Geologic units in Lincoln county, Arkansas

Alluvium - Alluvial deposits of local streams or of overbank flow of major streams (Holocene) at surface, covers 33 % 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

Alluvium - Alluvial deposits in major stream channels or in mappable meanders of major streams (Holocene) at surface, covers 24 % 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.

Terrace deposits (Late Pleistocene) at surface, covers 20 % of this area

Alluvial deposits on one or more terrace levels

Jackson Group (Late Eocene) at surface, covers 19 % of this area

Jackson Group

Alluvium (Holocene) at surface, covers 4 % of this area

Alluvial deposits of present streams