The BGS Lexicon of Named Rock Units — Result Details

Langholm Till Formation

Computer Code: LHTI Preferred Map Code: LANG
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Stiff, pale yellowish brown to pale grey, stoney, sandy silty clay diamicton containing subangular to subrounded clasts of greywacke sandstone and siltstone, and other rocks cropping out in the Southern Uplands.
Definition of Lower Boundary: Unconformable on bedrock or older Quaternary deposits.
Definition of Upper Boundary: At the land surface or conformable with younger Quaternary deposits.
Thickness: Less than 15m
Geographical Limits: Southern Uplands of Scotland.
Parent Unit: Southern Uplands Glacigenic Subgroup (SUDR)
Previous Name(s): Boulder Clay (BOC)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  River cliff on the southern side of the Hoghill Burn, 1km upstream of Hoghill Farm. Merritt et al., in preparation 
Reference(s):
McMillan, A A, Merritt, J W, Auton, C A and Golledge, N R [In preparation]. The Quaternary geology of the Solway area. BGS Research Report. 
Lumsden G I, Tulloch W, Howells M F and Davies A. 1967. The geology of the neighbourhood of Langholm. Memoir of the Geological Survey, Sheet 11 (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S010 S010 S011