| Computer Code: |
QAS |
Preferred Map Code: |
QAS |
| Status Code: |
Full |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
Lower unit of rusty-weathering, well-graded sandstone, overlain by pebbly bioturbated sandstone. |
| Definition of Lower Boundary: |
Faulted against Harra Ebb Formation. |
| Definition of Upper Boundary: |
Unconformably overlain by the Lower Stromness Flags Formation. |
| Thickness: |
150 metres on Qui Ayre coastline, Mainland Orkney [NY 220 153]. |
| Geographical Limits: |
Orkney Islands. |
| Parent Unit: |
Yesnaby Sandstone Group (YES)
|
| Previous Name(s): |
Yesnaby Sandstone Formation [Obsolete Name and Code: Use QAS]
(-4281)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Mykura W, 1976 British Regional Geology: Orkney and Shetland (HMSO, Edinburgh).] |
| 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.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S119
|
