The BGS Lexicon of Named Rock Units — Result Details
Buttergask Flagstone Member
Computer Code: | BTG | Preferred Map Code: | BTG |
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Status Code: | Full | ||
Age range: | Early Devonian Epoch (DL) — Early Devonian Epoch (DL) | ||
Lithological Description: | Grey and brown, fine-grained interbedded sandstones, siltstones and mudstones. | ||
Definition of Lower Boundary: | The top of the Sheriffmuir Sandstone Member, where medium- to coarse-grained sandstones are overlain by fine-grained sandstones and siltstones of the Buttergask Flagstone Member. | ||
Definition of Upper Boundary: | The base of the Dunblane Formation, where the medium- to coarse-grained sandstones overlie a fine-grained sandstone and siltstone sequence. | ||
Thickness: | Up to 270 m thick. | ||
Geographical Limits: | The Stirling to Alloa area on the south-east limb of the Strathmore Syncline. | ||
Parent Unit: | Scone Sandstone Formation (SCN) | ||
Previous Name(s): | Buttergask Member [Obsolete Name and Code: Use BTG]
(-4504)
Buttergask Formation [Obsolete Name and Code: Use BTG] (-2029) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Partial Type Section | Buttergask Burn section, 2km west of Blackford. Francis et al., 1970. | ||
Partial Type Section | Millstone Burn Section, 2km south of Greeloaning. Francis et al., 1970. | ||
Reference(s): | |||
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). | |||
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 | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S039 S039 |