Geologic units in Tarrant county, Texas

Woodbine Formation (Late Cretaceous; Gulfian Series) at surface, covers 24 % of this area

Woodbine Formation

Grayson Marl and Main Street Limestone, undivided (Early Late Cretaceous and Late Early Cretaceous) at surface, covers 14 % of this area

Grayson Marl and Main Street Limestone, undivided

Fort Worth Limestone and Duck Creek Formation, undivided (Early Cretaceous) at surface, covers 10 % of this area

Fort Worth Limestone and Duck Creek Formation, undivided

Pawpaw Formation, Weno Limestone, and Denton Clay, undivided (Early Cretaceous) at surface, covers 9 % of this area

Pawpaw Formation, Weno Limestone, and Denton Clay, undivided

Eagle Ford Formation (Late Cretaceous) at surface, covers 9 % of this area

Eagle Ford Formation

Terrace deposits (Pleistocene and Holocene) at surface, covers 7 % of this area

Terrace deposits

Goodland Limestone and Walnut Clay, undivided (Early Cretaceous; Comanchean Series) at surface, covers 6 % of this area

Goodland Limestone and Walnut Clay, undivided

Alluvium (Holocene) at surface, covers 6 % of this area

Alluvium

Kiamichi Formation (Early Cretaceous; Comanchean Series) at surface, covers 5 % of this area

Kiamichi Formation

Paluxy Sand (Early Cretaceous) at surface, covers 4 % of this area

Paluxy Sand

Duck Creek Limestone (Early Cretaceous; Comanchean Series) at surface, covers 2 % of this area

Duck Creek Limestone

Undivided part of Washita Group (Early Cretaceous; Comanchean Series) at surface, covers 2 % of this area

Undivided part of Washita Group

Walnut Clay (Early Cretaceous) at surface, covers 1 % of this area

Walnut Clay