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

Geologic units in Deuel county, Nebraska

[Additional scientific data in this geographic area]

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

Loose to well-cemented sand and gravel

Lithology: sandstone; conglomerate

Gravels and alluviums (Phanerozoic | Cenozoic | Quaternary) at surface, covers < 0.1 % of this area

Includes Broadway and Louviers Alluviums

Lithology: gravel; alluvium

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

Includes Piney Creek Alluvium and younger deposits

Lithology: alluvium

Ogallala Group or Formation (Phanerozoic | Cenozoic | Tertiary | Miocene) at surface, covers 90 % of this area

Silt, sand, sandstone, gravel and conglomerate. Predominantly interfingered fine- to coarse grained, poorly sorted, arkosic, fluvial deposits of light-gray, light-olive-gray, and grayish-green calcareous silt and sand, and locally poorly consolidated conglomerate, sandstone, and siltstone.

Lithology: mudstone; sandstone; volcanic ash

White River Fm or Group (Phanerozoic | Cenozoic | Tertiary) at surface, covers < 0.1 % of this area

East: Ashy claystone and sandstone. Includes Castle Rock Conglomerate in region southeast of Denver. Northwest: Ashy claystone in North Park

Lithology: sandstone; claystone; conglomerate

White River Group (Phanerozoic | Cenozoic | Tertiary | Oligocene) at surface, covers 10 % of this area

Clay, some claystone, silt and siltstone. Predominantly greenish gray and volcaniclastic. Other occurrences are greenish gray to white and bentonitic. Local channel sandstone at base. Aprox thickness 195 ft.

Lithology: clay or mud; claystone; silt; siltstone