| Computer Code: |
SHAS |
Preferred Map Code: |
SHS |
| Status Code: |
Full |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
Sandstone, grey-brown to reddish brown to purple, fine- to medium-grained, lithic, locally micaceous, commonly planar bedded, rare sandy siltstone beds, coarsening north-eastwards from Glenny Burn [NN 5700 0213]. |
| Definition of Lower Boundary: |
The sharp contact at the top of the Gartartan Conglomerate Member of the Ruchill Flagstone Formation. |
| Definition of Upper Boundary: |
North-east of Malling [NN 5625 0065], seen as a diachronous transition to the Malling Conglomerate Member, south of Malling, there is a diachronous transition to the undivided Cromlix siltstone facies. |
| Thickness: |
Up to 300 m near Arntamie [NN 565 010]. |
| Geographical Limits: |
The north-west limb of the Strathmore Syncline, from Shannochill [NS 542 992] to north-east of Lochan Balloch, probably re-appearing in Keltie Water, north-east of Callander. |
| Parent Unit: |
Cromlix Mudstone Formation (CXF)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Yard of Over Shannochill Farm, located on bedrock. |
| Reference Section |
Tributary of Glenny Burn, 550m above confluence. |
| Reference(s): |
| Phillips, E R, and Aitken, A M. 1998. The petrology and composition of the Lower Old Red Sandstone exposed in the Aberfoyle Area (Sheet 38E), Central Scotland. British Geological Survey, Technical Report, WG/98/10. |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S038
|
