The BGS Lexicon of Named Rock Units — Result Details

Dava Subgroup

Computer Code: DAVA Preferred Map Code: DS
Status Code: Full
Age range: Tonian Period (AT) — Tonian Period (AT)
Lithological Description: Heterogenous succession of predominantly gneissose psammite, semipelite and subordinate quartzite.
Definition of Lower Boundary: Not exposed.
Definition of Upper Boundary: Sheared, tectonised or interpreted unconformable contact with overlying Grampian Group strata.
Thickness: Unknown.
Geographical Limits: Central Highlands of Scotland, Glen Bachor, and between Strathnairn and Grantown-on Spey.
Parent Unit: Badenoch Group (BADN)
Previous Name(s): Central Highland Migmatite Complex (CEHI)
Central Highland Migmatite Complex (CEHI)
Dava Succession [Obsolete Name and Code: Use DAVA] (-1477)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Flichity Ridge, Between Strathnairn and Upper Strathdearn. 
Reference Section  Slochd-Insharn Roadcuts in A9 and in low hills to south. 
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. 
Cawood, P A, Nemchin, A A, Smith, M, and Loewy, S. 2003. Source of the Dalradian Supergroup constrained by U-Pb dating of detrital zircon and implications for the East Laurentian margin. Journal of the Geological Society, Vol. 160, 231-246. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S074 S084 S074 S083