Geologic units in Lafayette county, Arkansas

Terrace deposits (Late Pleistocene) at surface, covers 53 % of this area

Alluvial deposits on one or more terrace levels

Alluvium (Holocene) at surface, covers 34 % of this area

Alluvial deposits of present streams

Wilcox Group (Early Eocene) at surface, covers 7 % of this area

Wilcox Group

Claibourne Group (Middle Eocene) at surface, covers 6 % of this area

Claibourne Group