Geologic units in Poinsett county, Arkansas

Terrace deposits (Late Pleistocene) at surface, covers 66 % 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 22 % 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 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.

Sand and gravel (Early Pleistocene) at surface, covers 2 % of this area

Sand and gravel

Claibourne Group (Middle Eocene) at surface, covers 2 % of this area

Claibourne Group

Loess (Early Pleistocene) at surface, covers 1 % of this area

Loess

Silt and sand (Early Pleistocene) at surface, covers 0.4 % of this area

Contains lenses of gravel and clay