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Steen River impact structure information


Steen River impact structure
Steen River impact structure is located in Canada
Steen River impact structure
Location of the impact structure in Canada
Impact crater/structure
ConfidenceConfirmed
Diameter25 km (16 mi)
Age91 ± 7 Ma
Late Cretaceous
ExposedNo
DrilledYes
Location
Coordinates59°30′N 117°38′W / 59.500°N 117.633°W / 59.500; -117.633 (Steen River crater)
CountryCanada
ProvinceAlberta
DistrictMackenzie 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 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]

  1. ^ "Steen River". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 15 September 2019.

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