The BGS Lexicon of Named Rock Units — Result Details

Eglinton Shelly Till Member

Computer Code: ESHTI Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Pinkish brown, very stiff, pebbly sandy silty clay diamicton containing clasts of local sandstone, mudstone, coal and dolerite, far travelled sedimentary, igneous and metamorphic rocks and shell fragments, including sparse paired valves of marine molluscs yielding Late Devensian amino acid ratios. (Described as being similar to the shelly lodgement tills of Ayrshire, but probably a deformation till).
Definition of Lower Boundary: Sharp, unconformable, planar to gently undulating contact with dark brown, laminated organic silt and clay of the Sourlie Organic Silt Formation.
Definition of Upper Boundary: Sharp, convex-up, undulose unconformity with overlying dark grey silty sandy stony clay diamicton of the Auchenwinsey Till Member.
Thickness: To 3.5m
Geographical Limits: West central Scotland.
Parent Unit: Wilderness Till Formation (WITI)
Previous Name(s): Unit E (-1530)
Alternative Name(s): Eglinton Member
Stratotypes:
Type Section  Former Sourlie Opencast Coal Site, excavated into the northeast side of Sourlie Hill, 3.5km northeast of Irvine, Ayrshire. Jardine,et al.,1988. 
Reference(s):
Jardine, W G, Dickson, J H, Haughton, P D W, Harkness, D D, Bowen, D Q and Sykes, G A. 1988. A late Middle Devensian interstadial site at Sourlie, near Irvine, Strathclyde. Scottish Journal of Geology, Vol.24, 288-295. 
Bos, J A A, Dickson, J H, Coope, G R and Jardine, W G. 2004. Flora, fauna and climate change of Scotland during the Weichselian Middle Pleniglacial - palynological, macrofossil and coleopteran investigations. Palaeogeography, Palaeoclimatology and Palaeoecology, Vol.204, 65-100. 
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