The BGS Lexicon of Named Rock Units — Result Details

Wellingborough Limestone Member

Computer Code: WBRO Preferred Map Code: We
Status Code: Full
Age range: Bathonian Age (JN) — Bathonian Age (JN)
Lithological Description: A massive argillaceous, sandy, shelly and shell-detrital limestone associated with rubbly oyster-rich limestone and marl and mudstones, passing northwards into sandstone.
Definition of Lower Boundary: Limestone or sandstone overlying marine mudstone or siltstone of the Rutland Formation,undifferentiated, forming the lower part of the Wellingborough Rhythm of Bradshaw (1978).
Definition of Upper Boundary: The top of the limestone or sandstone overlain by rootleted siltstone or mudstone of the Rutland Formation, undifferentiated, forming the upper part of the Wellinborough Rhythm of Bradshaw,1978.
Thickness: Up to about 5 m thick, typically 3m to 4m, measured as 3.04 in type section.
Geographical Limits: The Stamford district, where the unit thins, and passes northward into sandstone as at Ketton Quarry (Cox, B M, and Sumbler, M G. 2002), passing south-westwards into the Taynton Limestone Formation in the Silverstone area.
Parent Unit: Rutland Formation (RLD)
Previous Name(s): Upper Estuarine Limestone [Obsolete Name And Code: Use WBRO] (UEL)
Estuarine Limestones (-4388)
Wellingborough Member (-4389)
Upper Estuarine Limestones (-4962)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Wellinborough-Kettering area, Northants. 
Type Section  Finedon Gullet, Wellinborough also described as Wellingborough No 5 Pit, Irthlinborough. Aslin, in Torrens,1968; Bradshaw,1978; Cox, B M, and Sumbler, M G. 2002. 
Reference Section  Irchester Old Lodge Pit, this quarry is now infilled, but a very similar section is visible in the adjoining Irchester Country Park. Bradshaw, 1978, also for additional reference sections. 
Reference(s):
Cox, B M and Sumbler, M G. 2002. British Middle Jurassic Stratigraphy. Geological Conservation Review Series No.26. [Peterborough: Joint Nature Conservation Committee.] 
Bradshaw, M J. 1978. A facies analysis of the Bathonian of eastern England. (University of Oxford: Unpublished PhD thesis.) 
Thompson, B. 1930. The Upper Estuarine Series of Northamptonshire and north Oxfordshire. Quarterly Journal of the Geological Society of London. Vol.86, p.430-462. 
Woodward, H B, and Thompson, B. 1909. The water supply of Bedfordshire and Northamptonshire from underground sources. Memoir of the Geological Survey of England and Wales. 
Torrens, H S. 1968. The Great Oolite Series. 227-263 in Sylvester-Bradley, P C and Ford, T D (editors), The geology of the East Midlands. (Leicester: Leicester University Press.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E171 E157 E158 E170 E172 E185 E186 E202 E203