The BGS Lexicon of Named Rock Units — Result Details
Eday Group
Computer Code: | EDY | Preferred Map Code: | Edy |
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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): | Hoy Sandstone [Obsolete Name and Code: Use EDY]
(-1521)
Eday Beds [Obsolete Name and Code: Use EDY] (-1520) Orkney Sandstone Group [Obsolete Name And Code: Use EDY] (OYS) Eday Sandstones [Obsolete Name and Code: Use EDY] (-2169) |
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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).] | |||
Flett J S, 1898. The Old Red Sandstone of the Orkneys. Transactions of the Royal Society of Edinburgh, Vol 39, p.385. | |||
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. BGS Technical Report WA/96/39R. | |||
Wilson, G V and others. 1935. The Geology of the Orkneys. Memoir of the Geological Survey of Scotland. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S119 S119 S116 S116 S117 S117 S120 S121 S122 S115 |