Computer Code: |
HHSH |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
St David's Series (ED)
— St David's Series (ED) |
Lithological Description: |
Greenish grey shaly mudstones with beds of fine-grained glauconitic and calcareous sandstone. |
Definition of Lower Boundary: |
Conformably overlie the Hill House Grits (Upper Comley Sandstone Formation). |
Definition of Upper Boundary: |
Unknown, but succeeded in the Comley area by the Shoot Rough Road Sandstone. |
Thickness: |
Up to 100m |
Geographical Limits: |
Church Stretton area, Comley, Shropshire. |
Parent Unit: |
Upper Comley Sandstone Formation (UCSS)
|
Previous Name(s): |
Hill House Shales [Obsolete Name and Code: Use HHSH]
(-2847)
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
Hill House Ridge, 600m southsoutheast of Comley, Shropshire. Cobbold, E S. 1909. |
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.] |
Cobbold, E S. 1909. On some excavations in the Cambrian rocks of Comley, Shropshire, 1907. Report of the British Association (for 1908), 231-242. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |