The BGS Lexicon of Named Rock Units — Result Details
Much Wenlock Limestone Formation
| Computer Code: | WEL | Preferred Map Code: | WeL |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Homerian Age (SH) — Homerian Age (SH) | ||
| Lithological Description: | Pale grey nodular to thinly bedded limestones with reef bodies. | ||
| Definition of Lower Boundary: | Base of lowest regularly bedded limestone in 2-3m transitional zone with underlying Coalbrookdale Formation. | ||
| Definition of Upper Boundary: | Upward transition into alternating siltstones and limestones of the Elton Formation (ie lower part of Lower Ludlow Shale). | ||
| Thickness: | 29m in type area. | ||
| Geographical Limits: | Welsh Borderland. | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Upper Wenlock Limestone [Obsolete Name And Code: Use WEL]
(UWL)
Wenlock Limestone [Obsolete Name and Code: Use WEL, UWL, LWL] (-2305) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | For base (Reef tract). Exposures on south side of A458 road cutting on Harley Hill, near Much Wenlock. (Bassett, 1989, p.59). | ||
| Type Section | Section for base (off-Reef tract). East side of the Longville in the Dale to Stanway road. (Bassett, 1989, p.59). | ||
| Reference(s): | |||
| Bassett, M G. 1989. The Wenlock Series in the Wenlock area. 51-73 in A global standard for the Silurian System. Holland, C H, and Bassett, M G (editors). National Museum of Wales, Gelogical series No. 9, Cardiff. | |||
| Bassett, M G, Cocks, L R M, Holland, C H, Rickards, R B, and Warren, P T. 1975. The type Wenlock Series. Report of the Institute of Geological Sciences, No. 75/13. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E216 E183 E180 E199 E181 E167 | |||