Geologic units in Woodruff county, Arkansas

Terrace deposits (Late Pleistocene) at surface, covers 57 % of this area

Alluvial deposits on one or more terrace levels

Alluvium - Alluvial deposits of local streams or of overbank flow of major streams (Holocene) at surface, covers 29 % of this area

Alluvial deposits of local streams or of overbank flow of major streams - In some areas includes deposits in abandoned meanders of major streams

Dune sand (Late Pleistocene) at surface, covers 8 % of this area

Deposited mostly on terrace deposits of the second level. Younger than some terrace deposits, older than others

Alluvium - Alluvial deposits in major stream channels or in mappable meanders of major streams (Holocene) at surface, covers 6 % of this area

Alluvial deposits in major stream channels or in mappable meanders of major streams - Includes alluvial deposits in natural levees in some areas.