| Computer Code: |
KYQ |
Preferred Map Code: |
KynQ |
| Status Code: |
Full |
| Age range: |
Neoproterozoic Era (AZ)
— Neoproterozoic Era (AZ) |
| Lithological Description: |
Massive, white to cream, granular impure feldspathic quartzite, probably forming a lensoid unit thickened by folding. Quartzite thins and becomes more schistose along strike from the type locality to the west. |
| Definition of Lower Boundary: |
Gradational boundary with underlying Tummel Psammite Formation. |
| Definition of Upper Boundary: |
Gradational boundary with overlying Kynachan Psammite Formation. |
| Thickness: |
0 - 500m |
| Geographical Limits: |
From Allt na Moine Buidhe [NN 720 611] via the main ridge of Creag Kynachan [NN 761 579] to the Loch Tay Fault near Blairbuie [NN 808 605]. Also has outcrop near the Torr Dubh structured dome resulting from interference of the Clunes and Bohespic antiforms [NN 745 632]. |
| Parent Unit: |
Strathtummel Subgroup (STEL)
|
| Previous Name(s): |
Kynachan Quartzite [Obsolete Name and Code: Use KYQ]
(-4743)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Ridge of Creag Kynachan. |
| Reference(s): |
| Treagus, J E. 2001. Solid geology of the Schiehallion district. Memoir of the British Geological Survey, Sheet 55W (Scotland). |
| Stephenson, D and Gould, D. 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. |
| Thomas, P R, 1980. The stratigraphy and structure of the Moine rocks north of the Schiehallion Complex, Scotland. Journal of the Geological Society, London, Vol.137, 469-482. |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S055
|
