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Geologic units in Lee county, Texas

Yegua Formation (Middle Eocene) at surface, covers 20 % of this area

Yegua Formation

Cook Mountain Formation (Eocene) at surface, covers 16 % of this area

Cook Mountain Formation

Sparta Sand (Eocene) at surface, covers 13 % of this area

Sparta Sand

Calvert Bluff Formation (Paleocene to Eocene) at surface, covers 11 % of this area

Calvert Bluff Formation

Queen City Sand (Eocene) at surface, covers 8 % of this area

Queen City Sand

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

Weches Formation

Alluvium (Holocene) at surface, covers 5 % of this area

Alluvium

High gravel deposits (Pleistocene) at surface, covers 4 % of this area

High gravel deposits

Cadell Formation (Eocene) at surface, covers 4 % of this area

Cadell Formation

Carizzo Sand (Eocene) at surface, covers 3 % of this area

Carizzo Sand

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

Manning Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 2 % of this area

Terrace deposits

Hooper Formation (Paleocene) at surface, covers 2 % of this area

Hooper Formation

Simsboro Formation (Paleocene) at surface, covers 1 % of this area

Simsboro Formation

Wellborn Formation (Eocene) at surface, covers 1 % of this area

Wellborn Formation

Reklaw Formation (Eocene) at surface, covers 1 % of this area

Reklaw Formation