The BGS Lexicon of Named Rock Units — Result Details
Lanark Sandstone Formation [Obsolete: use SWAS]
| Computer Code: | LKSF | Preferred Map Code: | LKSF |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Early Devonian Epoch (DL) — Early Devonian Epoch (DL) | ||
| Lithological Description: | [Obsolete: use SWAS] Mainly red-brown or purple sandstones, well-bedded, cross-stratified, micaceous, in some cases pebbly (lithic arenites), with subordinate red-brown silty mudstone ribs and conglomerate beds. | ||
| Definition of Lower Boundary: | Junction with underlying Greywacke Conglomerate, or unconformable overlap onto Silurian strata. | ||
| Definition of Upper Boundary: | Unconformity at base of 'Upper Devonian' strata. | ||
| Thickness: | c.1800m, estimated from outcrop width. | ||
| Geographical Limits: | 1:50k Sheet 23, north-west of Carmichael, Lesmahagow to Lanark to Carstairs area. | ||
| Parent Unit: | none recorded or not applicable | ||
| Previous Name(s): | Lower Old Red Sandstone Group
(LORS)
Lower Old Red Sandstone Group (LORS) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Sections along the River Clyde between Hazelbank and New Lanark. | ||
| Reference(s): | |||
| MacPherson, K A T, Paterson, I B and Mc Adam, A D. 1998. Geology of the Hamilton district. Memoir of the Geological Survey, Sheet 23W (Scotland). | |||
| Browne, M A E, Smith, R A, and Aitken, A M. 2002. Stratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. British Geological Survey Research Report RR/01/04. 67 pp. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S023 | |||