Divided into (ascending): Fort Scott limestone, Labette shale, Pawnee limestone, Bandera shale, Altamont limestone, Nowata shale, Lenapah limestone, and Memorial shale. Outcrop area of Marmaton rocks extends from southern IA across MO and southeastern KS into northeastern OK. This study deals with southeastern KS in the Forest City basin and adjoining areas that include the Cherokee basin and Chautauqua platform. Conformably overlies Cherokee shale; disconformably underlies Hepler sandstone. Beds are obviously divisible into megacyclothems. Consists of about 250 ft of shale, sandstone, and limestone beds and a very minor amount of coal. Brachiopods; bryozoans, crinoid remains, mollusks, corals; conodonts. Composite section; cross section. Of Pennsylvanian, Des Moines age.

Source: GNU records (USGS DDS-6; Denver GNULEX).

Extended as an undivided unit into the subsurface of Baca County, Colorado, in the Anadarko basin, east of the Las Animas arch. Overlies Cherokee shale and underlies Bronson group (undivided). Age is Middle Pennsylvanian (Desmoinesian). Report includes correlation chart.

Source: Modified from GNU records (USGS DDS-6; Denver GNULEX).

Is the upper group of the Des Moines Supergroup. Divided in south-central IA on the Iowa shelf into 11 formations. The newly named Mouse Creek Formation is divided into Excello Shale and Blackjack Creek Members. The overlying 10 formations in sequence are: 1) Morgan School Shale (new) with its Summit Coal Member at top, 2) Stephens Forest Formation (new) with its Little Osage Shale Member, Houx Limestone Member, unnamed shale member, and Higginsville Limestone Member; 3) Labette Shale (includes Marshall and Mystic Coal Members), 4) Pawnee Formation (includes Anna Shale, Myrick Station Limestone, Mine Creek Shale, Coal City Limestone Members), 5) Bandera Shale, 6) Altamont Formation (includes Amoret Limestone, Lake Neosho Shale, and Worland Limestone Members, 7) Nowata Shale, 8) Lenapah Limestone, 9) unnamed shale, 10) "Lost Branch" Formation (includes Sni Mills Limestone Member, unnamed shale member. Cooper Creek Limestone Member). Marmaton overlies Mulky Coal Member of the newly named Swede Hollow Formation. Nomenclature chart. Graphic sections. Of Pennsylvanian, Desmoinesian age. Contact with overlying unit not described.

Source: GNU records (USGS DDS-6; Denver GNULEX).