| Computer Code: |
BUT |
Preferred Map Code: |
BUT |
| Status Code: |
Full |
| Age range: |
Late Devonian Epoch (DU)
— Late Devonian Epoch (DU) |
| Lithological Description: |
Mainly conglomerate with subordinate red sandstone. |
| Definition of Lower Boundary: |
Not seen, presumed to be unconformable on Lower Devonian. |
| Definition of Upper Boundary: |
Sharp junction with the Kinnesswood Formation. |
| Thickness: |
About 1500 m thick. |
| Geographical Limits: |
Island of Bute, on sheets 21, 29. |
| Parent Unit: |
Stratheden Group (SAG)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
South of the Island of Bute, Strathclyde, Scotland, sheet SO29E. |
| Reference(s): |
| Browne, M A E, Smith, R A, and Aitken, A M. 2002. Stratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. British Geological Survey Research Report RR/01/04. 67 pp. |
| Paterson, I B and Hall, I H S. 1986. Lithostratigraphy of the late Devonian and early Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Report, 18/3. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S029
|
