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
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. 
British Geological Survey. (In preparation, to be published in 2005). Bedrock geology. Scotland Special Sheet (Dounreay).1:25 000. 
Fletcher, T P and Key, R M. 1991. Solid geology of the Dounreay District. British Geological Survey Technical Report WA/91/35C. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable