| Sadlerochit Formation | |
| Type: | Formation |
| Age: | Permian |
| Region: | Alaska |
| Country: | United States |
The Sadlerochit Group (formerly the Sadlerochit Formation) is a geologic formation in Alaska. It is the main source of oil and gas for the Prudhoe Bay Oil Field.[1] It preserves fossils dating back to the Permian period.