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Geologic units in Refugio county, Texas

Lissie Formation (Quaternary; Middle Pleistocene) at surface, covers 33 % of this area

Lissie Formation

Beaumont Formation, areas predominantly sand (Quaternary; Late Pleistocene) at surface, covers 30 % of this area

Beaumont Formation, areas predominantly sand

Beaumont Formation, areas predominantly clay (Quaternary; Late Pleistocene) at surface, covers 28 % of this area

Beaumont Formation, areas predominantly clay

Alluvium (Holocene) at surface, covers 6 % of this area

Alluvium

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

Terrace deposits

Barrier island deposits (Quaternary) at surface, covers 1 % of this area

Barrier island deposits

Deweyville Formation (Quaternary; Pleistocene and Holocene?) at surface, covers 0.2 % of this area

Deweyville Formation