Steen River impact structure
Impact structure in Alberta
From Wikipedia, the free encyclopedia
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]
Location
- Mackenzie County, Alberta, Canada
- 59°30′N 117°38′W
ConfidenceConfirmed
Diameter25 km (16 mi)
Age91 ± 7 Ma
Late Cretaceous
Late Cretaceous
| Steen River impact structure | |
|---|---|
  Location within Canada | |
| Location |
|
| Impact crater structure | |
| Confidence | Confirmed |
| Diameter | 25 km (16 mi) |
| Age | 91 ± 7 Ma Late Cretaceous |
| Exposed | No |
| Drilled | Yes |
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