Beds sensu Gaunt et al., 1992), and peloidal and ooidal limestones of the Santon Oolite.
Definition of Upper Boundary: Conformable, contact between peloidal and ooidal limestones of the Santon Oolite and the argillaceous and mudstone-rich succession of the overlying Kirton Cementstone.
Thickness: 0 to c.2m
Geographical Limits: BGS 1:50 000 sheets 80, 89 and possibly 102; North Lincolnshire, ?from the Hibaldstow area to the Humber.
Parent Unit: Lower Lincolnshire Limestone Member (LLL)
Previous Name(s): Santon Oolite Member (-795)
Santon Oolite Member - Upper Leaf Only (-4335)
Raventhorpe Beds (RVB)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Santon, near Scunthorpe, North Lincolnshire. 
Reference Section  Manton Stone Quarry, 3.8km north of Kirton in Lindsey, North Lincolnshire. Formerly fully exposed: up to 2m of beds. Cox and Sumbler, 2002, p.302. Ashton, 1975. 
Reference(s):
Gaunt, G D, Fletcher, T P and Wood, C J. 1992. Geology of the country around Kingston upon Hull and Brigg. Memoir of the British Geological Survey, sheets 80 and 89 (England and Wales). 172pp. 
Ashton, M 1980. The stratigraphy of the Lincolnshire Limestone Formation (Bajocian) in Lincolnshire and Rutland (Leicestershire). Proceedings of the Geologists' Association, Vol.91, 203-224. 
Ashton, M. 1975. A new section in the Lincolnshire Limestone of South Humberside and its significance. Proceedings of the Yorkshire Geological Society, Vol.40, 419-429. 
Cox, B M and Sumbler, M G. 2002. British Middle Jurassic Stratigraphy. Geological Conservation Review Series No.26. [Peterborough: Joint Nature Conservation Committee.] 
Kent, P E. 1966. A review of the correlation of the Lincolnshire Limestone (Inferior Oolite). Transactions of the Leicester Literary and Philosophical Society, Vol.60, 57-69. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E080 E089