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DeBeque Formation

Coordinates: 40°00′N 107°54′W / 40.0°N 107.9°W / 40.0; -107.9
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DeBeque Formation
Stratigraphic range: Late Paleocene-Early Eocene (Clarkforkian-Wasatchian)
~56–50 Ma
Fossil from the DeBeque Formation
TypeFormation
Sub-unitsAtwell Gulch Member
Lithology
PrimaryClaystone
Location
Coordinates40°00′N 107°54′W / 40.0°N 107.9°W / 40.0; -107.9
Approximate paleocoordinates44°48′N 91°48′W / 44.8°N 91.8°W / 44.8; -91.8
Region Colorado
Country United States
DeBeque Formation is located in the United States
DeBeque Formation
DeBeque Formation (the United States)
DeBeque Formation is located in Colorado
DeBeque Formation
DeBeque Formation (Colorado)

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

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Wasatchian correlations in North America
Formation Wasatch DeBeque Claron Indian Meadows Pass Peak Tatman Willwood Golden Valley Coldwater Allenby Kamloops Ootsa Lake Margaret Nanjemoy Hatchetigbee Tetas de Cabra Hannold Hill Coalmont Cuchara Galisteo San Jose Ypresian (IUCS) • Itaboraian (SALMA)
Bumbanian (ALMA) • Mangaorapan (NZ)
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 is located in North America
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation
DeBeque Formation (North America)
Country  United States  Canada  United States  Mexico  United States
Copelemur
Coryphodon
Diacodexis
Homogalax
Oxyaena
Paramys
Primates
Birds
Reptiles
Fish
Insects
Flora
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
Wasatchian volcanoclastics

Wasatchian fauna

Wasatchian flora
Volcanic Yes No Yes No Yes No Yes No Yes No

See also

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References

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  1. ^ Bown & Kihm, 1981
  2. ^ DeBeque Formation at Fossilworks.org
  3. ^ Hirsch et al., 1997
  4. ^ "Collections". Museum of Natural History. 24 May 2016. Retrieved 10 November 2019.

Bibliography

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Further reading

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  • 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