Earth:DeBeque Formation
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Short description: Geologic formation in Colorado, United States
| DeBeque Formation Stratigraphic range: Late Paleocene-Early Eocene (Clarkforkian-Wasatchian) ~56–50 Ma | |
|---|---|
 Fossil from the DeBeque Formation | |
| Type | Formation |
| Sub-units | Atwell Gulch Member |
| Lithology | |
| Primary | Claystone |
| Location | |
| Coordinates | [ ⚑ ] : 40°00′N 107°54′W / 40.0°N 107.9°W |
| Paleocoordinates | [ ⚑ ] 44°48′N 91°48′W / 44.8°N 91.8°W |
| Region |  Colorado |
| Country |  United States |
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The DeBeque Formation is a geologic formation in Colorado's Piceance Basin,[1] preserving fossils which date back to the Late Paleocene to Early Eocene period (Clarkforkian to Wasatchian in the NALMA classification.[2][3] Examples of these fossils are held in the University of Colorado Museum of Natural History.[4]
Wasatchian correlations
| Basin | Powder River Uinta Piceance Colorado Plateau Wind River Green River Bighorn |
Piceance |
Colorado Plateau |
Wind River |
Green River |
Bighorn |
Williston | Okanagan | Princeton | Buck Creek | Nechako | Sverdrup | Potomac | GoM | Laguna Salada | Rio Grande | North Park | Raton | Galisteo | San Juan |      DeBeque Formation (North America) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Country | United States |
 Canada |
United States |
 Mexico |
United States
| |||||||||||||||||
| Copelemur | 14px | 14px | 14px | 14px | ||||||||||||||||||
| Coryphodon | 14px | 14px | 14px | 14px | 14px | 14px | 14px | 14px | 14px | 14px | ||||||||||||
| Diacodexis | 14px | 14px | 14px | 14px | 14px | 14px | 14px | |||||||||||||||
| Homogalax | 14px | 14px | 14px | 14px | 14px | 14px | 14px | |||||||||||||||
| Oxyaena | 14px | 14px | 14px | 14px | 14px | |||||||||||||||||
| Paramys | 14px | 14px | 14px | 14px | 14px | 14px | 14px | 14px | 14px | |||||||||||||
| Primates | 10px | 10px | 10px | 10px | 10px | 10px | 10px | |||||||||||||||
| Birds | 10px | 10px | 10px | 10px | 10px | |||||||||||||||||
| Reptiles | 10px | 10px | 10px | 10px | 10px | 10px | 10px | |||||||||||||||
| Fish | 10px | 10px | 10px | 10px | 10px | 10px | 10px | |||||||||||||||
| Insects | 10px | 10px | 10px | 10px | 10px | 10px | ||||||||||||||||
| Flora | 10px | 10px | 10px | 10px | 10px | 10px | 10px | 10px | 10px | |||||||||||||
| Environments | Alluvial-fluvio-lacustrine | Fluvial | Fluvial | Fluvio-lacustrine | Fluvial | Lacustrine | Fluvio-lacustrine | Deltaic-paludal | Shallow marine | Fluvial | Shallow marine | Fluvial | Fluvial |  Wasatchian volcanoclastics8px Wasatchian fauna  Wasatchian flora | ||||||||
| Volcanic | Yes | No | Yes | No | Yes | No | Yes | No | Yes | No | ||||||||||||
See also
- List of fossiliferous stratigraphic units in Colorado
- Paleontology in Colorado
References
- ↑ Bown & Kihm, 1981
- ↑ DeBeque Formation at Fossilworks.org
- ↑ Hirsch et al., 1997
- ↑ "Collections" (in en). 24 May 2016. https://www.colorado.edu/cumuseum/research-collections/paleontology/vertebrates-ichnofossils/collections.
Bibliography
- Hirsch, Karl F.; Allen J. Kihm, and Darla K. Zelenitsky. 1997. New Eggshell of Ratite Morphotype with Predation Marks from the Eocene of Colorado. Journal of Vertebrate Paleontology 17. 360. ISSN 0272-4634 JSTOR 4523812 doi:10.1080/02724634.1997.10010980
- Bown, Thomas M., and Allen J. Kihm. 1981. Xenicohippus, an Unusual New Hyracotheriine (Mammalia, Perissodactyla) from Lower Eocene Rocks of Wyoming, Colorado and New Mexico. Journal of Paleontology 55. 257. ISSN 0022-3360 JSTOR 1304347
Further reading
- A. J. Lichtig and S. G. Lucas. 2015. Paleocene-Eocene turtles of the Piceance Creek Basin, Colorado. New Mexico Museum of Natural History and Science Bulletin 67:145-152
- A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado
- K. P. Schmidt. 1938. New crocodilians from the upper Paleocene of western Colorado. Geological Series of Field Museum of Natural History 6(21):315-321
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