Geologic units in Angelina county, Texas

Yegua Formation (Middle Eocene) at surface, covers 36 % of this area

Yegua Formation

Alluvium (Holocene) at surface, covers 17 % of this area

Alluvium

Cadell Formation (Eocene) at surface, covers 14 % of this area

Cadell Formation

Manning Formation (Eocene) at surface, covers 13 % of this area

Manning Formation

Cook Mountain Formation (Eocene) at surface, covers 10 % of this area

Cook Mountain Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 3 % of this area

Terrace deposits

Wellborn Formation (Eocene) at surface, covers 3 % of this area

Wellborn Formation

Whitsett Formation (Oligocene and Eocene) at surface, covers 2 % of this area

Whitsett Formation

Sparta Sand (Eocene) at surface, covers 1 % of this area

Sparta Sand

Catahoula Formation (Oligocene) at surface, covers 1 % of this area

Catahoula Formation