The BGS Lexicon of Named Rock Units — Result Details

Flichity Semipelite Formation

Computer Code: FLTY Preferred Map Code: F
Status Code: Full
Age range: Tonian Period (AT) — Tonian Period (AT)
Lithological Description: Gneissose, locally migmatitic semipelite with minor quartzite. Quartzite is more common near contacts with adjacent units.
Definition of Lower Boundary: Transitional with the Beinn Bhreac Psammite Formation (BBPS); incoming of first persistent quartzite layer. No way-up criteria.
Definition of Upper Boundary: Sheared contact with the structurally overlying Slochd Psammite Formation (SLCD); No way-up criteria.
Thickness: c. 300 m (deformed thickness).
Geographical Limits: Central Highlands of Scotland. Strathnairn to Findhorn area, in the Tomatin, Aviemore and Nairn districts.
Parent Unit: Dava Subgroup (DAVA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Rocky ridge of Creag Flichity [NH 685 286]. 
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 S084