| Computer Code: |
FCM |
Preferred Map Code: |
FcM |
| Status Code: |
Pending Upgrade |
| Age range: |
Arundian Substage (CJ)
— Arundian Substage (CJ) |
| Lithological Description: |
Black argillaceous limestone and mudstone. |
| Definition of Lower Boundary: |
Sharp limestone/mudstone junction, underlain by the Pant Limestone Member. |
| Definition of Upper Boundary: |
Sharp limestone/mudstone junction, overlain by the White Orr Limestone Member. |
| Thickness: |
1.7 metres. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
High Tor Limestone Formation (HTL)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Sheet 262, Bridgend |
| Reference(s): |
| Fletcher, C J N. 1983. Geological notes and local details for 1:10,000 Sheets SS87SE, St. Brides Major and part of 1:50,000 Sheet 261/262 (Bridgend). British Geological Survey, Onshore Geology Series, Technical Report WA/83/19. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E262
|
