The BGS Lexicon of Named Rock Units — Result Details

Aberdeen Formation

Computer Code: ABDN Preferred Map Code: litho
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Interlayered psammite and semipelite, with subsidiary pelite and sporadic minor calcareous horizons.
Definition of Lower Boundary: Not seen: there is probably a major antiform running through the centre of the area of outcrop.
Definition of Upper Boundary: Incoming of coarse, gritty psammite in area to north of Oldmeldrum. Elsewhere upper contact is obscured by lateral transition to Ellon Formation.
Thickness: Several kilometres, but not measureable due to intense folding and migmatisation over most of the outcrop.
Geographical Limits: Occupies most of Sheet 77 and much of the eastern part of sheet 76E, together with small parts of sheets 86E and 87W. Probable extension into Sheet 67.
Parent Unit: Argyll Group (ARGY)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Aberdeen Division
Type Area  For Sheet 76E: Exposures in stream and beside ruins of Balquhain Castle, and in disused quarry 250m north-north-east of Netherton Smithy. 
Type Area  For Sheet 77: Coast section from south side of Cove Harbour to headland east of Crawpeel Shore. 
Munro, M, 1986. Geology of the country around Aberdeen. Memoir of the British Geological Survey, Sheet 77 (Scotland). 
Harris, A L and Pitcher, W S, 1975. The Dalradian Supergroup. "In" Harris, A L, Shackleton, R M, Watson, J, Downie, C, Harland, W B and Moorbath, S. A correlation of the Precambrian rocks in the British Isles. Geological Society Special Report, No.6. p.52-75. Scottish Academic Press, Edinburgh. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S067 S066 S087 S077 S076 S086