Admire Group(Phanerozoic | Paleozoic | Carboniferous Pennsylvanian-Late)at surface, covers 3 % 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.
Douglas Group(Phanerozoic | Paleozoic | Carboniferous Pennsylvanian-Late [Virgilian])at surface, covers 0.5 % of this area
Lawrence FM (base LA)- mostly gray shale and sandstone with minor red shale, coal, gray limestone and conglomerate, thickness ranges from 140ft to 250 ft. Stranger FM- five members containing sandstone, shale, and minor limestone, coal and conglomerate ranging from 100 ft. to 180 ft. thickness.