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Geologic units in Linn county, Missouri

Marmaton Group (Middle Pennsylvanian-Middle Series-Desmonian Stage) at surface, covers 56 % 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 42 % 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.

Douglas Group (Late Pennsylvanian-Upper Series-Virgilian Stage) at surface, covers 1 % of this area

Cyclic deposits, dominantly shale with sandstone, and limestone.

Pleasanton Group (Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers 0.7 % of this area

Dominantly shale and sandstone with minor coal.

Weldon River-Warrensburg-Moberly Channel Sandstone (Late Pennsylvanian-Upper Series-Missourian Stage) at surface, covers < 0.1 % of this area

Weldon River-Warrensburg-Moberly Channel Sandstone.