The BGS Lexicon of Named Rock Units — Result Details

Carn Dubh Quartzite Member

Computer Code: CDQU Preferred Map Code: symb
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Clean white pebbly quartzite with cross-bedding.
Definition of Lower Boundary: Position where dominantly quartzite succession replaces the dominantly graphitic succession of the Blair Atholl Subgroup.
Definition of Upper Boundary: Top of clean white thickly bedded quartzites below the more thinly bedded, cream and less clean quartzites of the Bad an Loin Member.
Thickness: To 200m
Geographical Limits: Northern part of Glen Shee district (Sheet 56W).
Parent Unit: Creag Leacach Quartzite Formation (CLQU)
Previous Name(s): Parts of Creag Leacach Quartzite [Obsolete Name and Code: Use CDQU] (-2676)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Creag Leacach - Carn an Daimh ridge. 
Type Area  Carn Dubh area. 
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