Steen River impact structure
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 structure is not exposed at the surface. The original crater was partially eroded prior to burial, and lies under 200 m (660 ft) of sediments.[1]
| Steen River impact structure | |
|---|---|
  Location of the impact structure 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 |
| Country | Canada |
| Province | Alberta |
| District | Mackenzie County |
References
- "Steen River". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 15 September 2019.
External links
Further reading
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