Bridger Formation
The Bridger Formation is a geologic formation in southwestern Wyoming. It preserves fossils dating back to the Bridgerian and Uintan stages of the Paleogene Period. The formation was named by American geologist Ferdinand Vandeveer Hayden for Fort Bridger, which had itself been named for mountain man Jim Bridger. The Bridger Wilderness covers much of the Bridger Formation's area.
| Bridger Formation | |
|---|---|
| Stratigraphic range: Bridgerian - Uintan | |
Grizzly Buttes, a major feature of the Bridger Formation | |
| Type | Formation |
| Underlies | Bishop Conglomerate |
| Overlies | Green River Formation |
| Thickness | 215 feet (66 m) - 270 feet (82 m) |
| Location | |
| Region | Wyoming |
| Country | United States |
| Type section | |
| Named for | Bridger Wilderness |
| Named by | F.V. Hayden |
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