Geologic units in Mississippi county, Arkansas

Additional scientific data in this geographic area

Alluvium - Alluvial deposits of local streams or of overbank flow of major streams (Holocene) at surface, covers 59 % 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 26 % 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 14 % of this area

Alluvial deposits on one or more terrace levels

Alluvial deposits (Quaternary) at surface, covers 0.3 % of this area

Sand, silt, clay, and gravel. In flood plain of Mississippi River more than 100 feet thick; in smaller streams generally less than 20 feet thick.

Holocene series (Quaternary-Holocene Series) at surface, covers 0.2 % of this area

Alluvium - clay, silt, sand, and gravel.