The BGS Lexicon of Named Rock Units — Result Details

Upper Quarried Limestone Member

Computer Code: UQL Preferred Map Code: UQL
Status Code: Full
Age range: Homerian Age (SH) — Homerian Age (SH)
Lithological Description: Limestone, grey, bioclastic, micritic with abundant shelly fossils and thin calcareous mudstone partings; reefs (bioherms) locally present.
Definition of Lower Boundary: Base of limestone-dominated beds overlying calcareous mudstone-dominated Nodular Limestone Member.
Definition of Upper Boundary: Base of pale grey silty calcareous mudstone with sporadic limestone nodules of the overlying Lower, Middle and Upper Elton formations (undifferentiated). These are equivalent to Lower Ludlow Shales.
Thickness: 8.6-10.4m at Wren's Nest, Dudley.
Geographical Limits: West Midlands.
Parent Unit: Much Wenlock Limestone Formation (WEL)
Previous Name(s): Upper Wenlock Limestone [Obsolete Name And Code: Use WEL] (UWL)
Quarried Limestone Member, Upper [Obsolete Code: Use UQL] (QLU)
Upper Quarried Limestone (-4953)
Alternative Name(s): none recorded or not applicable
Reference Section  Wren's Nest Geological Trail, Dudley; NCC 'The Fossil Trench'; Locality 5 of Cutler and others, 1990. 
Type Section  Wren's Nest Geological Trail, Dudley; NCC Quarry trench, Mons Hill; Locality 1 of Cutler and others, 1990. 
Butler, A J, 1939. The stratigraphy of the Wenlock Limestone of Dudley. Quarterly Journal of the Geological Society of London, 95, 37-74. 
Cutler, A, Oliver, P G and Reid, C G R, 1990. Wren's Nest National Nature Reserve. Geological Handbook and Field Guide. Nature Conservancy Council/Dudley MBC. 
Butler, A J, 1937. On Silurian and Cambrian rocks encountered in a deep boring at Walsall, South Staffordshire, Geological Magazine, 74, 241-257. 
Basset, M G, 1974. Review of the stratigraphy of the Wenlock Series of the Welsh Borderlands and South Wales. Palaeontology, 17, 745-777. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E168 E154 E167