Denver Formation
The Denver Formation is a geological formation that is present within the central part of the Denver Basin that underlies the Denver, Colorado, area. It ranges in age from latest Cretaceous (Maastrichtian) to early Paleocene, and includes sediments that were deposited before, during and after the Cretaceous-Paleogene boundary event.
| Denver Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous-Paleocene | |
| Type | Geological formation |
| Unit of | D1 Sequence |
| Underlies | Dawson Arkose |
| Overlies | Arapahoe Formation |
| Thickness | up to 1,580 ft (480 m) |
| Lithology | |
| Primary | Claystone, siltstone, sandstone |
| Other | Conglomerate, tuff, coal, lava |
| Location | |
| Region | Colorado |
| Country | United States |
| Type section | |
| Named for | Denver, Colorado |
| Named by | Emmons, Cross and Eldridge (1896) |
The formation is known for its paleontological resources, including dinosaur remains that are found in the Late Cretaceous part of the formation, and it includes aquifers that are important sources of water for the area.
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