| Computer Code: |
MSGR |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Mid Devonian Epoch (DM)
— Mid Devonian Epoch (DM) |
| Lithological Description: |
Red grey and yellow sandstones sometimes lightly friable, and reddish marly clays; included on horizon of Silurian calcareous shale with fossils. |
| Definition of Lower Boundary: |
Drawn at the base of the sandstone of the Millbuie Sandstone Group where it rests conformably upon conglomerate of Devonian age. |
| Definition of Upper Boundary: |
The group is unconformably overlain by Pleistocene deposits. |
| Thickness: |
900 metres approx. |
| Geographical Limits: |
Millbuie Moor, Black Isle, Ross-shire. |
| Parent Unit: |
Old Red Sandstone Supergroup (ORS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Millbuie, Black Isle. |
| Reference(s): |
| Horne, J and Hinxman, L W and others, 1914. Beauly and Inverness. Memoir of the Geological Survey of Great Britain, Vol.62. |
| Johnstone, G S and Mykura, W. 1989. British regional geology: the Northern Highlands (4th edition) (London: HMSO for the British Geological Survey.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
