| Kulthieth Formation | |
|---|---|
| Stratigraphic range: Paleogene | |
| Type | Formation | 
| Sub-units | Burls Creek Shale Member | 
| Location | |
| Region | Yukon | 
| Country | Canada | 
The Kulthieth Formation is a geologic formation in the Yukon and coastal southern Alaska. The former Kushtaka formation is considered an extension of the Kulthieth Formation [1] It preserves fossils dating back to the late Paleocene though the Early Oligocene periods. [2]