Credit: Uwe Dedering @ Wikipedia
Another crater controversy ends as two different dating methods produced the same result.
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Danish and Swedish researchers have dated the enormous Hiawatha impact crater, a 31 km-wide asteroid crater buried under a kilometer of Greenlandic ice, says the University of Copenhagen.
The dating ends speculation that the asteroid impacted after the appearance of humans and opens up a new understanding of Earth’s evolution in the post-dinosaur era.
Ever since 2015, when researchers at the University of Copenhagen’s GLOBE Institute discovered the Hiawatha impact crater in northwestern Greenland, uncertainty about the crater’s age has been the subject of considerable speculation.
Could the asteroid have slammed into Earth as recently as 13,000 years ago, when humans had long populated the planet? Could its impact have catalyzed a nearly 1,000-year period of global cooling known as the Younger Dryas?
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