The BGS Lexicon of Named Rock Units — Result Details

Haist Pebbly Sandstone Member

Computer Code: HAT Preferred Map Code: Hat
Status Code: Full
Age range: Givetian Age (DV) — Givetian Age (DV)
Lithological Description: Well-cemented fine-, medium- and evenly coarse-grained sandstone, with sporadic granule and clay intraclasts and pebbly horizons.
Definition of Lower Boundary: Slightly unconformable on Lyre Geo Sandstone Member; base marked by grade-laminated sandstones.
Definition of Upper Boundary: Top marked by grade-laminated sandstones at top of pebble-bearing sandstone sequence.
Thickness: 195m at Regal Burn ND 2804 9803 to ND 2937 9756, Hoy Island, Orkney.
Geographical Limits: Orkney Islands.
Parent Unit: Hoy Sandstone Formation (HOY)
Previous Name(s): Haist Sandstone Member (-1585)
Alternative Name(s): none recorded or not applicable
Type Section  Stream section in Regal Burn, 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:
S119 S117