| Computer Code: |
GBC |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Ludlow Epoch (SU)
— Early Devonian Epoch (DL) |
| Lithological Description: |
[Obsolete: use DRCR] This is probably only a working name used at the commencement of resurvey, and possibly refers to exposures of conglomerates in the Burn of Glasslaw [NO 861 839] that crosses the Dunottar-Crawton and Arbuthnot-Garvock south-west of Stonehaven. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
The extent of the Crawton part of the Dunnottar-Crawton Group is quite modest and restricted to a narrow area south and west of Stonehaven and two small inliers near Alyth. There are conglomerates within the Crawton Volcanic Formation but not obviously associated with a burn of that name. However, there is a Glaslaw Burn near Stonehaven that crosses Crawton Volcanic Formation and sandstone and conglomerate of the Dunnottar-Crawton Group at NO 861 839. The maps of this area, purportedly Kincardineshire 20NE on the GDI are of Bervie, further south and so incorrect. This may be the source of the Glasslin name. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Geology of the Stonehaven District, 1:10000 sheets NO88NW, NO88NE, NO88SWand NO88SE (south of the Highland Boundary Fault) : part of 1:50000 [Scotland] sheets 67 (Stonehaven) and 66E (Banchory): British Geological Survey, Onshore Geology Series, Technical Report WA/94/19. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
