Meramecian Series
(Late Mississippian-Meramecian Series) at surface, covers 53 % of this area St. Louis Limestone, Salem Formation, Warsaw Formation.
Cherokee Group - Cabaniss Subgroup, Krebs Subgroup
(Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 23 % of this area Cabaniss Subgroup - cyclic deposits, shale, sandstone, clay and several workable coal beds. Krebs Subgroup - cyclic deposits, sandstone, siltstone, shale, clay and some workable coal beds.
Marmaton Group
(Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 12 % of this area Cyclic deposits, shale and limestone with sandstone, clay and several coal beds, some workable.
Holocene series
(Quaternary-Holocene Series) at surface, covers 11 % of this area Alluvium - clay, silt, sand, and gravel.
St. Louis Limestone
(Mississippian (Visean)) at surface, covers 0.2 % of this area St. Louis Limestone.
