| Computer Code: |
SCAB |
Preferred Map Code: |
symb |
| Status Code: |
Full |
| Age range: |
Tonian Period (AT)
— Tonian Period (AT) |
| Lithological Description: |
Quartzite, medium-grained, well-bedded. Locally feldspathic. Rare layers psammite and semipelite. |
| Definition of Lower Boundary: |
Not exposed, but assumed to be conformably overlying the Suisgill Semipelite Formation (SUIS). |
| Definition of Upper Boundary: |
Stratigraphic top not exposed. Unconformably overlain by Old Red Sandstone (ORS). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Northern Highlands: East Sutherland and Caithness. Restricted to the Skinsdale Nappe. |
| Parent Unit: |
Loch Eil Group (LEIL)
|
| Previous Name(s): |
Scaraben Quartzite [Obsolete Name and Code: Use SCAB]
(-1165)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Scaraben mountain [ND 080 270]. |
| Reference Section |
Berriedale Water [ND 107 277]. |
| Reference(s): |
| Krabbendam, M. 2021. A stratigraphic framework for the early Neoproterozoic successions of the Northern Highlands of Scotland. UK Stratigraphic Framework Series. British Geological Survey Open Report, OR/21/072. 86pp. |
| Strachan, R A, 1989. The metamorphic rocks of the Scaraben area, East Sutherland and Caithness. Scottish Journal of Geology, Vol.24, 1-13. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S109
S109
S110
|
