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Geologic units in Orange county, Texas

Beaumont Formation, areas predominantly sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 55 % of this area

Beaumont Formation, areas predominantly sand

Lithology: sand; silt; clay or mud; gravel

Beaumont Formation, areas predominantly clay (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 23 % of this area

Beaumont Formation, areas predominantly clay

Lithology: clay or mud; silt

Deweyville Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene (?)) at surface, covers 12 % of this area

Deweyville Formation

Lithology: sand; silt; clay or mud

barrier island deposits (Phanerozoic | Cenozoic | Quaternary) at surface, covers 4 % of this area

barrier island deposits

Lithology: sand; silt

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 3 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

fill and spoil (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 1 % of this area

fill and spoil

Lithology: sand; silt; clay or mud

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

Deweyville Formation with higher level?

Lithology: clay or mud; silt

Chenier Plain, Saline Marsh (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers < 0.1 % of this area

gray to brown to black clay and silt of moderate organic content.

Lithology: clay or mud; silt

Alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers < 0.1 % of this area

gray to brownish gray clay and silty clay, reddish brown in the Red River Valley, some sand and gravel locally.

Lithology: clay or mud; sand; gravel