| Computer Code: |
CPLS |
Preferred Map Code: |
MAHO |
| Status Code: |
Full |
| Age range: |
Brigantian Substage (CX)
— Brigantian Substage (CX) |
| Lithological Description: |
[Obsolete: use MAHO] A grey, fine-grained, slightly bioclastic,well-bedded limestone with a sandy base, and interpreted to be of marine origin, containing brachiopods and rare rugose corals, crinoids, and commonly Zoophycus caudagalli trace fossils. |
| Definition of Lower Boundary: |
Generally a conformable change from a rooted sandstone within the Lower Limestone Formation lying about 20m above the Middle (and Upper Skateraw) Limestone (now named the Blackhall Limestone). |
| Definition of Upper Boundary: |
Usually a conformable change to sandstone within the Lower Limestone Formation, which separates this from the Barns Ness Limestone (now the Mid Hosie Limestone) about 10m above, |
| Thickness: |
Ranging from 2.4m to 2.9m in East Lothian |
| Geographical Limits: |
In East Lothian in the Barns Ness area near Dunbar. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Barns Ness Lighthouse, East Lothian. |
| Reference(s): |
| Browne, M A E, Dean, M T, Hall, I H S, McAdam, A D Monro, S K, and Chisholm, J I. 1999. A lithostratigraphical framework for the Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Research Report RR/99/07. |
| Davies, A, McAdam, A D and Cameron, I B. 1986. Geology of the Dunbar district. Memoir of the British Geological Survey, Sheet 33E and part of Sheet 41 (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S033
|
