Raymond R. Burchett Nebraska Geological Survey Lincoln The Niobrara formation was named in north-eastern Nebraska by Meek and Hayden1 for exposures along the Missouri River bluffs near the town of Niobrara in Knox County (Fig. 1). Distribution of the Niobrara is restricted to the western four fifths of Nebraska. Much of the formation is concealed by deposits of older Cretaceous, Tertiary, and the younger Quaternary age rocks. Exposures of the Niobrara occur in the south-central, east-central, northeastern, and northwestern parts of the state. STRATIGRAPHY The Niobrara is divided into two members (F...

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