| Computer Code: |
BYF |
Preferred Map Code: |
notEntered |
| Status Code: |
Pending Upgrade |
| Age range: |
Mid Devonian Epoch (DM)
— Late Devonian Epoch (DU) |
| Lithological Description: |
Sandstone with subsidiary calcareous mudstone and siltstone and trace conglomerate and pebbly (gravelly) sandstone. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
Sumburgh Group (SUMH)
|
| Previous Name(s): |
Bressay Flagstones [Obsolete Name and Code: Use BYF]
(-3888)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S126
S128
|
