Alluvial deposits of local streams or of overbank flow of major streams - In some areas includes deposits in abandoned meanders of major streams
Alluvial deposits on one or more terrace levels
Alluvial deposits in major stream channels or in mappable meanders of major streams - Includes alluvial deposits in natural levees in some areas.
Atoka Formation - Middle part
Atoka Formation - Lower part
Atoka Formation - Upper part
Alluvial deposits of present streams
Johns Valley Shale