Cherokee Group(Phanerozoic | Paleozoic | Carboniferous Pennsylvanian-Early [Desmoinesian])at surface, covers < 0.1 % of this area
Includes: Cabaniss FM (base CA) with Verdigris Limestone Member (base V) and Mineral coal bed (base MC), Krebs FM with Bluejacket Sandstone Member (base BJ) and Warner Sandstone Member (base WR).
Marmaton Group(Phanerozoic | Paleozoic | Carboniferous Pennsylvanian-Early [Desmoinesian])at surface, covers < 0.1 % of this area
Includes: Lost Branch FM, Memorial Shale, Lenapah Limestone (base LE), Nowata Shale, Altamont Limestone (base PA), Bandera Shale, Pawnee Limestone (base PA), Labette Shale and Fort Scott Limestone.