The BGS Lexicon of Named Rock Units — Result Details

Lang Geo Sandstone Member

Computer Code: LGE Preferred Map Code: LGe
Status Code: Full
Age range: Givetian Age (DV) — Givetian Age (DV)
Lithological Description: Rhythmic pale greyish red sandstones with subordinate siltstone and mudstone; pale green reduction spots common throughout.
Definition of Lower Boundary: Conformable on Hoy Volcanic Formation or unconformably resting on the Lower Eday Sandstone Formation.
Definition of Upper Boundary: Gradational boundary with poorly-cemented pale greyish orange sandstones of the Lyre Geo Sandstone Member.
Thickness: 24m at Lang Geo (ND 1841 9912), Hoy Island, Orkney.
Geographical Limits: Orkney Islands.
Parent Unit: Hoy Sandstone Formation (HOY)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Cliff section at Lang Geo, Hoy Island, Orkney. 
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 S117