The BGS Lexicon of Named Rock Units — Result Details

Wrekin Quartzite Formation

Computer Code: WQ Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Comley Series (EC) — Comley Series (EC)
Lithological Description: Quartzose sandstones (orthoquartzites) comprising rounded quartz grains, subordinate feldspar and some glauconite. Locally pebbly and conglomeratic at base, with clasts of Precambrian (Uriconian) volcanic material. Sporadic mudstone interbeds.
Definition of Lower Boundary: Unconformable on Ercall Granophyre.
Definition of Upper Boundary: Sharp conformable junction with glauconitic sandstones of the overlying Lower Comley Sandstone Formation.
Thickness: To 40m
Geographical Limits: Shropshire.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Ercall Quarries, 2km northeast of the summit of the Wrekin. 
Reference(s):
Rushton, A W A. 1974. The Cambrian of Wales and England, 43-121 in Holland, C H (editor), The Cambrian of the British Isles, Norden and Spitzbergen (Lower Palaeozoic rocks of the world, 2). [London: John Wiley and Son.] 
Pocock, R W, Whitehead, T H, Wedd, C B and Robertson, T. 1938. Shrewsbury District including the Hanwood Coalfield. Memoir of the Geological Survey of Great Britain, England and Wales. [London: HMSO.] 
Toghill, P and Beale, S. 1994. Ercall quarries, Wrekin area, Shropshire: Geology teaching trail. Geologists' Association Guide, No.48. [London: Geologists' Association.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable