Baldy Hill Formation
The Baldy Hill Formation is a geologic formation in northeastern New Mexico and western Oklahoma. It preserves fossils dating back to the late Triassic period.[1]
| Baldy Hill Formation Stratigraphic range: late Triassic | |
|---|---|
| Type | Formation |
| Unit of | Dockum Group |
| Underlies | Travesser Formation |
| Thickness | Over 35 meters (115 ft) |
| Lithology | |
| Primary | Mudstone |
| Other | Sandstone |
| Location | |
| Coordinates | 36.9708847°N 103.4694368°W |
| Region | New Mexico Oklahoma |
| Country | United States |
| Type section | |
| Named for | Baldy Hill |
| Named by | Baldwin and Muehlberger |
| Year defined | 1959 |
  Baldy Hill Formation (the United States)  Baldy Hill Formation (New Mexico) | |
Description
The Baldy Hill Formation is a dark purple, reddish brown, or greenish gray silty to sandy mudstone with some fine-grained sandstone. Its base is not exposed at the type section, but it is at least 35 meters (115 ft). It is overlain by the Travesser Formation, with the contact marked by the Cobert Canyon Sandstone Bed, a persistent layer of conglomerate beds.[1]
History of investigation
The formation was first named by Baldwin and Muehlberger in 1959, for exposures around Baldy Hill in the valley of the Dry Cimarron.[2]
Footnotes
- Ziegler et al. 2019
- Baldwin and Muehlberger 1959
References
- Baldwin, Brewster; Muehlberger, W.R. (1959). "Geologic studies of Union County, New Mexico" (PDF). New Mexico Bureau of Mines and Mineral Resources Bulletin. 63 (2). Retrieved 1 September 2020.
- Ziegler, Kate E.; Ramos, Frank C.; Zimmerer, Matthew J. (2019). "Geology of Northeastern New Mexico, union and Colfax Counties, New Mexico: A Geologic Summary" (PDF). New Mexico Geological Society Field Conference Series. 70 (4): 47–54. Retrieved 1 September 2020.
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