It was probably shaped when a half a mile (800 meter) extensive iron meteorite struck northwest Greenland lower than three million years in the past. It was then lined in ice, hiding it from view, NASA stated.
A group of researchers from the College of Copenhagen’s Centre for GeoGenetics on the Pure Historical past Museum of Denmark first noticed the crater in July 2015.
The researchers had been inspecting a brand new map of the topography beneath Greenland’s ice sheet created by ice-penetrating radar knowledge once they observed a round despair below the Hiawatha Glacier.
“The crater is exceptionally well-preserved and that’s shocking as a result of glacier ice is an extremely environment friendly erosive agent that will have shortly eliminated traces of the affect,” stated Kurt Kjær, a professor on the Middle for GeoGenetics on the Pure Historical past Museum of Denmark and lead writer of the research.
Kjær stated the affect might need occurred on the finish of the final ice age, which might make it among the many youngest on the planet.
The analysis group plans to proceed investigating how the meteor’s affect affected the planet as an entire, NASA stated.