Computer Code: |
BFCO |
Preferred Map Code: |
BFC |
Status Code: |
Full |
Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
Lithological Description: |
Conglomerate with quartz clasts, interbedded with pebbly sandstones. |
Definition of Lower Boundary: |
A diachronous, transitional contact with the typical sandstone facies of the undivided Teith Sandstone Formation. |
Definition of Upper Boundary: |
Sharp, diachronous contact with sandstone and mudstone facies of the undivided Teith Sandstone Formation. |
Thickness: |
Variable, 150 m at Bracklinn Falls, 350 m at Craig of Port [NN 581 022], but not found south-west of Lake of Menteith, although it may correlate with a 2 m thick quartz conglomerate in Green Burn [NS 5115 9519]. |
Geographical Limits: |
North-west limb of Strathmore Syncline between Lake of Menteith and Glen Artney. |
Parent Unit: |
Teith Sandstone Formation (THF)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
Uamh Bheag Conglomerate Member
|
Stratotypes: |
Type Section |
Bracklinn Falls, Keltie Water, near Callander. |
Reference Section |
Valley of Redrock Burn and adjacent crags, near Port of Menteith. |
Reference(s): |
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. |
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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