| Computer Code: |
NFLM |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Visean Age (CV)
— Visean Age (CV) |
| Lithological Description: |
[Obsolete: use DYLS] A pale to dark grey, argillaceous, shelly, bioclastic limestone, interpreted to be of marine origin. |
| Definition of Lower Boundary: |
Generally by a change from marine mudstone of the Dykebar and Balmore Marine bands, belonging to Lawmuir Formation, overlying thin coal or seatrocks. |
| Definition of Upper Boundary: |
Generally by a change to marine mudstone of the Dykebar and Balmore Marine bands belonging to Lawmuir Formation, overlain by non-marine sandy strata. |
| Thickness: |
Up to 1.4m thick in the Paisley and Glasgow districts, elsewhere otherwise represented by the Dykebar and Balmore Marine Bands |
| Geographical Limits: |
The Paisley and Glasgow area of the Midland Valley of Scotland. |
| 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 |
The Hurlet Borehole NS56SW/333, where it is 0.72m thick in two leaves, at a base depth of 84.26m. |
| Reference(s): |
| Hall, I H S, Browne, M A E, and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir for 1:50000 Geological Sheet 30E (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S023
|
