Sudbury Basin impact crater in Ontario, Canada was formed due to comet impact. Sudbury Basin also called Sudbury Structure, formed 1.8 million years ago, is one of the oldest and second largest impact craters on the Earth.
This was revealed by a study titled On the Track of the Elusive Sudbury Impact: Geochemical Evidence for a Chondrite or Comet Bolide published in the latest issue of Journal Terra Nova. The lead author of the study is Joseph A Petrus.
About the Study
Researchers in their study collected samples from the site and subjected it to a detailed geochemical analysis.
Their analysis revealed the presence of chondritic platinum group element within the crater's fallback deposits. However, the distribution of these elements within the crater suggested that the impactor was a comet.
As a result, they concluded that world-famous Sudbury basin was created by a comet with a chondritic refractory component.
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