The BGS Lexicon of Named Rock Units — Result Details

Corrieyairack Subgroup

Computer Code: GRCO Preferred Map Code: CO
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Feldspathic psammites, semipelites and micaceous psammites, subordinate quartzites, calc-silicate rocks.
Definition of Lower Boundary: Not exposed.
Definition of Upper Boundary: Overlain conformably by quartzose psammites, semipelites and quartzites of the Appin Group.
Thickness: up to 10km.
Geographical Limits: Central Highlands of Scotland, notably in the southwest part of the Monadhliath Mountains.
Parent Unit: Grampian Group (GRAM)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Loch Laggan area. 
Winchester, J A and Glover, BW, 1988. The Grampian Group, in Winchester, J A [ed.]. Late Proterozoic stratigraphy of the northern Atlantic regions. Blackie, Glasgow, 146-161. 
Glover, B W and Winchester, J A, 1989. The Grampian Group, a major Late Proterozoic clastic sequence in the Central Highlands of Scotland. Journal of the Geological Society, London. Vol.146, 85-96. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S062 S064 S074 S074 S063 S063 S073 S073 S054