The BGS Lexicon of Named Rock Units — Result Details
Cefn Einion Formation
| Computer Code: | CEF | Preferred Map Code: | CEF |
|---|---|---|---|
| Status Code: | Pending Upgrade | ||
| Age range: | Ludfordian Age (SD) — Ludfordian Age (SD) | ||
| Lithological Description: | Mudstone, siltstone and sandstone. | ||
| Definition of Lower Boundary: | none recorded or not applicable | ||
| Definition of Upper Boundary: | none recorded or not applicable | ||
| Thickness: | none recorded or not applicable | ||
| Geographical Limits: | none recorded or not applicable | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Llan-Wen Hill Beds [Obsolete Name And Code: See CEF]
(LWHB)
Wern Quarry Beds [Obsolete Name And Code: See CEF] (WQB) Dalmanella Lunata Beds [Obsolete Name and Code: Use CEF] (-1418) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| none recorded or not applicable | |||
| Reference(s): | |||
| Cave, R and Hains, B A. 2001. Geology of the country around Montgomery. Memoir of the British Geological Survey, Sheet 165 with part of 151 (Welshpool) (England and Wales). | |||
| Allender, R. 1959. On the stratigraphy and structure of an area of Ludlowian and Lower Downtonian near Bishops Castle, Shropshire. Unpublished Ph.D. Thesis, University of Wales. | |||
| Earp, J R, 1938. The higher Silurian rocks of the Kerry district, Montgomeryshire. Quarterly Journal of the Geological Society of London. Vol.94/1, p.125-160. | |||
| Holland, C H, 1959. The Ludlovian and Downtonian rocks of the Knighton district, Radnorshire. Quarterly Journal of the Geological Society, London, Vol.114, 449-482. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E165 | |||