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Geologic units in Jim Hogg county, Texas

dune sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 54 % of this area

dune sand sheet deposits

Lithology: sand; silt

sand sheet deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 29 % of this area

sand sheet deposits

Lithology: sand; silt

Goliad Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 15 % of this area

Goliad Formation

Jackson Group, undivided (Phanerozoic | Cenozoic | Tertiary | Eocene Oligocene) at surface, covers 3 % of this area

Jackson Group, undivided

sand dune deposits (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 0.5 % of this area

sand dune deposits

Lithology: sand; silt

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

alluvium

Lithology: sand; silt; clay or mud; gravel