The BGS Lexicon of Named Rock Units — Result Details

Corrieyairack Pluton

Computer Code: CYACK Preferred Map Code: CY
Status Code: Pending Upgrade
Age range: Silurian Period (S) — Devonian Period (D)
Lithological Description: Granodiorite, aphyric, pinkish-white, massive equigranular, medium- to coarse-grained, hornblende-/biotite-bearing rock. Separate mafic (more hornblende-rich) granodiorite body at southern end of main pluton. Detached white to pink, medium- to coarse-grained, xenolithic leucogranite body to south of main pluton. Minor granite veins throughout pluton.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: Southwestern Monadhliath Mountains in north-eastern part of the Glen Roy district and north-western part of the Dalwhinnie district (Scotland sheets 63W and 63E).
Parent Unit: Argyll And Northern Highlands Granitic Suite (ANHGR)
Previous Name(s): Corrieyairack Granitic Complex (-4581)
Alternative Name(s): none recorded or not applicable
Reference Section  Creag Tharsuinn, between upper Glen Roy and Glen Spean. [Key et al, 1997]. 
Type Area  Summit region of Beinn Teallach on north side of Glen Spean. [Key et al, 1997]. 
Key, R M, Clark, G C, May, F, Phillips, E R, Chacksfield, B C and Peacock, J D, 1997. Geology of the Glen Roy district. Memoir of the British Geological Survey, Sheet 63W [Scotland]. 
British Geological Survey, 2000. Dalwhinnie, Scotland. Sheet 63E. Solid Geology 1:50000. [Keyworth, Nottingham: British Geological Survey]. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S063 S063