Geologic units containing Loess

Loess
A widespread, homogeneous, commonly nonstratified, porous, friable, slightly coherent, usually highly calcareous, fine-grained blanket deposit, consisting predominantly of silt with subordinate grain sizes ranging from clay to fine sand.
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Arkansas - Colorado - Idaho - Kentucky - Missouri - Mississippi - Washington - Wyoming

Arkansas

Colorado

Idaho

Kentucky

Missouri

Mississippi

Washington

Wyoming