Markley Formation
(Pennsylvanian to Early Permian) at surface, covers 19 % of this area Markley Formation
Ventioner Formation
(Pennsylvanian; Missouri Series) at surface, covers 7 % of this area Ventioner Formation
Alluvium
(Holocene) at surface, covers 4 % of this area Alluvium
Ranger Limestone
(Pennsylvanian; Missouri Series) at surface, covers 3 % of this area Ranger Limestone
Wolf Mountain Shale
(Pennsylvanian; Missouri Series) at surface, covers 3 % of this area Wolf Mountain Shale
Jasper Creek Formation
(Late Pennsylvanian; Missouri Series) at surface, covers 2 % of this area Jasper Creek Formation
Winchell Limestone
(Pennsylvanian; Missouri Series) at surface, covers 2 % of this area Winchell Limestone
Paluxy Sand
(Early Cretaceous) at surface, covers 0.9 % of this area Paluxy Sand
Chico Ridge Limestone
(Pennsylvanian; Missouri Series) at surface, covers 0.8 % of this area Chico Ridge Limestone
Glen Rose Limestone
(Early Cretaceous) at surface, covers 0.8 % of this area Glen Rose Limestone
Palo Pinto Formation
(Pennsylvanian; Missouri Series) at surface, covers 0.7 % of this area Palo Pinto Formation
Antlers Sand
(Early Cretaceous) at surface, covers 0.6 % of this area Antlers Sand