Kansas City Group
(Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers 64 % of this area Cyclic deposits, limestone and shale with minor sandstone and coal.
Pleasanton Group
(Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers 19 % of this area Dominantly shale and sandstone with minor coal.
Marmaton Group
(Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 11 % 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 6 % of this area Alluvium - clay, silt, sand, and gravel.
Alluvium
(Holocene to Pleistocene) at surface, covers < 0.1 % of this area unconsolidated sand, silt, clay, and gravel
Kansas City Group
(Middle Pennsylvanian- Missourian) at surface, covers < 0.1 % of this area Includes: Lane Shale,Wyandotte Limestone (base WY), Liberty Memorial Shale, Iola Limestone (base I), Chanute Shale (base CH), Dewey Limestone, Nellie Bly FM, Cherryvale FM, Dennis Limestone (base DN), Galeburg Shale, Mound Valley Limestone, Ladore Shale, Swope Limestone (base SW), Elm Branch Shale, Hertha Limestone.
Loess
(Holocene to Pleistocene) at surface, covers < 0.1 % of this area eolian silts
