Alamosa Formation
| Alamosa Formation | |
|---|---|
Stratigraphic range: | |
| Type | Formation |
| Location | |
| Region | Colorado |
| Country | United States |
The Alamosa Formation is a geologic formation in Colorado. It preserves fossils. The formation was deposited by Lake Alamosa, a paleolake that existed from the Pliocene to the middle Pleistocene.