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): | Estuarine Limestones [Obsolete Name and Code: Use WBRO]
(-4388)
Wellingborough Member [Obsolete Name and Code: Use WBRO] (-4389) Upper Estuarine Limestones [Obsolete Name and Code: Use WBRO] (-4962) Upper Estuarine Limestone [Obsolete Name And Code: Use WBRO] (UEL) |
||
| 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 (University of Oxford: Unpublished PhD thesis.)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 | |||