Computer Code: |
QAS |
Preferred Map Code: |
QAS |
Status Code: |
Pending Upgrade |
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).] |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
S119
|