Litostratigrafie
Terciér
| Akvitan | Lincoln Creek formation (Priabon – Akvitan) |
| Chatt | Lincoln Creek formation (Priabon – Akvitan) |
| Rupel | Lincoln Creek formation (Priabon – Akvitan) |
| Priabon | Chuckanut formation (Seland – Priabon) Lincoln Creek formation (Priabon – Akvitan) |
| Barton | Chuckanut formation (Seland – Priabon) |
| Lutet | Chuckanut formation (Seland – Priabon) |
| Ypres | Chuckanut formation (Seland – Priabon) Nanjemoy formation |
| Thanet | Chuckanut formation (Seland – Priabon) |
| Seland | Chuckanut formation (Seland – Priabon) |