Willis Formation
(Pliocene) at surface, covers 24 % of this area Willis Formation
Alluvium
(Holocene) at surface, covers 11 % of this area Alluvium
Lissie Formation
(Quaternary; Middle Pleistocene) at surface, covers 8 % of this area Lissie Formation
Whitsett Formation
(Oligocene and Eocene) at surface, covers 3 % of this area Whitsett Formation
Terrace deposits
(Pleistocene and Holocene) at surface, covers 3 % of this area Terrace deposits
Deweyville Formation
(Quaternary; Pleistocene and Holocene?) at surface, covers 1.0 % of this area Deweyville Formation
Queen City Sand
(Eocene) at surface, covers < 0.1 % of this area Queen City Sand