Geologic units in Eastland county, Texas

Antlers Sand (Early Cretaceous) at surface, covers 37 % of this area

Antlers Sand

Thrifty and Graham Formations, undivided (Late Pennsylvanian; Virgil Series) at surface, covers 14 % of this area

Thrifty and Graham Formations, undivided

Ranger Limestone and Placid Creek Shale, undivided (Pennsylvanian; Missouri Series) at surface, covers 6 % of this area

Ranger Limestone and Placid Creek Shale, undivided

Harpersville Formation (Pennsylvanian; Virgil Series) at surface, covers 5 % of this area

Harpersville Formation

Moran Formation (Permian; Wolfcamp Series) at surface, covers 5 % of this area

Moran Formation

Wolf Mountain Shale (Pennsylvanian; Missouri Series) at surface, covers 5 % of this area

Wolf Mountain Shale

Twin Mountains Formation (Early Cretaceous) at surface, covers 4 % of this area

Twin Mountains Formation

Pueblo Formation (Permian; Wolfcamp Series) at surface, covers 4 % of this area

Pueblo Formation

Magdalena Formation (Pennsylvanian to Permian?) at surface, covers 4 % of this area

Magdalena Formation

Brazos River Formation (Pennsylvanian; Des Moines Series) at surface, covers 3 % of this area

Brazos River Formation

Home Creek Limestone and Colony Creek Shale, undivided (Pennsylvanian; Missouri Series) at surface, covers 3 % of this area

Home Creek Limestone and Colony Creek Shale, undivided

Winchell Limestone (Pennsylvanian; Missouri Series) at surface, covers 3 % of this area

Winchell Limestone

Mineral Wells Formation (Pennsylvanian; Missouri Series) at surface, covers 3 % of this area

Mineral Wells Formation

Palo Pinto Formation (Pennsylvanian; Missouri Series) at surface, covers 2 % of this area

Palo Pinto Formation

Alluvium (Holocene) at surface, covers 2 % of this area

Alluvium

Mingus Formation (Pennsylvanian; Des Moines Series) at surface, covers 0.7 % of this area

Mingus Formation

Glen Rose Limestone (Early Cretaceous) at surface, covers 0.6 % of this area

Glen Rose Limestone

Paluxy Sand (Early Cretaceous) at surface, covers 0.5 % of this area

Paluxy Sand

Terrace deposits (Pleistocene and Holocene) at surface, covers 0.2 % of this area

Terrace deposits

Sedwick Formation (Permian; Wolfcamp Series) at surface, covers 0.2 % of this area

Sedwick Formation

Lingos Formation (Middle (?) Pleistocene to Recent) at surface, covers < 0.1 % of this area

Lingos Formation

Comanche Peak Limestone and Walnut Clay, undivided (Early Cretaceous) at surface, covers < 0.1 % of this area

Comanche Peak Limestone and Walnut Clay, undivided