The BGS Lexicon of Named Rock Units — Result Details

Port Of Brims Sandstone Member

Computer Code: POBS Preferred Map Code: notEntered
Status Code: Full
Age range: Eifelian Age (DI) — Eifelian Age (DI)
Lithological Description: Prominent thick (>4m), cross-bedded sandstone units in a generally sandy sequence with lenticular bedding.
Definition of Lower Boundary: Conformable on the top of the uppermost green siltstone of the underlying Tang Sandstone Member.
Definition of Upper Boundary: Faulted against the Crosskirk Bay Formation by the Bridge of Forss Fault at Port of Brims.
Thickness: c.30m
Geographical Limits: Onshore and immediately offshore of the Dounreay area, Caithness, Northern Scotland. Geographical Map Scotland Sheet 115E.
Parent Unit: Mey Flagstone Formation (MEY)
Previous Name(s): Tang Sandstone Formation (-463)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  East side of Port of Brims to the Tang headland on the coastal outcrop c.7km northwest of Thurso, Caithness. Fletcher and Key, 1991. 
Reference(s):
Fletcher, T P and Key, R M. 1991. Solid geology of the Dounreay District. British Geological Survey Technical Report WA/91/35C. 
British Geological Survey. (In preparation, to be published in 2005). Bedrock geology. Scotland Special Sheet (Dounreay).1:25 000. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable