Chadron Formation
| Chadron Formation Stratigraphic range: Late Eocene ~35–34 Ma | |
|---|---|
| Type | Geological formation |
| Unit of | White River Formation |
| Underlies | Brule Formation |
| Overlies | marine indet. |
| Lithology | |
| Primary | Fine grained clastic rocks |
| Other | Tuff, Sandstone |
| Location | |
| Region | Nebraska, Wyoming, North Dakota, South Dakota |
| Country | United States |
| Type section | |
| Named for | Chadron, 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]
 |
Wikimedia Commons has media related to Chadron Formation. |
References
- ↑ Nebraska Academy of Sciences (1985). Transactions of the Nebraska Academy of Sciences and Affiliated Societies. The Academy. p. 128. Retrieved 14 December 2012.
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.