Lithostratigraphy
Ordovician
| Darriwilian | Valhallfonna formation (Floian – Darriwilian) |
| Dapingian | Valhallfonna formation (Floian – Darriwilian) Valhalfonna formation (Floian – Dapingian) |
| Floian | Valhallfonna formation (Floian – Darriwilian) Kirtonryggen formation (Tremadoc – Floian) Valhalfonna formation (Floian – Dapingian) |
| Tremadoc | Kirtonryggen formation (Tremadoc – Floian) |
Cambrian
Not placed in stage
Tokammane formation (Lower Cambrian)