Lissie Formation
(Quaternary; Middle Pleistocene) at surface, covers 41 % of this area Lissie Formation
Alluvium
(Holocene) at surface, covers 13 % of this area Alluvium
Willis Formation
(Pliocene) at surface, covers 3 % of this area Willis Formation
Deweyville Formation
(Quaternary; Pleistocene and Holocene?) at surface, covers 3 % of this area Deweyville Formation
Terrace deposits
(Pleistocene and Holocene) at surface, covers 1 % of this area Terrace deposits
Fleming Formation
(Miocene) at surface, covers < 0.1 % of this area Fleming Formation