| Steen River crater | |
|---|---|
  Location of the crater in Canada | |
| Impact crater/structure | |
| Confidence | Confirmed |
| Diameter | 25 km (16 mi) |
| Age | 91 ± 7 Ma Late Cretaceous |
| Exposed | No |
| Drilled | Yes |
| Location | |
| Coordinates | 59°30′N 117°38′W / 59.500°N 117.633°W |
| Country | Canada |
| Province | Alberta |
| District | Mackenzie County |
Steen River is an impact structure in Alberta, Canada. It is 25 km (16 mi) in diameter and the age is estimated to be 91 ± 7 million years (Late Cretaceous). The crater is not exposed at the surface. The crater was partially eroded prior to burial, and lies under 200 m (660 ft) of sediments.[1]
