The BGS Lexicon of Named Rock Units — Result Details

Strathlethan Sandstone Member

Computer Code: SNF Preferred Map Code: SNF
Status Code: Full
Age range: Silurian Period (S) — Early Devonian Epoch (DL)
Lithological Description: A grey, fine-grained, cross-bedded sandstone, volcaniclastic sandstones and pebbly sandstones.
Definition of Lower Boundary: At the base of the lowest volcaniclastic sandstone bed resting on the Downie Point Conglomerate Member.
Definition of Upper Boundary: The base of the lowest coarse conglomerate bed in the Castle Haven Conglomerate Member.
Thickness: Up to 350 m thick, according to Armstrong and Paterson 1970.
Geographical Limits: Stonehaven area.
Parent Unit: Dunnottar Castle Conglomerate Formation (DRCC)
Previous Name(s): Strathlethan Sandstone Formation (-3040)
Strathlethan Formation (-534)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Coastal exposures in Strathlethan Bay, south of Stonehaven. 
Reference(s):
Armstrong, M and Paterson, I B, 1970. The Lower Old Red Sandstone of the Strathmore Region. Report of the Institute of Geological Sciences No.70/12 
Carroll, S, 1994. Geology of the Stonehaven District. 1:10 000 Sheets NO88NW, NO88NE, NO88SW and NO88SE. British Geological Survey Technical Report WA/94/19. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S067