The BGS Lexicon of Named Rock Units — Result Details

Sandside Bay Formation [Obsolete: use SBSM]

Computer Code: SABA Preferred Map Code: notEntered
Status Code: Full
Age range: Eifelian Age (DI) — Eifelian Age (DI)
Lithological Description: [Obsolete: use SBSM] Sandstone-dominated cyclic sequence with siltstone and calcareous (fish bed) laminite limestones.
Definition of Lower Boundary: Top of the Fresgoe Sandstone Member [qv] of the Bighouse Formation.
Definition of Upper Boundary: Top of uppermost medium-grained cross-bedded sandstone, below the Dounreay Shore Formation [qv].
Thickness: 90m
Geographical Limits: Onshore and immediately offshore of the Dounreay area, Caithness, Northern Scotland.
Parent Unit: none recorded or not applicable
Previous Name(s): Bay Sandstone Member [Obsolete Name and Code: Use SABA, SBSM] (-4310)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Eastern side of Sandside Bay, c. 200 to 500 m north of the mouth of the Burn of Isauld (shown as the Achvarasdal Burn on OS 50k map) c. 800 m north of the centre of the village of Reay, Caithness. 
Reference(s):
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