The BGS Lexicon of Named Rock Units — Result Details
Strath Fionan Pale Limestone Formation
Computer Code: | SFPL | Preferred Map Code: | SFPL |
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Status Code: | Full | ||
Age range: | Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ) | ||
Lithological Description: | White, dolomitic limestone with tremolite, containing thin siliceous ribs and laminae with muscovite and phlogopite. | ||
Definition of Lower Boundary: | Transitional boundary from semipelite to pelite of Strath Fionan Banded Semipelite Formation. | ||
Definition of Upper Boundary: | Sharp contact with semipelite of the Tullochroisk Semipelite Formation. | ||
Thickness: | 0 - 20m in Sheet 55W; probably some tectonic thinning. | ||
Geographical Limits: | From streams draining towards Lochan an Daim [NN 7156 5811] to south bank of Allt Kynachan [NN 7776 5720]. Not present east of the Loch Tay Fault, where its place is taken by one of the limestones in the Monzie Limestone and Schist Formation. | ||
Parent Unit: | Ballachulish Subgroup (DABH) | ||
Previous Name(s): | Strath Fionan Limestone [Obsolete Name and Code: Use SFPL]
(-4876)
Monzie Limestone and Schist Formation [Obsolete Name and Code: Use SFBS, SFPL, TULS] (-4323) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Crags south of the road through Strath Fionan, c.1km southeast of south end of Lochan an Daim. Close to line C-C' (Fig.4 of Treagus, J E. 2001). | ||
Reference(s): | |||
Treagus, J E. 2001. Solid geology of the Schiehallion district. Memoir of the British Geological Survey, Sheet 55W (Scotland). | |||
Harris, A L, Haselock, P J, Kennedy, M J and Mendum, J R, 1994. The Dalradian Supergroup in Scotland, Shetland and Ireland. 33-53 in Gibbons, W E and Harris, A L (editors). A revised correlation of Precambrian rocks in the British Isles. Special Report of the Geological Society, London, No.22. | |||
Stephenson, D and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. | |||
Smith, R A and Harris, A L, 1976. The Ballachulish rocks of the Blair Atholl district. Scottish Journal of Geology, Vol.12, 153-157. | |||
Treagus, J E and King, G, 1978. A complete Lower Dalradian succession in the Schiehallion district, central Perthshire. Scottish Journal of Geology, Vol.14, 157-166. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S055 |