The BGS Lexicon of Named Rock Units — Result Details
Eday Group
| Computer Code: | EDY | Preferred Map Code: | Edy |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Givetian Age (DV) — Frasnian Age (DR) | ||
| Lithological Description: | Comprises yellow sandstones with thin fossiliferous flags below and red and unfossiliferous above. Containing one volcanic horizon. | ||
| Definition of Lower Boundary: | Drawn at the base of the Lower Eday Sandstone Formation where it rests conformably upon the Rousay Member of the Upper Stromness Flagstone Formation. | ||
| Definition of Upper Boundary: | Not overlain: highest Group in the Orkney Islands. | ||
| Thickness: | c.1300m | ||
| Geographical Limits: | Orkney Islands. | ||
| Parent Unit: | Old Red Sandstone Supergroup (ORS) | ||
| Previous Name(s): | Orkney Sandstone Group [Obsolete Name And Code: Use EDY]
(OYS)
Eday Sandstones [Obsolete Name and Code: Use EDY] (-2169) Hoy Sandstone [Obsolete Name and Code: Use EDY] (-1521) Eday Beds [Obsolete Name and Code: Use EDY] (-1520) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Eday and Eday Sound. | ||
| Reference(s): | |||
| Mykura W, 1976 British Regional Geology: Orkney and Shetland (HMSO, Edinburgh).] | |||
| Wilson, G V and others. 1935. The Geology of the Orkneys. Memoir of the Geological Survey of Scotland. | |||
| Fletcher, T P. 1996, A review of the lithostratigraphy of the Old Red Sandstone Supergroup in Scotland north of a line from Fort William to Aberdeen. British Geological Survey Technical Report WA/96/39R. | |||
| 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.) | |||
| Flett J S, 1898. The Old Red Sandstone of the Orkneys. Transactions of the Royal Society of Edinburgh, Vol. 39, 385. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S119 S119 S116 S116 S117 S117 S120 S121 S122 S115 | |||