The BGS Lexicon of Named Rock Units — Result Details

Allt Odhar Peat Member

Computer Code: AOPT Preferred Map Code: AO
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Peat highly compressed, black, with lenses of pebbly peaty sand and bleached white sand. Containing beetle remains and pollen indicative of (early Devensian) interstadial conditions
Definition of Lower Boundary: Sharp, draped, conformable contact with underlying cobble gravel of the Odhar Gravel Member.
Definition of Upper Boundary: Unconformable, glacitectonic contact with stiff, stony sand/clay diamicton of the overlying Athais Till Formation.
Thickness: 0.6m
Geographical Limits: Sheet 84W (Fortrose), southeast of Inverness.
Parent Unit: Moy Burn Palaeosol Formation (MBP)
Alternative Name(s): none recorded or not applicable
Type Section  Exposed midway up a river cliff of the Allt Odhar, immediately upstream of its confluence with the Caochan nan Suidheig, Moy Estate, 16km southeast of Inverness. Till occurs both lower and higher in this section 
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. 
Fletcher, T P and 5 others. 1996. Geology of the Fortrose and eastern Inverness District. Memoir of the British Geological Survey, Sheet 84W (Scotland) 
Sutherland D G and Gordon, J E. (editors). 1993. The Quaternary of Scotland. Geological Conservation Review Series: 6. London: Chapman and Hall. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: