The BGS Lexicon of Named Rock Units — Result Details
Clackmannan Lower Five-Foot Coal (Clackmannan)
Computer Code: | CLLF | Preferred Map Code: | notEntered |
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Status Code: | Index Level | ||
Age range: | Langsettian Substage (CA) — Langsettian Substage (CA) | ||
Lithological Description: | Thickness=up to 1.5m in two leavesUsed on maps: equivalent coal the Alloa Cherry shown on Sheet 39E solid, Alloa, 1974 edition based on resurvey 1950-61 by M. Armstrong, A.C. Bishop, E.H. Francis and W.A. Read | ||
Definition of Lower Boundary: | Normally fireclay underlying the lower boundary, with presumably a conformable contacts. | ||
Definition of Upper Boundary: | Mudstone above, also probably conformable. In the western part of the area the overlying unit can be an erosionally based sandstone. | ||
Thickness: | Up to 1.5 m thick, in two leaves. | ||
Geographical Limits: | Main Clackmannan Coalfield, Stirling, Alloa, Midland Valley of Scotland. | ||
Parent Unit: | Scottish Lower Coal Measures Formation (LCMS) | ||
Previous Name(s): | none recorded or not applicable | ||
Alternative Name(s): | Alloa Cherry Coal Little Splint Coal |
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Stratotypes: | |||
none recorded or not applicable | |||
Reference(s): | |||
Francis, E H, Forsyth, I H, Read, W A and Armstrong, M. 1970. The geology of the Stirling district. Memoir of the Geological Survey of Great Britain, Sheet 39 (Scotland). | |||
Dinham C H and Haldane D. 1932. The Economic Geology of the Stirling and Clackmannan Coalfield. Memoirs of the Geological Survey, Scotland. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S039 |