The BGS Lexicon of Named Rock Units — Result Details
Embsay Limestone Member
Computer Code: | EML | Preferred Map Code: | notEntered |
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Status Code: | Full | ||
Age range: | Chadian Substage (CI) — Arundian Substage (CJ) | ||
Lithological Description: | Pale packstones and grainstone, frequently pellety or oolitic and locally cherty, interbedded with dark, calcareous, silty mudstones, calcisiltites, conglomerates and breccias. | ||
Definition of Lower Boundary: | Drawn at base of boulder beds of the Embsay Limestone Member where it rests unconformably on mudstones. ('Halton Shales with Limestone' of Hudson and Mitchell, 1937). | ||
Definition of Upper Boundary: | Drawn at conformable upward passage from limestone of the Embsay Limestone Member to shaly calcisiltites and mudstones. ('Skibeden Shales with Limestone' of Hudson and Mitchell, 1937). | ||
Thickness: | Up to 100 metres. | ||
Geographical Limits: | Craven Basin, north-west England. (Lothersdale and Skipton Anticlines). | ||
Parent Unit: | Hodder Mudstone Formation (HOM) | ||
Previous Name(s): | Main Limestone
(ML)
Embsay Limestone [Obsolete Name and Code: Use EML] (-3386) Main Limestone (ML) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Embsay Beck, Embsay, near Skipton, north Yorkshire. | ||
Reference Section | Large quarry exposure at Ray Gill Delf, near Skipton, north Yorkshire, England. | ||
Reference Section | Large quarry exposure at Dowshaw Delf, near Skipton, north Yorkshire, England. | ||
Reference(s): | |||
Hudson, R G S and Mitchell, G H, 1937. The Carboniferous geology of the Skipton Anticline. Geological Survey of Great Britain, Summary of Progress for 1935, part 2, p.1-45. | |||
Earp, J R, Magraw, D, Poole, E G, Land, D H and Whiteman, A J, 1961. Geology of the country around Clitheroe and Nelson. Memoir of the Geological Survey of Great Britain, Sheet.68, England and Wales, pp.346. | |||
Metcalfe, I, 1981. Conodont zonation and correlation of the Dinantian and early Namurian strata of the Craven Lowlands of Northern England. Institute of Geological Sciences, Report No. 80/10, p.1-70. | |||
Fewtrell, M D and Smith, D G, 1980. Revision of the Dinantian stratigraphy of the Craven Basin, N. England. Geological Magazine, Vol.117, p.37-49. | |||
Bray, A. 1927. The Carboniferous sequence between Lothersdale and Cowling (Colne). Journal of the Manchester Geological Association, Vol.1, 44-57. | |||
Riley N J. 1990. Stratigraphy of the Worston Shale Group (Dinantian) Craven Basin, north-west England. Proceedings of the Yorkshire Geological Society, Vol. 48, 163-187. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E069 |