The BGS Lexicon of Named Rock Units — Result Details

Dunblane Sandstone Member

Computer Code: DUF Preferred Map Code: DUF
Status Code: Full
Age range: Early Devonian Epoch (DL) — Early Devonian Epoch (DL)
Lithological Description: Purple and brown, medium- and coarse-grained sandstones, subsidiary purple mudstones and rare pebbly sandstone beds.
Definition of Lower Boundary: Where medium- to coarse-grained sandstones overlie the top of the fine-grained sandstones and siltstones of the Buttergask Flagstone Member.
Definition of Upper Boundary: The base of the lowest siltstone or mudstone of the Cromlix Mudstone Formation.
Thickness: About 750 m thick.
Geographical Limits: The south-east limb of the Strathmore Syncline, in the Stirling to Alloa area.
Parent Unit: Scone Sandstone Formation (SCN)
Previous Name(s): Dunblane Formation (-220)
Dunblane Member (-2158)
Alternative Name(s): Tannadice Sandstone Member
Stratotypes:
Partial Type Section  Lower part: stream sections, 1.6 km north-east of Barbush, north of Dunblane. Francis et al., 1970. 
Partial Type Section  Upper part: cliff section north-east of the River Teith, 3 km west of Bridge of Allan. Francis et al., 1970. 
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. 
Armstrong, M and Paterson, I B, 1970. The Lower Old Red Sandstone of the Strathmore Region. Report of the Institute of Geological Sciences No.70/12 
Francis, E H, Forsyth, I H, Read, W A and Armstrong, M. 1970. The geology of the Stirling district. Memoir of the Geological Survey of Great Britain, Sheet 39 (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S039 S039 S039