Computer Code: |
HHGT |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
St David's Series (ED)
— St David's Series (ED) |
Lithological Description: |
Coarse-grained, brown-weathering glauconitic quartzose sandstones with conglomerate beds. |
Definition of Lower Boundary: |
In places conformable on the Hill House Flags of the Comley area, but locally unconformable on the Lower Comley Sandstone Formation. |
Definition of Upper Boundary: |
Conformably overlain by the Hill House Shales, also of the Upper Comley Sandstone Formation. |
Thickness: |
11 to 12m |
Geographical Limits: |
Church Stretton area, Comley, Shropshire. |
Parent Unit: |
Upper Comley Sandstone Formation (UCSS)
|
Previous Name(s): |
Hill House Grits [Obsolete Name and Code: Use HHGT]
(-317)
|
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 |