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Geologic units in Greene county, Arkansas

Additional scientific data in this geographic area

Terrace deposits (Late Pleistocene) at surface, covers 61 % of this area

Alluvial deposits on one or more terrace levels

Silt and sand (Early Pleistocene) at surface, covers 26 % of this area

Contains lenses of gravel and clay

Alluvium - Alluvial deposits of local streams or of overbank flow of major streams (Holocene) at surface, covers 9 % 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 2 % of this area

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

Wilcox Group (Early Eocene) at surface, covers 1 % of this area

Wilcox Group

Holocene series (Quaternary-Holocene Series) at surface, covers < 0.1 % of this area

Alluvium - clay, silt, sand, and gravel.