Geologic units in Lawrence county, Missouri

Osagean Series (Early Mississippian-Osagean Series) at surface, covers 75 % of this area

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

Meramecian Series (Late Mississippian-Meramecian Series) at surface, covers 19 % of this area

St. Louis Limestone, Salem Formation, Warsaw Formation.

Channel Sandstones (Pennsylvanian) at surface, covers 4 % of this area

Channel Sandstones

Riverton Formation, Burgner Formation (Middle Pennsylvanian-Atokan Stage) at surface, covers 1 % of this area

Shale, clay, coal. Burgner Formation - limestone.

Smithville Dolomite, Powell Dolomite, Cotter Dolomite, Jefferson City Dolomite (Early Ordovician-Ibexian Series) at surface, covers 0.7 % of this area

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

Kinderhookian Series (Early Mississippian-Kinderhookian Series) at surface, covers 0.1 % of this area

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

Chesterian Series (Late Mississippian-Chesterian Series) at surface, covers < 0.1 % of this area

Fayetteville Formation, Batesville Formation, Hindville Limestone, Vienna Limestone, Tar Springs Sandstone, Glen Dean Formation, Hardinsburg Formation, Golconda Formation, Cypress Formation, Paint Creek Formation, Yankeetown Sandstone, Renault Formation, Aux Vases Sandstone, Ste. Genevieve Limestone.