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

Geologic units in Guadalupe county, Texas

Wilcox Group, undivided (Phanerozoic | Cenozoic | Tertiary | Paleocene Eocene) at surface, covers 32 % of this area
Wilcox Group, undivided
Lithology: fine-grained mixed clastic; coal; sand; clay or mud
Carizzo Sand (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 10 % of this area
Carizzo Sand
Lithology: sandstone
Navarro Group and Marlbrook Marl, undivided (Phanerozoic | Mesozoic | Cretaceous-Late [Gulfian]) at surface, covers 15 % of this area
Navarro Group and Marlbrook Marl, undivided
Lithology: clay or mud; fine-grained mixed clastic; sandstone; sand
Willis Formation (Phanerozoic | Cenozoic | Tertiary | Pliocene) at surface, covers 3 % of this area
Willis Formation
Lithology: clay or mud; silt; sand; gravel
alluvium (Phanerozoic | Cenozoic | Quaternary | Holocene) at surface, covers 4 % of this area
alluvium
Lithology: sand; silt; clay or mud; gravel
Reklaw Formation (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 4 % of this area
Reklaw Formation
Lithology: sandstone; clay or mud
Midway Group, undivided (Phanerozoic | Cenozoic | Tertiary | Paleocene) at surface, covers 3 % of this area
Midway Group, undivided
Lithology: fine-grained mixed clastic; limestone; mudstone
Pecan Gap Chalk (Phanerozoic | Mesozoic | Cretaceous-Late [Gulfian]) at surface, covers 6 % of this area
Pecan Gap Chalk
Lithology: limestone; sand; clay or mud; limestone
Edwards Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.1 % of this area
Edwards Limestone
Lithology: limestone; dolostone (dolomite); chert
Terrace deposits (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 6 % of this area
Terrace deposits
Lithology: terrace; sand; gravel; silt; clay or mud
Leona Formation (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 18 % of this area
Leona Formation
Lithology: sand; gravel; clay or mud
Queen City Sand (Phanerozoic | Cenozoic | Tertiary | Eocene) at surface, covers 0.3 % of this area
Queen City Sand
Lithology: sandstone; siltstone; clay or mud; sand

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