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Geologic units in Maverick county, Texas

Uvalde Gravel (Pliocene to Pleistocene) at surface, covers 24 % of this area

Uvalde Gravel

Escondido Formation (Late Cretaceous; Gulfian Series) at surface, covers 23 % of this area

Escondido Formation

Kincaid Formation (Paleocene) at surface, covers 11 % of this area

Kincaid Formation

Leona Formation (Pleistocene) at surface, covers 9 % of this area

Leona Formation

Indio Formation (Paleocene to Eocene) at surface, covers 8 % of this area

Indio Formation

Olmos Formation (Late Cretaceous; Gulfian Series) at surface, covers 6 % of this area

Olmos Formation

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

Alluvium

San Miguel Formation (Late Cretaceous; Gulfian Series) at surface, covers 4 % of this area

San Miguel Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 4 % of this area

Terrace deposits

Carizzo Sand (Eocene) at surface, covers 2 % of this area

Carizzo Sand

Quaternary deposit, undivided (Quaternary) at surface, covers 2 % of this area

Quaternary deposit, undivided

Upson Clay (Late Cretaceous; Gulfian Series) at surface, covers 1 % of this area

Upson Clay

Austin Chalk (Late Cretaceous; Gulfian Series) at surface, covers 0.6 % of this area

Austin Chalk

Bigford Formation (Eocene) at surface, covers 0.5 % of this area

Bigford Formation