| Computer Code: |
TANG |
Preferred Map Code: |
TANG |
| Status Code: |
Full |
| Age range: |
Eifelian Age (DI)
— Eifelian Age (DI) |
| Lithological Description: |
Alternating quartzose, medium-grained sandstone units less than 1m thick with greenish siltstone interbeds; minor grey silty mudstone (not laminated) with fossil fish (Millerosteus minor). |
| Definition of Lower Boundary: |
Conformable on the uppermost dolomitic laminite-limestone of the Brims Castle Dolomitic Limestone Member. |
| Definition of Upper Boundary: |
Conformable beneath Port of Brims Sandstone Member at the base of the first thick (>4m), cross-bedded sandstone unit. |
| Thickness: |
100m |
| Geographical Limits: |
Onshore and immediate offshore of Dounreay area, Caithness, Northern Scotland. |
| Parent Unit: |
Mey Flagstone Formation (MEY)
|
| Previous Name(s): |
Tang Sandstone Formation [Obsolete Name and Code: Use POBS, TANG]
(-463)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Coastal section east of Brims Castle, to the east of the Tang headland (c. 7.5 km 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. |
| Donovan, R N, Foster, R J and Westoll, T S. 1974. A stratigraphical revision of the Old Red Sandstone of north-eastern Caithness. Transactions of the Royal Society of Edinburgh, Vol.69, p.167-201. |
| 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: |
|
S115
|
