| Computer Code: |
SLN |
Preferred Map Code: |
Sln |
| Status Code: |
Pending Upgrade |
| Age range: |
Westphalian Stage (CW)
— Westphalian Stage (CW) |
| Lithological Description: |
Purplish-grey to green-grey fine- to coarse-grained cross-bedded sandstone; basal conglomerate contains cobbles of Silurian and igneous, possibly Malvernian rocks. |
| Definition of Lower Boundary: |
Unconformable on Raglan Mudstone (Siluro-Devonian). |
| Definition of Upper Boundary: |
Overlain by Westphalian D Coal Measures. |
| Thickness: |
80m. Thinning to 0 within 2km to northwest; cut out by faulting within 0.5km to east of type locality. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Warwickshire Group (WAWK)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Trenchard Group [Obsolete: use TRGP]
|
| Stratotypes: |
| Type Area |
Stallion Hill, near Newent, Glos, Sheet 216. |
| Reference(s): |
| Ellison, R A. 1986. Geological Notes and Local Details for 1:10,000 Sheet SO72SW (Taynton): Part of 1:50,000 Sheet 216 (Tewkesbury) and Sheet 234 (Gloucester). Memoir of the British Geological Survey. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E216
|
