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): Wenlock Limestone (-2305)
Upper Wenlock Limestone [Obsolete Name And Code: Use WEL] (UWL)
Alternative Name(s): none recorded or not applicable
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). 
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E216 E183 E180 E199 E181 E167