| Computer Code: |
CNFL |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Eifelian Age (DI)
— Eifelian Age (DI) |
| Lithological Description: |
Flagstone, rhythmic mudstone-limestone, siltstone, sandstone units. NOTE: See component formations for Type Sections. |
| Definition of Lower Boundary: |
Top of red bed sandstones of Yesnaby Sandstone Group in Orkney and of Sarclet Group in Caithness. |
| Definition of Upper Boundary: |
Base of yellowish brown sandstones of the Orkney Sandstone Group . |
| Thickness: |
+ 2000m. |
| Geographical Limits: |
Orcadian Basin - Shetland to Moray Firth, Northern Scotland. |
| Parent Unit: |
Old Red Sandstone Supergroup (ORS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Donovan, R N, Foster, R J and Westoll, T S. 1974. A stratigraphical revision of the Old Red Sandstone of north-eastern Caithness. Transactions of the Royal Society of Edinburgh, Vol.69, p.167-201. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S109
S109
S110
S115
S115
S116
S116
S117
S117
S119
S119
S120
S121
S122
|
