Buried beneath a kilometer of snow and ice in northern Greenland, scientists have uncovered an asteroid impact crater, bigger than the area of Paris. This is the first time that a crater of any size has been found under one of Earth’s continental ice sheets, said researchers from the University of Copenhagen in Denmark. The researchers worked for the past three years to verify their discovery, initially made in 2015. The crater measures more than 31 km in diameter, placing it among the 25 largest impact craters on Earth, according to the study published in the Journal of Science Advances. It was formed when a kilometer-wide iron meteorite smashed onto northern Greenland. The condition of the well-preserved crater strongly suggests that it formed after ice began to cover Greenland, younger than 3 million years old and possibly as recently as 12,000 years ago, i.e., towards the end of the last ice age. The crater was first discovered in 2015 as the researchers inspected a new map of the topography beneath Greenland’s ice-sheet. They noticed an enormous, but previously undetected circular depression under Hiawatha Glacier. The 20-tonne iron meteorite sits in the country yard at the Geological Museum in Copenhagen.
Tags : #Greenland#Science & Techonology#Ice Age Crater