| 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 [Obsolete Name and Code: Use CYACK]
(-4581)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Summit region of Beinn Teallach on north side of Glen Spean. [Key et al, 1997]. |
| Reference Section |
Creag Tharsuinn, between upper Glen Roy and Glen Spean. [Key et al, 1997]. |
| Reference(s): |
| 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 1:50 000. (Keyworth, Nottingham: British Geological Survey.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S063
S063
|
