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 [Obsolete Name and Code: Use TILL]
(BOC)
Boulder clay [Obsolete Name and Code: Use TILL] (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): | |||
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). | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S010 S010 S011 |