The BGS Lexicon of Named Rock Units — Result Details

Ben Lui Schist Formation

Computer Code: BLUS Preferred Map Code: symb
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Dominantly schistose to gneissose semipelite. Psammite locally developed in lower parts and pebbly psammite and psammite locally developed at top.
Definition of Lower Boundary: Top of hornblendic rocks of the underlying Farragon Volcanic Formation or calcareous rocks of Ben Lawers Schist Formation.
Definition of Upper Boundary: Base of calcareous lithologies of the Loch Tay Limestone Formation.
Thickness: Not known.
Geographical Limits: Ben Lui to Glen Isla.
Parent Unit: Crinan Subgroup (DBCN)
Previous Name(s): BEN LUI SCHIST (DBBU)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Ben Lui area, Perthshire. 
Reference Section  Head of Glen Isla west to Glen Fearnach. 
Reference(s):
Crane, A, Goodman, S, Krabbendam, M K, Leslie, A G, Paterson, I B, Robertson, S and Rollin, K, 1996. Geology of the Glen Shee district. Memoir of the British Geological Survey, Sheet 56W and adjacent areas (Scotland). 
Sturt, B A, 1960. The geological structure of the area south of Loch Tummel. Quarterly Journal of the Geological Society of London, Vol.117, 131-156. 
Bailey, E B and McCallien, W J, 1937. Perthshire tectonics: Schiehallion to Glen Lyon. Transactions of the Royal Society of Edinburgh, Vol.59, 79-117. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S056 S055 S029 S028 S055 S038 S045 S054 S046 S046 S047 S047 S065