| Computer Code: |
SKRY |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Sinemurian Age (JS)
— Pliensbachian Age (JE) |
| Lithological Description: |
The term Skerry Group was introduced by Ritchie et al. (1996) for a succession of Lower Jurassic shallow marine deposits within the North Rona Basin that lie below the Humber Group. The Skerry Group comprises the Stack Skerry and Sule Skerry formations. |
| Definition of Lower Boundary: |
The base of the group has not been penetrated. |
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
The Skerry Group attains a maximum, unbottomed, drilled thickness of 770 m within the North Rona Basin. |
| Geographical Limits: |
The distribution of the Skerry Group appears very restricted within the west of Shetland area although it may be present at depth within the Faeroe-Shetland Basin and to the south of the study area in the North Lewis and North Minch basins (Stoker et al., 1993). |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Richards, P C, Lott, G K, Johnson, H, Knox, R W O'B. and Riding, J B. 1993. 3. Jurassic of the Central and Northern North Sea. In: Knox, R W O'B and Cordey, W G (eds.). Lithostratigraphic nomenclature of the UK North Sea. British Geological Survey, Nottingham. |
| Stoker, M S, Hitchen, K, and Graham, C C. 1993. United Kingdom offshore regional report: the geology of the Hebrides and West Shetland shelves and adjacent deep-water areas. (London: HMSO for the British Geological Survey.) |
| Morton, N, Smith, R M, Golden, M, and James, A V. 1987. Comparative stratigraphic study of Triassic-Jurassic sedimentation and basin evolution in the northern North Sea and north-west of the British Isles. In: Brooks, J, and Glennie, K W (eds.) Petroleum geology of North-West Europe, (London: Graham and Trotman), 751-763. |
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) |
| Ritchie, J D, Gatliff, R W and Riding, J, 1996. 1. Pre - Tertiary lithostratigraphy. In: Stratigraphic Nomenclature of the UK North West Margin. British Geological Survey, Nottingham. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
