Niobrara Formation, Geological formation in Great Plains region, United States.
The Niobrara Formation contains two principal components: the Smoky Hill Chalk Member and the Fort Hays Limestone Member, extending across multiple states.
Scientists Meek and Hayden formally named the formation in 1862, following initial exploration efforts that began in 1857 across the region.
Native American tribes utilized the formation's Smoky Hill Jasper, a silicified material beneath Ogallala sediments, for manufacturing tools and implements.
The formation serves as a source of natural gas extraction in the eastern Denver Basin through specific drilling and fracturing methods.
Marine fossils within the chalk layers reveal the existence of mosasaurs, plesiosaurs, and primitive birds from the Late Cretaceous period.
Location: Minnesota
Location: Montana
Made from material: chalk
GPS coordinates: 42.74691,-98.03980
Latest update: May 27, 2025 13:20
Ashfall Fossil Beds
37.1 km
Lewis and Clark Lake
47.2 km
Niobrara State Park
1.6 km
Chief Standing Bear Memorial Bridge
4.9 km
Lewis and Clark State Recreation Area
39 km
Calumet Bluff
47.1 km
Z.C.B.J. Opera House
16.7 km
St. Wenceslaus Catholic Church and Parish House
38.5 km
Gavins Point National Fish Hatchery
47.9 km
St. Rose of Lima Catholic Church and School Complex
44.1 km
Niobrara River Bridge
2.3 km
Congregational Church and Manse
18.8 km
Training Dike Recreation Area
47.8 km
Church of Our Most Merciful Saviour
19.5 km
Old St. Wenceslaus Catholic Parish House
38.4 km
Knox County Courthouse
20.3 km
Cottonwood Recreation Area
47.3 km
Rad Sladkovsky
14.2 km
Rouse Ranch
46.1 km
ZCBJ Hall
31.1 km
Verdigris Creek Bridge
43.6 km
Bon Homme County Courthouse
30.9 km
Ponca Tribal Self-Help Community Building Historic District
5.3 km
John Frydrych Farmstead
33.6 km
Mathias Merkwan Rubblestone Barn
40.2 km
Wagner House
40.2 km
Bazile Creek Bridge
20.3 km
Gross State Aid Bridge
10.3 kmReviews
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