The BGS Lexicon of Named Rock Units — Result Details

Struie Group [Obsolete Name And Code: See STIE]

Computer Code: STRU Preferred Map Code: notEntered
Status Code: Index Level
Age range: Pragian Age (DP) — Emsian Age (DE)
Lithological Description: Lenticular conglomerates intercalated with grey and black flaggy sandstones, siltstones and mudstones. Dark grey siltstones and calcareous mudstones also occur.
Definition of Lower Boundary: Drawn at base of basal breccia - conglomerate of the Struie Group where it rests unconformably on the Moine Basement Rocks.
Definition of Upper Boundary: Drawn at unconformable upward change from siltstone and mudstone of the Struie Group to conglomerate of the Strath Rory Group.
Thickness: c. 2500m
Geographical Limits: Highlands, Scotland.
Parent Unit: none recorded or not applicable
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Cromarty, Highlands, Scotland. 
Type Area  Struie Mount, Easter Ross, Highlands, Scotland. 
Armstrong, M, 1977. The Old Red Sandstone of Easter Ross and the Black Isle. "In" Gill, G. (Editor). The Moray Firth area - geological studies. Inverness Field Club. 
House, M R, Richardson, J B, Chaloner, W G, Allen, J R L, Holland, C H and Westoll, T S. 1977. A Correlation of Devonian rocks of the British Isles. Geological Society of London, Special Report No.8, Scottish Academic Press, Edinburgh. 
Johnstone, G S, 1989. The Northern Highlands of Scotland. British Regional Geology. p.122. 
Mykura, W, 1983. Old Red Sandstone. "In" Craig, G Y. Geology of Scotland, 2nd. edition, Edinburgh. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable