The BGS Lexicon of Named Rock Units — Result Details

Glen Lochsie Calcareous Schist Member

Computer Code: GLCS Preferred Map Code: symb
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Dark metacarbonate rock and psammite with graphitic pelite and some garnet calcareous schist; crystalline metacarbonate rock locally developed at top of member.
Definition of Lower Boundary: Stratigraphical boundary with the underlying Tulaichean Schist Formation. Boundary placed at a massive weathering, dark, garnet-biotite rock, where developed.
Definition of Upper Boundary: Top of prominent blue-grey coarsely crystalline metacarbonate rock below the overlying dominantly graphitic Glen Taitneach Schist Member.
Thickness: 250m
Geographical Limits: Northern part of Glen Shee district.
Parent Unit: Gleann Beag Schist Formation (GBSC)
Previous Name(s): Gleann Beag Schist (-4064)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Glen Lochsie Burn. 
Reference Section  South side of Glen Lochsie. 
Reference Section  West slopes of Glen Taitneach. 
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). 
Upton, P S, 1986. A structural cross-section of the Moine and Dalradian rocks of the Braemar area. Report of the British Geological Survey, Vol.17, No.1, 9-19. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S056 S065