Lithostratigraphy
Permian
Devonian
Ordovician
| Darriwilian | Goldwyer formation |
| Floian | Gap Creek formation Emanuel formation (Tremadoc – Floian) |
| Tremadoc | Emanuel formation (Tremadoc – Floian) |
Cambrian
| Guzhangian | Skewthorpe formation |
| Wuliuan | Tindall limestone (Cambrian stage 2 – Wuliuan) |
| Cambrian stage 4 | Tindall limestone (Cambrian stage 2 – Wuliuan) |
| Cambrian stage 3 | Tindall limestone (Cambrian stage 2 – Wuliuan) |
| Cambrian stage 2 | Tindall limestone (Cambrian stage 2 – Wuliuan) |