The BGS Lexicon of Named Rock Units — Result Details

Great Oolite Group
Computer Code: GOG Preferred Map Code: GtO
Status Code: Full
Age range: Bathonian Age (JN) — Bathonian Age (JN)
Lithological Description: Calcareous (rarely oolitic) and argillaceous formations.
Definition of Lower Boundary: Unconformity at top of Inferior Oolite Group.
Definition of Upper Boundary: Junction with basal clays of Ancholme Group (base of Kellaways Clay, over much of area of occurrence).
Thickness: c.23m in Grantham area.
Geographical Limits: Dorset, Somerset, through the south-west Midlands, Oxon, Northants, part of Lincolnshire and northwards as far as the Market Weighton High (covering areas formerly including the outcrop of the now obsolete "Redbourne Group"), Hebrides, East Scotland: Also proved in borings in Kent, the London area and Norfolk.
Parent Unit: Not Applicable (-)
Previous Name(s): Great Oolite Formation (-765)
Redbourne Group [Obsolete Name And Code: Use INO And GOG] (RDBN)
Great Oolite Limestone [Obsolete Name And Code: Use BWL, GOG Or CFDO] (GOL)
Redbourne Group (-1569)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Bath area. 
Reference(s):
Gaunt, G D, Fletcher, T P amd 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). 
Cope, J C W and others, 1980. A correlation of Jurassic Rocks in the British Isles. Geological Society of London, Special Report, No.15. 
Woodward, H B. 1894. The Jurassic Rocks of Britain, Vol.4. The Lower Oolitic Rocks of England (Yorkshire Excepted). Memoir of the Geological Survey of Great Britain. 
Arkell, W J. 1933. The Jurassic System in Great Britain. [Oxford: Clarendon Press.] 
Arkell, W J. 1947. The Geology of Oxford. [Oxford: Clarendon Press.] 
Cox, L R and Arkell, W J, 1948. A Survey of the Mollusca of the British Great Oolite Series. Monograph of the Palaeontographical Society. 
Judd, J W. 1875. Rutland. Memoir of the Geological Survey of Great Britain, Vol.186. 
Fox-Strangeways, C. 1892. The Jurassic Rocks of Britain, Vol.1. Yorkshire. Memoir of the Geological Survey of the United Kingdom. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E081 E127 E144 E157 E159 E170 E171 E203 E172 E185 E186 E187 E201 E202 E218 E235 E236 E237 E251 E252 E253 E265 E219 E268 E273 E281 E341 E342 E343 E217
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