Goliad Formation
Sand sheet deposits
Dune sand sheet deposits
Lissie Formation
Alluvium in Rio Grande, subdivided into areas predominantly of sand
Alluvium in Rio Grande, subdivided into areas predominantly of clay
Beaumont Formation, areas predominantly clay
In Rio Grande delta area, clay veneer over meanderbelt sand
Beaumont Formation, areas predominantly sand
Terrace deposits
Clay dune
Alluvium