| Computer Code: |
SBLA |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Arundian Substage (CJ)
— Asbian Substage (CR) |
| Lithological Description: |
About five flows of plagioclase-macrophyric basalt (Markle type). |
| Definition of Lower Boundary: |
Where the Saughen Braes Lava Member is fully developed in the north-east of the area, it is underlain by the Burncrooks Volcaniclastic Member. |
| Definition of Upper Boundary: |
The Saughen Braes Lava Member interdigitates with the Auchineden Lava Member and in places underlies it (for example around [NS 443 772]). To the west of Lang Craigs [NS 430 760] the member is completely replaced by the Auchineden Lava Member. |
| Thickness: |
0-40 m |
| Geographical Limits: |
Restricted to the Kilpatrick Hills, north-west of Glasgow, the unit occurs on Saughen Braes [NS 462 783], thinning out to the south near Fynloch [NS 458 793]. |
| Parent Unit: |
Clyde Plateau Volcanic Formation (CPV)
|
| Previous Name(s): |
Saughen Braes Lavas [Obsolete Name and Code: Use SBLA]
(-3019)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
The unit crops out on Saughen Braes [NS 462 783]. Hall et al., 1998. |
| Reference(s): |
| 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. |
| Hall, I H S, Browne, M A E and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S030
|
