The BGS Lexicon of Named Rock Units — Result Details

Errol Clay Formation

Computer Code: ERRCL Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Massive to thinly bedded and coarsely laminated calcareous, silty and sandy clay interbedded with sand, commonly forming a fining-upwards sequence. Generally reddish brown, but locally brownish and yellowish grey or pale to dark grey. Streaks and mottling of dark grey to black sulphide are common and calcareous concretions occur towards the base locally. Contains a sparse glaciomarine fauna.
Definition of Lower Boundary: Unconformable, draped contact with underlying glaciofluvial sand and gravel or till.
Definition of Upper Boundary: Overlain conformably at the type section by dark grey clay of the Powgavie Clay Formation.
Thickness: To at least 12m
Geographical Limits: East coast and firths of Scotland from Berwick-upon-Tweed to Inverness.
Parent Unit: British Coastal Deposits Group (COAS)
Previous Name(s): Errol Beds (-892)
Alternative Name(s): Errol Member
Type Section  The former Inchcoonan Brick and Tile Works claypit, near Errol. Peacock., 1999 (fig 5) 
Peacock, J D. 1999. The pre-Windermere Interstadial (late Devensian) raised marine strata of eastern Scotland and their macrofauna: a review. Quaternary Science Reviews, Vol.18, 1655-1679. 
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable