Looks like we might re-writing some text books.... I never really researched this at all I just took it as fact after seeing images in text books, I am surprised this didn't come up sooner because you would think scientists would have done soil examinations long ago....?
The Maniitsoq impact crater in Greenland is not believed to have been created by an asteroid impact. Instead, it is thought to have been created by a comet or other celestial body. The crater is estimated to be around 3.8 million years old and is one of the largest impact craters in the world. Scientists believe that the impact was so powerful that it caused the Earth's crust to rebound, creating a large crater.
Que?
Oolite Naval Attaché