Atoka Formation, undivided
Harthshorne Sandstone
Savanna Formation
McAlester Formation
Alluvial deposits of present streams
Bloyd Shale, and Prairie Grove Member of the Hale Formation
Alluvial deposits on one or more terrace levels
Atoka Formation - Upper part
Cane Hill Member of Hale Formation
Atoka Formation - Middle part
Boggy Formation
Atoka Formation - Lower part