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Wyoming Collision Crater Field

A drone image of a crater formed in Sheep Mountain. Credits: Kent Sundell, Casper College

Dozens of small impact craters measuring 10-70 m in size have been found in southeastern Wyoming. A team of US and German geoscientists discovered these ancient craters in exposed Permian (280 million years ago) sedimentary layers. After discovering the first craters, the team initially suspected that they were scattered fields of craters formed by the collapse of asteroids that entered the atmosphere. However, this interpretation was ruled out as more and more craters were discovered over a wide area.

Many of the craters are clustered into groups and are arranged along the rays. In addition, some craters are oval, allowing the reconstruction of the incoming path of the impactor.Reconstructed Orbit There is a radial pattern.

Project leader Thomas Kenkmann, a professor of geology at the University of Freiburg, Germany, said: “Secondary craters around larger craters are well known from other planets and satellites, but have never been found on Earth.”

  • Secondary Crater on Earth: Wyoming Collision Crater Field

    A drone image of a crater formed in Sheep Mountain. Credits: Kent Sundell, Casper College

  • Secondary Crater on Earth: Wyoming Collision Crater Field

    A drone image of a crater formed in Sheep Mountain. Credits: Kent Sundell, Casper College

The team calculated the trajectory and used mathematical simulations to model the formation of craters. All craters found so far were located 150-200 km from the estimated primary crater and were formed of blocks sized 4-8 m that collided with the Earth at a velocity of 700-1000 m / s. ..The team The source is crater It is about 50-65 km in diameter and should be buried deep under young sediments in the northern Denver basin near the border between Wyoming and Nebraska.


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Quote: Secondary craters on earth: Wyoming collision crater field (February 14, 2022) is from https: //phys.org/news/2022-02-secondary-cratering-earth-wyoming-impact.html 2022 I got February 14th

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Wyoming Collision Crater Field

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