Hoff's Aliner Travels
A Travel Blog for US and Canadian Parks with Geological Notes

Sudbury Basin and the Very Large Tremendous Meteorite, Ontario
On the way to Killarney Provincial Park, I stopped at Sudbury, Ontario. Sudbury is on the south edge of a major geological structure caused by the second-largest known impact crater or astrobleme on Earth, as well as one of the oldest. Onaping Falls plunges 150 feet over the lip of what remains of the Sudbury Basin created at this time.
Details of asteroid/comet strike

In comparison with the top ten strikes hitting Earth, this was number two and the asteroid strike that killed off the dinosaurs was number 8 – luckily there were only one celled organisms around when this one struck!
The Ten Largest Asteroid/Comet Strikes on Earth

The large impact crater filled with magma containing nickel, copper, platinum, palladium, gold, and other metals. As a result of these metal deposits, the Sudbury area is one of the world’s major mining communities. The region is one of the world’s largest suppliers of nickel and copper ores. Most of these mineral deposits are found on the outer rim of the basin.

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