| Computer Code: |
CLO |
Preferred Map Code: |
Clo |
| Status Code: |
Full |
| Age range: |
Asbian Substage (CR)
— Brigantian Substage (CX) |
| Lithological Description: |
Fossiliferous marine shale, red dolomitic limestone, sandstone and seatearth. |
| Definition of Lower Boundary: |
Unconformable on Lower Palaeozoic turbidites. |
| Definition of Upper Boundary: |
Unconformably overlain by Upper Carboniferous strata. |
| Thickness: |
At least 25m |
| Geographical Limits: |
Southern part of the Thornhill Basin at Closeburn, Barjarg, Dollard Hill. |
| Parent Unit: |
Yoredale Group (YORE)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Section in Closeburn Quarry (Upper). (Limestones no longer exposed). |
| Reference Section |
Section in Closeburn Quarry (Lower). (Limestone no longer exposed). |
| Reference(s): |
| Pringle, J and Richey, J E, 1931. Summary of Progress of the Geological Survey for 1930, 25-33 |
| McMillan, A A. 2002. Geology of the New Galloway and Thornhill District. 2002. Memoir of the British Geological Survey. Sheets 9W and 9E (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S009
|
