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Geologic units in Hamilton county, Texas

undivided part Fredericksberg Group (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 13 % of this area
undivided part Fredericksberg Group
Lithology: clay or mud; limestone; mudstone; shale
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 4 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Walnut Clay (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 48 % of this area
Walnut Clay
Lithology: clay or mud; limestone; shale
Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 0.8 % of this area
Terrace deposits
Lithology: terrace; sand; gravel; silt; clay or mud
Twin Mountains Formation (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.2 % of this area
Twin Mountains Formation
Lithology: sandstone; claystone; conglomerate
Glen Rose Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 4 % of this area
Glen Rose Limestone
Lithology: limestone; clay or mud; sandstone; conglomerate
Paluxy Sand and Glen Rose Limestone, undivided (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 26 % of this area
Paluxy Sand and Glen Rose Limestone, undivided
Lithology: sandstone; limestone; claystone
lower part of Washita Group (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean]) at surface, covers 1 % of this area
lower part of Washita Group
Lithology: limestone; mudstone
Paluxy Sand (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 4 % of this area
Paluxy Sand
Lithology: sand; sandstone; limestone

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Page Last modified: 11:25 on 07-Jan-2014