| 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 [Obsolete Name and Code: Use CDGR]
(-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 |
