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

Geologic units in Grimes county, Texas

Whitsett Formation (Phanerozoic | Cenozoic | Tertiary | Eocene Oligocene) at surface, covers 4 % of this area
Whitsett Formation
Lithology: clay or mud; sandstone; siltstone; sand
Fleming Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 25 % of this area
Fleming Formation
Lithology: clay or mud; sandstone
Willis Formation (Phanerozoic | Cenozoic | Tertiary | Pliocene) at surface, covers 13 % of this area
Willis Formation
Lithology: clay or mud; silt; sand; gravel
Lissie Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene-Middle) at surface, covers < 0.1 % of this area
Lissie Formation
Lithology: sand; silt; clay or mud
Oakville Sandstone (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers < 0.1 % of this area
Oakville Sandstone
Lithology: sandstone; clay or mud
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 9 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Catahoula Formation (Phanerozoic | Cenozoic | Tertiary | Oligocene) at surface, covers 11 % of this area
Catahoula Formation
Lithology: mudstone; sand; tuff; sandstone; conglomerate
Manning Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 9 % of this area
Manning Formation
Lithology: clay or mud; sand; bentonite; sandstone; siltstone; coal
Wellborn Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 7 % of this area
Wellborn Formation
Lithology: sandstone; sand ; clay or mud; coal
Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 3 % of this area
Terrace deposits
Lithology: terrace; sand; gravel; silt; clay or mud
Yegua Formation (Phanerozoic | Cenozoic | Tertiary | Eocene-Middle) at surface, covers 14 % of this area
Yegua Formation
Lithology: clay or mud; sandstone; limestone; coal
Cadell Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 5 % of this area
Cadell Formation
Lithology: siltstone; clay or mud; sandstone; sand

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