Glen Rose Limestone
(Early Cretaceous) at surface, covers 17 % of this area Glen Rose Limestone
Walnut Clay
(Early Cretaceous) at surface, covers 6 % of this area Walnut Clay
Paluxy Sand
(Early Cretaceous) at surface, covers 5 % of this area Paluxy Sand
Alluvium
(Holocene) at surface, covers 4 % of this area Alluvium
Magdalena Formation
(Pennsylvanian to Permian?) at surface, covers 3 % of this area Magdalena Formation
Brazos River Formation
(Pennsylvanian; Des Moines Series) at surface, covers 2 % of this area Brazos River Formation
Antlers Sand
(Early Cretaceous) at surface, covers 2 % of this area Antlers Sand
Wolf Mountain Shale
(Pennsylvanian; Missouri Series) at surface, covers 1 % of this area Wolf Mountain Shale
Terrace deposits
(Pleistocene and Holocene) at surface, covers 0.3 % of this area Terrace deposits
Winchell Limestone
(Pennsylvanian; Missouri Series) at surface, covers 0.3 % of this area Winchell Limestone
Edwards Limestone
(Early Cretaceous) at surface, covers 0.2 % of this area Edwards Limestone