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Mineral Resources > Online Spatial Data > Geology > by state > Kansas Geology

Geologic units in Hamilton county, Kansas

[Additional scientific data in this geographic area]

Alluvium (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 5 % of this area

unconsolidated sand, silt, clay, and gravel

Lithology: gravel; sand; silt; clay or mud

Ogallala Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 0.9 % 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

Lithology: arkose; limestone; volcanic ash; carbonate; sandstone; claystone

Carlile Shale (Phanerozoic | Mesozoic | Cretaceous-Late) at surface, covers 0.9 % of this area

chalky shale with bentonite and thick chalk beds, dark gray fissile shale containing septarian concretions, and fine-grained sandstone.

Lithology: shale; limestone; sandstone

Loess (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 78 % of this area

eolian silts

Lithology: silt

Niobrara Chalk (Phanerozoic | Mesozoic | Cretaceous-Late) at surface, covers 0.4 % of this area

interbedded, soft, light-gray calcareous shale and chalk

Lithology: shale; limestone

Ogallala Fm (Phanerozoic | Cenozoic | Tertiary) at surface, covers < 0.1 % of this area

Loose to well-cemented sand and gravel

Lithology: sandstone; conglomerate

Dune Sand (Phanerozoic | Cenozoic | Quaternary | Pleistocene Holocene) at surface, covers 12 % of this area

unconsolidated dune sand

Lithology: sand

Greenhorn Limestone and Graneros Shale (Phanerozoic | Mesozoic | Cretaceous-Late) at surface, covers 2 % of this area

Greenhorn FM- thin bedded gray, chalky limestone and calcareous shale. Graneros Shale- fissile, noncalcareous, gray shale locally contains sandstone and siltstone beds.

Lithology: limestone; shale; sandstone; siltstone

Dakota Formation (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 0.3 % of this area

White, gray, red, brown and tan kaolinitic claystone, mudstone, shale and siltstone interbedded with grayish to yellowish brown thick lenticular sandstone beds. It also contains lignite and sandstone is commonly well cemented with iron oxide and calcite.

Lithology: claystone; mudstone; shale; siltstone; sandstone; coal

Alluvium (Phanerozoic | Cenozoic | Quaternary | Pleistocene) at surface, covers < 0.1 % of this area

unconsolidated sand, silt, clay, and gravel

Lithology: gravel; sand; silt; clay or mud