The BGS Lexicon of Named Rock Units — Result Details

Hoy Sandstone Formation

Computer Code: HOY Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Givetian Age (DV) — Frasnian Age (DR)
Lithological Description: Red, pink, and yellow sandstones with subordinate bands of marl. Many exhibit current bedding and trace fossils.
Definition of Lower Boundary: Drawn at the conformable upward passage from the Hoy Volcanics Formation or at the base of sandstones with subordinate bands of marl, where they rest unconformably on the Lower Eday Sandstone Formation.
Definition of Upper Boundary: The formation is not overlain.
Thickness: c.1000m
Geographical Limits: Hoy, Orkney.
Parent Unit: Eday Group (EDY)
Previous Name(s): Hoy Sandstones (-4100)
Hoy Sandstone Group [Obsolete Name And Code: Use OYS] (-4828)
Alternative Name(s): Replaced By Orkney Sandstone Group
Stratotypes:
Type Area  Hoy, Orkney. 
Reference(s):
Geikie, A, 1879. On the Old Red Sandstone of Western Europe. Transactions of the Royal Society of Edinburgh, Vol.28, p.374-404. 
Wilson, G V and others. 1935. The Geology of the Orkneys. Memoir of the Geological Survey of Scotland. 
Miller, H. 1849. Footprints of the Creator. 
McAlpine, A, 1978. The Upper Old Red Sandstone of Orkney, Caithness and adjacent areas. PhD Thesis, University of Newcastle-upon-Tyne. 
Mykura W, 1976 British Regional Geology: Orkney and Shetland (HMSO, Edinburgh).] 
Murchison, R I, 1859. Northern Highlands, etc. Quarterly Journal of the Geological Society, Vol.15, p.394,409. 
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. 
Malcolmson, J G. 1859. Old Red Sandstone. Quarterly Journal of the Geological Society of London. Vol.15, p351. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S117