Beaverhead impact structure

Impact structure in the United States From Wikipedia, the free encyclopedia

Beaverhead impact structuremap

The Beaverhead impact structure is the second-largest impact structure within the U.S. It lies within the states of Idaho and Montana. Estimated at 60 kilometers (37 mi) in diameter, it is among the largest impact structures on Earth.

Quick Facts Impact crater/structure, Confidence ...
Beaverhead impact structure
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A shatter cone produced by the Beaverhead impact
Impact crater/structure
Confidenceconfirmed[1]
Diameter60 kilometres (37 mi)
Age600 million years
ExposedYes
DrilledNo
Location
Coordinates44°36′N 113°0′W
CountryUnited States
StateIdaho, Montana
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Beaverhead impact structure
Location of Beaverhead impact structure in Idaho
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With an estimated age of 600 million years (Neoproterozoic), the impact's original shatter cones along the impact structure's perimeter provide some of the structure's only remaining visible evidence.

It is named for the Beaverhead region of southwestern Montana in which it was first discovered.

See also

References

Further reading

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