The BGS Lexicon of Named Rock Units — Result Details

Ellerker Limestone

Computer Code: ELL Preferred Map Code: notEntered
Status Code: Index Level
Age range: Bajocian Age (JB) — Bajocian Age (JB)
Lithological Description: Limestone, hard, porcellanous, silty, with fine-grained shell debris (silty, shell fragmental wackestone).
Definition of Lower Boundary: Quasi-conformable contact between predominantly calcareous mudstone and siltstone of underlying part of Raventhorpe Beds and porcellanous limestone of this informal Bed.
Definition of Upper Boundary: Quasi-conformable contact between porcellanous limestone of this informal Bed and predominantly calcareous mudstone and siltstone of the overlying part of the Raventhorpe Beds.
Thickness: 0 to c.1m.
Geographical Limits: BGS 1:50 000 sheets 80, 89; northernmost Lincolnshire (the Humber area), northwards to the Market Weighton area.
Parent Unit: Lower Lincolnshire Limestone Member (LLL)
Previous Name(s): Ellerker Limestone Member (-230)
Hydraulic Limestone (-4632)
Hydraulic Limestones [Obsolete Name And Code: See SMD, BNT, ELL] (HYDL)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Section at waterfall in Ellerker Beck, Ellerker, near South Cave, East Riding of Yorkshire. ?field notes, BGS archive (designated by Gaunt et al., 1992, p.48, but no description given). 
Reference Section  BGS Cockle Pits Borehole near South Cave, East Riding of Yorkshire. SE92NW/60. 10.67 to 11.61m depth. 
Type Area  Ellerker, near South Cave, East Riding of Yorkshire. 
Reference(s):
Gaunt, G D, Ivimey-Cook, H C, Penn, I E and Cox, B M. 1980. Mesozoic rocks proved by the Institute of Geological Sciences boreholes in the Humber and Acklam areas. Report of the Institute of Geological Sciences, No. 79/13. 
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:
E080