|
|
|
| Surface Outcrops |
|
| Formation | Oldest age | Youngest Age | Formation | Oldest Known age |
| Benin/Afam Clay Member | Oligocene | Plio/Pleistocene | Benin | Miocene |
| Recent Agbada | Eocene | Miocene | Ogwashi-Asaba | Oligocene |
|
|
| Eocene | Ameki | Eocene |
| Recent Akata | Eocene | L. Eocene | Imo Shale | Paleocene |
|
|
| Palaeocene | Nsukka | Maestrichtian |
|
|
| Maestrichtian | Ajali | Maestrichtian |
| Equivalent not known | Cretaceous | Campanian | Mamu | Campanian |
|
|
| Campanian/Maeastchtian | Nkporo Shale | Santonian |
|
|
| Coniacian/ Santonian | Agwu Shale | Turonian |
|
|
| Turonian | Eze-Aku Shale | Turonian |
|
|
| Albian | Asu River Group | Albian |