Map of the bedrock topography beneath the ice sheet and the ice-free land surrounding the Hiawatha impact crater. The structure is 31 km wide, with a prominent rim surrounding the structure.

Zircon forms after major impact events ... The post Meteorite Crater Discovered on Google Maps appeared first on Explorersweb ...

"We thought it looked like an impact crater," Heinrich said ... minute quadrangle is a geological survey-produced topographic map covering an area spanning seven and one-half minutes of latitude ...

After firing up Google’s map software to plan a camping trip ... The key in declaring the site a meteorite impact crater centers around the existence of shatter cones, basically branch-like ...

The chemical makeup of mineral inclusions preserved in impact glass hints at the site of a missing impact crater.