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. 2011. The Quaternary geology of the Solway. British Geological Survey Research Report, RR/11/04. 69pp. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S010 S010 S011 | |||