| Computer Code: |
BWCB |
Preferred Map Code: |
BEWC |
| Status Code: |
Full |
| Age range: |
Chadian Substage (CI)
— Arundian Substage (CJ) |
| Lithological Description: |
Cyclical sequences of sandstone, siltstone, mudstone and thin limestones, locally dolomitic (cementstones); locally thin seatearths and nodular algal beds. |
| Definition of Lower Boundary: |
Defined at the base of the Bogside Limestone. Conformable on Lynebank Member (Bewcastle). |
| Definition of Upper Boundary: |
Conformable upper boundary with the base of Main Algal One of the Main Algal Member (Lyne Formation) at Bewcastle. |
| Thickness: |
c. 180 m (Bewcastle). |
| Geographical Limits: |
Northumberland - Solway Basin. Bewcastle district (England Sheet 12). |
| Parent Unit: |
Lyne Formation (LYNE)
|
| Previous Name(s): |
Bewcastle Beds [Obsolete Name and Code: Use BWCB]
(-1406)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Bewcastle Member (Bogside Limestone to base of Main Algal Member), Ashy Cleuch upstream from Stockastead Quarry (Day, 1970). |
| Reference(s): |
| Day, J B W, and others. 1970. Geology of the neighbourhood around Bewcastle. Memoir of the British Geological Survey, Sheet 12. (England and Wales). |
| 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. |
| Leeder, M R. 1974. Lower Border Group (Tournaisian) fluvio-deltaic sedimentation and palaeogeography of the Northumberland Basin. Proceedings of the Yorkshire Geological Society, Vol.40, 129 - 180. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E012
|
