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Geologic units in Cole county, Missouri

Smithville Dolomite, Powell Dolomite, Cotter Dolomite, Jefferson City Dolomite (Early Ordovician-Ibexian Series) at surface, covers 71 % of this area

Fine crystalline, silty, cherty dolomite, and oolitic chert with local sandstone beds.

Roubidoux Formation (Early Ordovician-Ibexian Series) at surface, covers 15 % of this area

Sandstone, chert and interbedded dolomite

Gasconade Dolomite (Early Ordovician-Ibexian Series) at surface, covers 7 % of this area

Coarse - crystalline cherty dolomite with a basal Gunter Sandstone Member.

Holocene series (Quaternary-Holocene Series) at surface, covers 5 % of this area

Alluvium - clay, silt, sand, and gravel.

Osagean Series (Early Mississippian-Osagean Series) at surface, covers 1 % of this area

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

Kinderhookian Series (Early Mississippian-Kinderhookian Series) at surface, covers 0.9 % of this area

Northview Shale, Sedalia Formation, Compton Limestone, Bachelor Formation Chouteau Group, Hannibal Shale, Horton Creek Limestone.

Pennsylvanian Undifferentiated (Pennsylvanian) at surface, covers < 0.1 % of this area

Pennsylvanian Undifferentiated

Eminence Dolomite, Potosi Dolomite (Late Cambrian-Croixian Series) at surface, covers < 0.1 % of this area

Eminence Dolomite - dolomite with some druse - coated chert. Potosi Dolomite - dolomite with abundance of druse - coated chert.

St. Peter Sandstone, Everton Formation (Middle Ordovician to Early Ordovician) at surface, covers < 0.1 % of this area

St. Peter Sandstone, Everton Formation