| Computer Code: |
BONA |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
| Lithological Description: |
Contact metamorphosed laminated semipelite and quartzite, latter locally cross-bedded. |
| Definition of Lower Boundary: |
Stratigraphic contact with underlying Gwalchmai Formation (GWALC). |
| Definition of Upper Boundary: |
Unconformably overlain by Ordovician rocks, eg. Llyn Alaw Group (ALAW). |
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
Anglesey. |
| Parent Unit: |
Llynn Maelog Group (LMG)
|
| Previous Name(s): |
none recorded or not applicable
|
| 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: |
| none recorded or not applicable |
