Geologic units in Adair county, Missouri

Marmaton Group (Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 50 % of this area

Cyclic deposits, shale and limestone with sandstone, clay and several coal beds, some workable.

Cherokee Group - Cabaniss Subgroup, Krebs Subgroup (Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 41 % 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.

Pleasanton Group (Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers 7 % of this area

Dominantly shale and sandstone with minor coal.

Riverton Formation, Burgner Formation (Middle Pennsylvanian-Atokan Stage) at surface, covers 0.7 % of this area

Shale, clay, coal. Burgner Formation - limestone.

Meramecian Series (Late Mississippian-Meramecian Series) at surface, covers 0.5 % of this area

St. Louis Limestone, Salem Formation, Warsaw Formation.

Weldon River-Warrensburg-Moberly Channel Sandstone (Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers 0.2 % of this area

Weldon River-Warrensburg-Moberly Channel Sandstone.