Meteorite Impact Reformulated Earth’s Crust, Study Shows

Publication: National Geographic News   Date: January 12, 2006   View Article

About 1.8 billion years ago, a meteorite or comet the size of Mount Everest slammed into what is now Canada.

According to James Mungall, a University of Toronto geologist, the impact turned part of the Earth’s crust inside out and dusted the surface with a rare metal.

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