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Geologic units in Calhoun county, Texas

barrier island deposits (Phanerozoic | Cenozoic | Quaternary) at surface, covers 39 % of this area

barrier island deposits

Lithology: sand; silt

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

Beaumont Formation, areas predominantly clay

Lithology: clay or mud; silt

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 15 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

Beaumont Formation, areas predominantly sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 7 % of this area

Beaumont Formation, areas predominantly sand

Lithology: sand; silt; clay or mud; gravel

Deweyville Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene (?)) at surface, covers 1 % of this area

Deweyville Formation

Lithology: sand; silt; clay or mud

fill and spoil (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.9 % of this area

fill and spoil

Lithology: sand; silt; clay or mud

Lissie Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle) at surface, covers < 0.1 % of this area

Lissie Formation

Lithology: sand; silt; clay or mud

barrier ridge and barrier flat deposts (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers < 0.1 % of this area

barrier ridge and barrier flat deposts

Lithology: sand; silt; clay or mud