Age

Geological Unit

Lithology

Quaternary

-Alluvium (general) freshwater back swamp meander belt.

-Gravel, sand, clay, silt,

-Mangrove and salt water

-Silt, clay and sand

-Back Swamps

-Medium fine sand and silt

-Active/Abandoned Beach ridges Sombreiro Warri Deltaic plain

-Fine sand, silt and clay

Miocene

Benin Formation (Coastal plain sand)

-Coarse to medium grain sand with subordinate silt and clay lenses, fluviatile marine

Eocene

Agbada Formation

-Mixture of sand, clay and silt, fluviatile marine