The BGS Lexicon of Named Rock Units — Result Details

Fairlie Sandstone Formation

Computer Code: FAS Preferred Map Code: FaS
Status Code: Full
Age range: Late Devonian Epoch (DU) — Late Devonian Epoch (DU)
Lithological Description: White or cream, fine-grained, cross-bedded and finely laminated sandstones with beds of cross-bedded sandstone containing quartz pebbles.
Definition of Lower Boundary: A transitional boundary drawn at the base of the white or cream sandstones of the Fairlie Sandstone Formation where it rests conformably on the red-brown sandstones of the Kelly Burn Sandstone Formation.
Definition of Upper Boundary: Drawn at the unconformity from the white or cream sandstones of the Fairlie Sandstone Formation to the lava of the Clyde Plateau Volcanic Formation, or locally the Kinnesswood Formation.
Thickness: Approximately 300 m thick.
Geographical Limits: East of the Largs Fault Zone, Strathclyde, Scotland, sheets 29, 21, 22W.
Parent Unit: Stratheden Group (SAG)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Area around Fairlie Glen, Strathclyde, Scotland. 
Reference(s):
Browne, M A E, Smith, R A and Aitken, A M. 2001. A lithostratigraphical framework for the Devonian (Old Red Sandstone) rocks of Scotland south of a line from Fort William to Aberdeen. Version 3. British Geological Survey Research Report RR/01/04. 
Paterson, I B and Hall, I H S, 1986. Lithostratigraphy of the late Devonian and early Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Report, 18/3. 
Paterson, I B, Hall, I H S & Stephenson, D. 1990. Geology of the Greenock district: Memoir for 1:50000 geological sheet 30W and part of sheet 29E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S030 S029 S022 S021