The BGS Lexicon of Named Rock Units — Result Details
Forres Sandstone Group
| Computer Code: | FSA | Preferred Map Code: | FSa |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Givetian Age (DV) — Tournaisian Age (CT) | ||
| Lithological Description: | Red-bed sandstones with rare siltstones, some pebbly beds and 'cornstones'. | ||
| Definition of Lower Boundary: | Disconformity at base of Nairn Sandstone on Inverness Sandstone Group beds. Base is transgressive onto metamorphic basement. | ||
| Definition of Upper Boundary: | At the change in facies from red beds to marine sedimentary rocks. | ||
| Thickness: | About 1000 m thick. | ||
| Geographical Limits: | Ardersier to Spey Bay (near Buckie) | ||
| Parent Unit: | Old Red Sandstone Supergroup (ORS) | ||
| Previous Name(s): | Findhorn Sandstone Group [Obsolete Name and Code: Use FSA]
(-4658)
Upper Old Red Sandstone (UORS) Upper Old Red Sandstone (UORS) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Outcrops between Ardersier/Nairn and Buckie, southern side of Moray Firth. Component formations: Nairn Sandstone, Whitemire-Bogside(Edenkillie) Beds, Alves Beds, Scaat Craig Beds, Cornstone Beds and Rosebrae Beds. | ||
| Reference(s): | |||
| Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). | |||
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S084 S085 S085 S095 S094 S094 S084 | |||