The BGS Lexicon of Named Rock Units — Result Details

Kirton Cementstone Beds

Computer Code: KCM Preferred Map Code: notEntered
Status Code: Index Level
Age range: Bajocian Age (JB) — Bajocian Age (JB)
Lithological Description: Silicate- and calcareous mudstone, interbedded with thin and more or less argillaceous limestones (calcilutite and shelly and peloidal wackestone). Locally includes coralliferous limestone bodies (knoll reef).
Definition of Lower Boundary: Conformable contact between the underlying less argillaceous limestone (peloidal or ooidal wackestones and packstones - Santon Oolite) and calcareous siltstone (Raventhorpe Beds) succession, generally lacking mudstone interbeds, overlain by interbedded calcareous mudstone and argillaceous limestone of the Kirton Cementstone Beds.
Definition of Upper Boundary: Disconformable, commonly channelled contact between interbedded calcareous mudstone and argillaceous limestone of the Kirton Cementstone and high energy ooidal limestones of the overlying Upper Lincolnshire Limestone Member [Hibaldstow Limestone/Cave Oolite]. Near its northern limit only, disconformable contact with ferruginous sandy calcareous sediments of the Hunstanton Formation (Cretaceous).
Thickness: 0 to c.9.5m
Geographical Limits: BGS 1:50 000 sheets 72, 80, 89, 102 and possibly 114. Lincoln area to Market Weighton.
Parent Unit: Lower Lincolnshire Limestone Member (LLL)
Previous Name(s): Kirton Cementstones Member Plus Kirton Shale Member (-3491)
Kirton Cementstones Member (-2872)
Kirton Cementstones And Kirton [Cement] Shale (-989)
Kirton Beds (Part) (-988)
Kirkton Cementstones Member Plus Kirton Cement Shale (-4114)
Kirton Cementstones (-339)
Alternative Name(s): none recorded or not applicable
Type Area  Kirton in Lindsey, North Lincolnshire. 
Reference Section  Manton Stone Quarry, 3.8km north of Kirton in Lindsey, North Lincolnshire. Lower 5.6m of beds exposed, (including Scawby Limestone). Ashton, 1975; Cox and Sumbler, 2002, p.302 
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. 
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. 
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. 
Ussher W A E, Fox-Strangways, C, Cameron, A C G, Reid, C and Jukes-Browne, A J. 1890. The Geology of parts of Lincolnshire and South Yorkshire. Memoir of the Geological Survey of Great Britain, Old series Sheet 86. (England and Wales). 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E072 E080 E089