Chadron Formation

Chadron Formation
Stratigraphic range: Late Eocene
~35–34 Ma
Chadron Formation in Badlands National Park, South Dakota
TypeGeological formation
Unit ofWhite River Formation
UnderliesBrule Formation
Overliesmarine indet.
Lithology
PrimaryFine grained clastic rocks
OtherTuff, Sandstone
Location
RegionNebraska, Wyoming, North Dakota, South Dakota
CountryUnited States
Type section
Named forChadron, Nebraska

Chadron Formation is a rock formation in North Dakota, South Dakota, northwestern Nebraska, and eastern Wyoming. It is named after the town of Chadron, Nebraska. It was mapped out by Carl Vondra in the 1950s.[1]

  1. ^ Nebraska Academy of Sciences (1985). Transactions of the Nebraska Academy of Sciences and Affiliated Societies. The Academy. p. 128. Retrieved 14 December 2012.