Geologic units in Harvey county, Kansas

Alluvium (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers 7 % of this area: unconsolidated sand, silt, clay, and gravel
Lithology: gravel; sand; silt; clay or mud
Sumner Group (Phanerozoic | Paleozoic | Permian [Cimarronian]) at surface, covers 21 % of this area: Ninnescah Shale (base N)- mostly red silty shale with some gray shale , argillaceous limestone and dolomite. Wellington FM with Carlton Limestone Member (base CR)-mostly gray and some red shale with minor limestone and dolomite, siltstone, gypsum and anhydrite
Lithology: shale; limestone; siltstone; dolostone (dolomite); evaporite
Dune Sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 8 % of this area: unconsolidated dune sand
Lithology: sand
Alluvium (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 23 % of this area: unconsolidated sand, silt, clay, and gravel
Lithology: gravel; sand; silt; clay or mud
Loess (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 41 % of this area: eolian silts
Lithology: silt