Geologic units in Liberty county, Texas

Beaumont Formation, areas predominantly sand (Quaternary; Late Pleistocene) at surface, covers 37 % of this area

Beaumont Formation, areas predominantly sand

Beaumont Formation, areas predominantly clay (Quaternary; Late Pleistocene) at surface, covers 19 % of this area

Beaumont Formation, areas predominantly clay

Lissie Formation (Quaternary; Middle Pleistocene) at surface, covers 17 % of this area

Lissie Formation

Deweyville Formation (Quaternary; Pleistocene and Holocene?) at surface, covers 12 % of this area

Deweyville Formation

Alluvium (Holocene) at surface, covers 11 % of this area

Alluvium

Deweyville Formation with higher level? (Quaternary; Pleistocene and Holocene?) at surface, covers 4 % of this area

Deweyville Formation with higher level?

Fleming Formation (Miocene) at surface, covers 0.3 % of this area

Fleming Formation

Willis Formation (Pliocene) at surface, covers < 0.1 % of this area

Willis Formation