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Geologic units in Refugio county, Texas

Beaumont Formation, areas predominantly clay (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 36 % of this area

Beaumont Formation, areas predominantly clay

Lithology: clay or mud; silt

Beaumont Formation, areas predominantly sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 28 % of this area

Beaumont Formation, areas predominantly sand

Lithology: sand; silt; clay or mud; gravel

Lissie Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle) at surface, covers 21 % of this area

Lissie Formation

Lithology: sand; silt; clay or mud

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 8 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 2 % of this area

Terrace deposits

barrier island deposits (Phanerozoic | Cenozoic | Quaternary) at surface, covers 2 % of this area

barrier island deposits

Lithology: sand; silt

Deweyville Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene (?)) at surface, covers 0.3 % of this area

Deweyville Formation

Lithology: sand; silt; clay or mud