Geologic units in Miller county, Arkansas

Alluvium (Holocene) at surface, covers 48 % of this area

Alluvial deposits of present streams

Claibourne Group (Middle Eocene) at surface, covers 21 % of this area

Claibourne Group

Wilcox Group (Early Eocene) at surface, covers 18 % of this area

Wilcox Group

Terrace deposits (Late Pleistocene) at surface, covers 11 % of this area

Alluvial deposits on one or more terrace levels

Midway Group (Paleocene) at surface, covers 0.4 % of this area

Midway Group

Terrace deposits (Pleistocene and Holocene) at surface, covers 0.2 % of this area

Terrace deposits

Queen City Sand (Eocene) at surface, covers 0.1 % of this area

Queen City Sand

Alluvium (Holocene) at surface, covers 0.1 % of this area

Alluvium

Wilcox Group, undivided (Paleocene to Eocene) at surface, covers 0.1 % of this area

Wilcox Group, undivided

Weches Formation (Eocene) at surface, covers < 0.1 % of this area

Weches Formation

Reklaw Formation (Eocene) at surface, covers < 0.1 % of this area

Reklaw Formation

Midway Group, undivided (Paleocene) at surface, covers < 0.1 % of this area

Midway Group, undivided