Huge Impact Crater Uncovered in Canadian Forest

Publication: National Geographic News   Date: November 25, 2008   View Article

About 1,100 years ago a space rock the size of a big tree stump slammed into western Canada, carving an amphitheater-like crater into the ground and littering it with meteorites, a new study found.

Oldest Rocks on Earth Discovered?

Publication: National Geographic News   Date: September 25, 2008   View Article

An expanse of bedrock along Hudson Bay, Canada, may be a chunk of crust that formed not long after the solar system was born nearly five billion years ago, according to a new study.

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.

© 2008-2010 Collected Writings By John Roach