The BGS Lexicon of Named Rock Units — Result Details

Craig An Daimh Gravel Formation

Computer Code: CDGR Preferred Map Code: CAD
Status Code: Full
Age range: Anglian Stage (QA) — Wolstonian Stage (QO)
Lithological Description: Cobble gravel with a sandy, silty,clayey matrix, clast-supported, very dense, containing clasts mainly of Devonian sandstones and siltstones, with some granite and psammite. Strong weathering profile developed with pelitic schist clasts decomposed.
Definition of Lower Boundary: Sharp, undulating, erosional, unconformable contact with stony sandy clayey diamicton of the Suidheig Till Formation.
Definition of Upper Boundary: Gradational contact with white clayey gravel of the Rehiran Cryoturbate Member of the Dalcharn Palaeosol Formation.
Thickness: 3m
Geographical Limits: Sheet 84W (Fortrose), southeast of Inverness.
Parent Unit: Inverness (Albion) Glacigenic Subgroup (IAG)
Previous Name(s): Dalcharn Gravel Formation (-3285)
Alternative Name(s): Craig An Daimh Member
Stratotypes:
Type Section  Exposed near the base of river cliff sections of the Allt Dearg,[NH 8157 4537 - NH 8143 4116] 6km southwest of Cawdor, Nairnshire, at the Dalcharn Interglacial site (west). Unit 5 of The Dalcharn East and Dalcharn West (Section B) of Walker, M J C and 6 others. 1992. 
Reference(s):
Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). 
Walker, M J and 6 others. 1992. Allt Odhar and Dalcharn: two pre-Late Devensian (Late Weichselian) sites in northern Scotland. Journal of the Quaternary Science, Vol.7, 69-86. 
Sutherland D G and Gordon, J E. (editors). 1993. The Quaternary of Scotland. Geological Conservation Review Series: 6. London: Chapman and Hall. 
Sutherland, D G. 1999. Scotland. 99-114 in Bowen D Q (Editor), A revised correlation of Quaternary deposits in the British Isles. Special Report of The Geological Society of London, No.23. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable