| 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. Toghill, P and Beale, S. 1994. |
| 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.] |
| Toghill, P and Beale, S. 1994. Ercall quarries, Wrekin area, Shropshire: Geology teaching trail. Geologists' Association Guide, No.48. [London: Geologists' Association.] |
| 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: H.M.S.O.). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
