Geologic units in Jackson county, Kansas

Drift (Pleistocene) at surface, covers 43 % of this area

sand, silt, clay, and some gravel

Wabaunsee Group (Late Pennsylvanian- Virgilian) at surface, covers 23 % of this area

Includes: Wood Siding FM, Root Shale, Stotler Limestone (base ST), Pillsbury Shale, Zeandale Limestone (base Z), Willard Shale, Emporia Limestone (base E), Auburn Shale, Bern Limestone (base BR), Scranton Shale, Howard Limestone (base H), and Severy Shale.

Admire Group (Late Pennsylvanian) at surface, covers 16 % of this area

Includes: Grenola Limestone, Roca Shale, Red Eagle Limestone (base RE), Johnson Shale, Foraker Limestone (base FO), Janesville Shale with Five Point Limestone Member (base FP), Falls City Limestone, and Onaga Shale.

Alluvium (Holocene to Pleistocene) at surface, covers 10 % of this area

unconsolidated sand, silt, clay, and gravel

Council Grove Group (Early Permian Gearyan) at surface, covers 8 % of this area

Includes: Speiser Shale, Funston Limestone, Blue Rapids Shale, Crouse Limestone (base CS), Easy Creek Shale, Bader Limestone (base BE), Stearns Shale, Beattie Limestone, Eskridge Shale, and Neva Limestone.