| Computer Code: |
HAE |
Preferred Map Code: |
HaE |
| Status Code: |
Full |
| Age range: |
Early Devonian Epoch (DL)
— Early Devonian Epoch (DL) |
| Lithological Description: |
Interbedded sandstones and siltstones with tongues and lenses of breccia and conglomerate. |
| Definition of Lower Boundary: |
Unconformably lies on Moinian basement. |
| Definition of Upper Boundary: |
Not known - in fault contact with Qui Ayre Sandstone Formation. |
| Thickness: |
100m at Harra Ebb NY 215 148 Mainland, Orkney. |
| Geographical Limits: |
Orkney Islands. |
| Parent Unit: |
Yesnaby Sandstone Group (YES)
|
| Previous Name(s): |
Basal Breccia and Sandstone [Obsolete Name and Code: Use HAE]
(-4693)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Cliff section at Harra Ebb western Mainland Orkney. |
| 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
|
