| Glencairn Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Unit of | Purgatoire Group |
| Underlies | Dakota Group |
| Overlies | Lytle Formation |
| Thickness | 10–145 feet (3.0–44.2 m) |
| Lithology | |
| Primary | Shale |
| Other | Sandstone |
| Location | |
| Coordinates | 38°31′01″N 104°58′19″W / 38.517°N 104.972°W |
| Region | Colorado New Mexico |
| Country | United States |
| Type section | |
| Named for | Small tract of land north of Lytle, Colorado (sec 2, T17S, R68W) |
| Named by | G.I. Finlay |
| Year defined | 1916 |
  Glencairn Formation (the United States)  Glencairn Formation (Colorado) | |
The Glencairn Formation is a geologic formation found in Colorado[1] and New Mexico.[2] It preserves fossils characteristic of the Albian Age of the Cretaceous Period.[3]
- ^ Finlay, G.I. (1916). "-Description of the Colorado Springs quadrangle, Colorado" (PDF). U.S. Geological Survey Geologic Atlas of the United States Folio. 203. Retrieved 2 September 2020.
- ^ Waage, Karl M. (1953). "Refractory clay deposits of south-central Colorado". U.S. Geological Survey Bulletin. 993. doi:10.3133/b993.
- ^ 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.