The BGS Lexicon of Named Rock Units — Result Details
Skelgill Formation
| Computer Code: | SKB | Preferred Map Code: | SKB |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Rhuddanian Age (SR) — Aeronian Age (SA) | ||
| Lithological Description: | Laminated mudstone with calcareous laminae. Thin, impure limestone at base. | ||
| Definition of Lower Boundary: | Unconformably overlies the Red Gill Formation of the Dent Group. | ||
| Definition of Upper Boundary: | Conformably overlain by the Browgill Formation. | ||
| Thickness: | 20m+ | ||
| Geographical Limits: | Southern Lake District and northwest Pennines. | ||
| Parent Unit: | Stockdale Group (STK) | ||
| Previous Name(s): | Skelgill Member [Obsolete Name and Code: Use SKB]
(-4885)
Skelgill Shales [Obsolete Name And Code: Use SKB] (SGSH) Graptiliferous Mudstones [Obsolete Name and Code: Use SKB] (-1184) Skelgill Beds [Obsolete Name and Code: Use SKB] (-1823) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Holbeck Gill, upstream from High Skelgill Farm. | ||
| Reference(s): | |||
| Millward, D, and Stone, P. 2012. Stratigraphical framework for the Ordovician and Silurian sedimentary strata of northern England and the Isle of Man. British Geological Survey Research Report, RR/12/04. 119pp. | |||
| Harkness, R and Nicholson, H A, 1877. On the strata and their fossil contents between the Borrowdale Series of the north of England and the Coniston Flags. Quarterly Journal of the Geological Society of London, Vol.33, p.461-484. | |||
| Moseley F. 1984. Lower Palaeozoic lithostratigraphical classification in the English Lake District. Geological Journal, Vol. 19, p. 239-247. | |||
| 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.) | |||
| Marr, J E and Nicholson, H A, 1888. The Stockdale Shales. Quarterly Journal of the Geological Society of London, Vol.44, p.654-732. | |||
| Hutt, J E, 1974. The Llandovery graptolites of the English Lake District Pt.1. Palaeontographical Society Monograph No.540, p.1-56. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E038 E039 E031 | |||