Geologic units in Fayette county, Texas

Fleming Formation (Miocene) at surface, covers 19 % of this area

Fleming Formation

Oakville Sandstone (Miocene) at surface, covers 18 % of this area

Oakville Sandstone

Yegua Formation (Middle Eocene) at surface, covers 11 % of this area

Yegua Formation

Alluvium (Holocene) at surface, covers 10 % of this area

Alluvium

Catahoula Formation (Oligocene) at surface, covers 8 % of this area

Catahoula Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 7 % of this area

Terrace deposits

Cadell Formation (Eocene) at surface, covers 6 % of this area

Cadell Formation

Manning Formation (Eocene) at surface, covers 5 % of this area

Manning Formation

Whitsett Formation (Oligocene and Eocene) at surface, covers 4 % of this area

Whitsett Formation

High gravel deposits (Pleistocene) at surface, covers 3 % of this area

High gravel deposits

Willis Formation (Pliocene) at surface, covers 3 % of this area

Willis Formation

Cook Mountain Formation (Eocene) at surface, covers 2 % of this area

Cook Mountain Formation

Wellborn Formation (Eocene) at surface, covers 2 % of this area

Wellborn Formation

Sparta Sand (Eocene) at surface, covers 0.3 % of this area

Sparta Sand

Weches Formation (Eocene) at surface, covers < 0.1 % of this area

Weches Formation