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
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:
E167 E216 E183 E180 E199 E181