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Geologic units in Willacy county, Texas

Additional scientific data in this geographic area

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

in Rio Grande delta area, clay veneer over meanderbelt sand (Phanerozoic | Cenozoic | Quaternary) at surface, covers 24 % of this area

in Rio Grande delta area, clay veneer over meanderbelt sand

Lithology: clay or mud; sand

Goliad Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 16 % of this area

Goliad Formation

Beaumont Formation, areas predominantly sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 8 % 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 4 % of this area

Lissie Formation

Lithology: sand; silt; clay or mud

clay dune (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 4 % of this area

clay dune

Lithology: sand; silt; clay or mud

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

sand dune deposits

Lithology: sand; silt

barrier ridge and barrier flat deposts (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 1 % of this area

barrier ridge and barrier flat deposts

Lithology: sand; silt; clay or mud

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.6 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

dune sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.3 % of this area

dune sand sheet deposits

Lithology: sand; silt

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.2 % of this area

sand sheet deposits

Lithology: sand; silt

fill and spoil (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.2 % of this area

fill and spoil

Lithology: sand; silt; clay or mud