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
Stratotypes:
Type Section  Stream section in Regal Burn, 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:
S119 S117