DesertFox
07-16-2007, 10:31 PM
A meteorite that slammed into Earth 1.85 billion years ago at the present site of Sudbury, Ontario, is now making news 500 miles away in northeastern Minnesota.
... University of Toronto geology professor James Mungall, who has researched and written about the Sudbury meteorite for the scientific journal Nature, said the meteorite was probably traveling between 12 and 37 miles per second when it hit Earth with a force equal to several billion Hiroshima-sized atomic bombs. Temperatures soared above 10,000 degrees, 6,500 cubic miles of rock melted and the huge crater formed.
"The object was probably between 10 and 20 kilometers in diameter, and some of us think it was more likely to have been a comet than an asteroid, but there is no definitive evidence," Mungall said.
More (http://www.cbsnews.com/stories/2007/07/16/tech/main3060887.shtml)
... University of Toronto geology professor James Mungall, who has researched and written about the Sudbury meteorite for the scientific journal Nature, said the meteorite was probably traveling between 12 and 37 miles per second when it hit Earth with a force equal to several billion Hiroshima-sized atomic bombs. Temperatures soared above 10,000 degrees, 6,500 cubic miles of rock melted and the huge crater formed.
"The object was probably between 10 and 20 kilometers in diameter, and some of us think it was more likely to have been a comet than an asteroid, but there is no definitive evidence," Mungall said.
More (http://www.cbsnews.com/stories/2007/07/16/tech/main3060887.shtml)