| 词条 | Beaverhead crater |
| 释义 |
| name = Beaverhead crater | map = Idaho | map_size = 250 | map_caption = Location of Beaverhead crater in Idaho | coordinates = {{coord|44|36|N|113|0|W|format=dms|display=inline,title}} | confidence = confirmed [1] | diameter = {{convert|60|km|mi}} | age = 600 million years | exposed = Yes | drilled = No | country = United States | state = Idaho, Montana }} The Beaverhead crater is an impact structure spanning the U.S. states of Idaho and Montana. Estimated at {{convert|60|km|mi|sp=us}} in diameter, it is one of the largest impact craters on Earth. With an estimated age of 600 million years (Neoproterozoic), the impact's original shatter cones along the crater'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
References1. ^{{cite Earth Impact DB | name = Beaverhead | accessdate = 2015-01-02}} Further reading
4 : Proterozoic impact craters|Impact craters of the United States|Landforms of Idaho|Landforms of Beaverhead County, Montana |
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