| Computer Code: |
CALS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Brigantian Substage (CX)
— Brigantian Substage (CX) |
| Lithological Description: |
Muddy limestone with bands of calcareous mudstone; less muddy in its upper part.
Marks the base of the Alston Formation in the Solway Basin. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
c. 8 m. |
| Geographical Limits: |
Langham sheet area, with correlatives across Northern England and Southern Scotland. |
| Parent Unit: |
Alston Formation (AG)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Lexique Stratigraphique International. 1971. Volume 1, Europe, Fascicule 3a, England, Wales and Scotland, Part 3a VII, Lower Carboniferous (Dinantian). |
| Dean, M T, Browne, M A E, Waters, C N, and Powell, J H. 2011. A lithostratigraphical framework for the Carboniferous successions of northern Great Britain (onshore). British Geological Survey Research Report RR/10/007. 165 pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S011
|
