The BGS Lexicon of Named Rock Units — Result Details

Creag Buidhe Semipelite Formation

Computer Code: CGBH Preferred Map Code: CB
Status Code: Full
Age range: Tonian Period (AT) — Tonian Period (AT)
Lithological Description: Gneissose to migmatitic semipelite, locally muscovitic and garnetiferous; minor and local lenses of quartzite and units of micaceous psammite. Main lithology: gneissose semipelite (SPELGN); trace lithology: quartzite (QZITE), micaceous psammite (PSAMI).
Definition of Lower Boundary: Not exposed - interbanded with psammites of the Dava Subgroup (undifferentiated).
Definition of Upper Boundary: Conformable contact with the structurally overlying Beinn Bhreac Psammite Formation (BBPS); no way-up criteria.
Thickness: none recorded or not applicable
Geographical Limits: Central Highlands of Scotland, SE of Loch Ness. Strathnairn to Slochd area.
Parent Unit: Dava Subgroup (DAVA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Summit and NE ridge of Creag Bhuide [NH 664 314]. 
Reference Section  Meall na Fuar-ghlaic [NH 698 325]. 
Reference(s):
Krabbendam, M. 2021. A stratigraphic framework for the early Neoproterozoic successions of the Northern Highlands of Scotland. UK Stratigraphic Framework Series. British Geological Survey Open Report, OR/21/072. 86pp. 
Leslie, A G, Robertson, S, Smith, M, Banks, C J, Mendum, J R, and Stephenson, D. 2013. The Dalradian rocks of the northern Grampian Highlands of Scotland. Proceedings of the Geologists' Association, Vol. 124, 263-317. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S074 S074