Dalles Formation
| Dalles Formation | |
|---|---|
| Stratigraphic range: Neogene | |
| Type | Formation |
| Location | |
| Coordinates | 45°24′29″N 121°20′10″W / 45.408°N 121.336°W |
| Region | Wasco County, Oregon |
| Country | United States |
The Dalles Formation is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period.