Geologic units in Stevens county, Kansas

Loess (Holocene to Pleistocene) at surface, covers 65 % of this area

eolian silts

Dune Sand (Holocene to Pleistocene) at surface, covers 34 % of this area

unconsolidated dune sand

Alluvium (Holocene to Pleistocene) at surface, covers 1.0 % of this area

unconsolidated sand, silt, clay, and gravel

Alluvium (Pleistocene) at surface, covers 0.3 % of this area

unconsolidated sand, silt, clay, and gravel

Pleistocene and Pliocene deposits, undifferentiated (Pleistocene to Pliocene) at surface, covers < 0.1 % of this area

TEXAS- Interfingering beds, tongues, and lenses of sand, silt, clay, gravel, sandstone, caliche, limestone, conglomerate, and volcanic ash. Includes Ogallala and Laverne Formations of Pliocene age and younger deposits of Pleistocene age. Locally the units are tightly cemented by calcium carbonate; other places, they are very poorly consolidated and nearly free of cementing materials. Thickness ranges from 0 to about 800 feet.

Dune Sand (Pleistocene) at surface, covers < 0.1 % of this area

CIMARRON- Fine- to medium-grained sand 0 to 40 feet thick. TEXAS- Fine to coarse windblown sand. Maximum thickness about 30 feet. BEAVER- Fine to coarse, round to sub-round, windblown sand consisting mostly of quartz grains. 0-50 feet thick.