Hiawatha Crater Dated To A Few Million Years After Dinosaurs’ Extinction Impact - Forbes

Scientists have long debated whether a massive impact crater buried beneath Greenland's ice sheet had anything to do with a sudden cold snap and megafauna extinction 10,000 years ago. However, a new analysis shows the crater is far older.

Digital Elevation Model showing an impact crater beneath the ice sheet of Greenland. Kjæer et al. 2018/Science Advances Danish and Swedish researchers have dated the enormous Hiawatha impact crater… [+3818 chars]

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