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Geologic units in Audrain county, Missouri

Additional scientific data in this geographic area

Marmaton Group (Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 57 % 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 31 % 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.

Osagean Series (Early Mississippian-Osagean Series) at surface, covers 12 % of this area

Keokuk Limestone, Burlington Limestone, Elsey Formation, Reeds Spring Formation, Pierson Limestone, Fern Glen Formation.