The BGS Lexicon of Named Rock Units — Result Details

Lyre Geo Sandstone Member

Computer Code: LYR Preferred Map Code: Lyr
Status Code: Full
Age range: Givetian Age (DV) — Givetian Age (DV)
Lithological Description: Poorly-cemented pale greyish-orange sandstone with thin pale olive mudstones.
Definition of Lower Boundary: Gradational contact with Lang Geo Sandstone Member.
Definition of Upper Boundary: Unconformably overlain by Haist Pebbly Sandstone Member.
Thickness: 65m at Lyre Geo HY 265 023, Hoy Island, Orkney.
Geographical Limits: Orkney Islands.
Parent Unit: Hoy Sandstone Formation (HOY)
Previous Name(s): Lyre Geo Sandstone Formation (-4175)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Cliff section at Lyre Geo, Hoy Island, Orkney. 
Reference(s):
McAlpine, A, 1978. The Upper Old Red Sandstone of Orkney, Caithness and adjacent areas. PhD Thesis, University of Newcastle-upon-Tyne. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S117 S119