Computer Code: |
BBSA |
Preferred Map Code: |
BBS |
Status Code: |
Full |
Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
Lithological Description: |
A reddish grey to reddish brown, fine- to coarse-grained, commonly poorly sorted, locally massive, locally micaceous, sub-lithic sandstone, with igneous clasts. |
Definition of Lower Boundary: |
A faulted contact with Highland Border Complex rocks. |
Definition of Upper Boundary: |
A sharp contact with the overlying Balleich Lava Member of Craig of Monievreckie Conglomerate Formation. |
Thickness: |
Inferred to be 200 m thick in the Aberfoyle area. |
Geographical Limits: |
The north-west limb of the Strathmore Syncline, adjacent to the Highland Boundary Fault, between Balleich and Drum of Clashmore. |
Parent Unit: |
Craig of Monievreckie Conglomerate Formation (CMVC)
|
Previous Name(s): |
Bofrishlie Burn Sandstone Formation [Obsolete Name and Code: Use BBSA]
(-3820)
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Alternative Name(s): |
none recorded or not applicable
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Stratotypes: |
Type Area |
Bofrishlie Burn 400m west of Deer Craig. |
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. |
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. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S038
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