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Mineral Resources > Online Spatial Data > Geology > by state > Texas Geology

Geologic units in Walker county, Texas

Whitsett Formation (Phanerozoic | Cenozoic | Tertiary | Eocene Oligocene) at surface, covers 7 % of this area

Whitsett Formation

Lithology: clay or mud; sandstone; siltstone; sand

Fleming Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 28 % of this area

Fleming Formation

Lithology: clay or mud; sandstone

alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 10 % of this area

alluvium

Lithology: sand; silt; clay or mud; gravel

Willis Formation (Phanerozoic | Cenozoic | Tertiary | Pliocene) at surface, covers 18 % of this area

Willis Formation

Lithology: clay or mud; silt; sand; gravel

Manning Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 7 % of this area

Manning Formation

Lithology: clay or mud; sand; bentonite; sandstone; siltstone; coal

Catahoula Formation (Phanerozoic | Cenozoic | Tertiary | Oligocene) at surface, covers 18 % of this area

Catahoula Formation

Lithology: mudstone; sand; tuff; sandstone; conglomerate

Deweyville Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene (?)) at surface, covers 2 % of this area

Deweyville Formation

Lithology: sand; silt; clay or mud

Wellborn Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 5 % of this area

Wellborn Formation

Lithology: sandstone; sand ; clay or mud; coal

Beaumont Formation, areas predominantly sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Late) at surface, covers 2 % of this area

Beaumont Formation, areas predominantly sand

Lithology: sand; silt; clay or mud; gravel

Yegua Formation (Phanerozoic | Cenozoic | Tertiary | Eocene-Middle) at surface, covers 0.9 % of this area

Yegua Formation

Lithology: clay or mud; sandstone; limestone; coal

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

Terrace deposits

Lithology: terrace; sand; gravel; silt; clay or mud

Cadell Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 1 % of this area

Cadell Formation

Lithology: siltstone; clay or mud; sandstone; sand