The BGS Lexicon of Named Rock Units — Result Details

Birnie Gravel Formation

Computer Code: BEGR Preferred Map Code: notEntered
Status Code: Full
Age range: Anglian Stage (QA) — Wolstonian Stage (QO)
Lithological Description: Matrix-rich red-brown clayey gravel containing cobbles of schistose semipelite, quartzite, psammite, sandstone and some chalk flints locally.
Definition of Lower Boundary: Unconformable on bedrock.
Definition of Upper Boundary: Tectonic or unconformable contact with Mill of Forest Till Formation or Benholm Clay Formation.
Thickness: To 3m
Geographical Limits: Burn of Benholm (Type Area) and local developments. Kincardine coast between Inverbervie and Gourdon.
Parent Unit: East Grampian (Albion) Glacigenic Subgroup (EGAG)
Previous Name(s): Brown Sands and Gravels [Obsolete Name and Code: Use BEGR] (-3839)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Stream section of Burn of Benholm. Locality B of Campbell, 1934. 
Reference Section  Burn of Benholm stream section (BBS4). British Geological Survey registered No. NO76NE/8. 
Reference(s):
Auton, C A, Gordon, J E, Merritt, J W, and Walker, M J C. 2000. The glacial and interstadial sediments at the Burn of Benholm, Kincardineshire: evidence for onshore pre-Devensian ice movement in northeast Scotland. Journal of Quaternary Science. Vol. 15, 141-156. 
Campbell, R, 1934. On the occurrence of Shelly Boulder Clay and interglacial deposits in Kincardineshire. Transactions of the Edinburgh Geological Society, Vol.13, 176-183. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S067