Geologic units in Reno county, Kansas

Additional scientific data in this geographic area

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

unconsolidated sand, silt, clay, and gravel

Dune Sand (Holocene to Pleistocene) at surface, covers 30 % of this area

unconsolidated dune sand

Alluvium (Holocene to Pleistocene) at surface, covers 20 % of this area

unconsolidated sand, silt, clay, and gravel

Loess (Holocene to Pleistocene) at surface, covers 7 % of this area

eolian silts

Sumner Group (Late Permian - Cimarronian) at surface, covers 7 % 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

Nippewalla Group (Late Permian- Custerian to Cimarronian) at surface, covers 2 % of this area

Dog Creek FM- maroon silty shale, siltstone, fine-grained feldspathic sandstone. Blaine FM- (base B) gypsum beds seperated by dolomite and red shale. Flower Pot Shale -(base FL) red gypsiferous shale silty shale and minor sandstone and siltstone. Cedar Hills Sandstone- feldspathic sandstone, siltstone, and silty shale. Salt Plain FM- red flaky, silty shale and some siltstone with thick salt beds at base. Harper Sandstone with Kingman Sandstone member (base K)- red argillaceous siltstone and fine silty sandstone with a few beds of res shale and white sandstone. Stone Coral FM- dolomite, anhydrite, gypsum and salt.

Ogallala Formation (Miocene) at surface, covers 0.7 % of this area

massive to cross-bedded, generally arkosic sand, silt and gravel, locally cemented with calcium carbonate; also contains limestone, volcanic ash, diatomaceous marl, opaline sandstone and bentonitic clay