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Globe and Mail: Listening to the planet’s story, right down to its roots

May 5, 2015 — 

Ivan Semeniuk, the Globe and Mail‘s science reporter, wrote about an international effort to study North America’s seismic activity.

He quotes a U of M professor:

“You can’t understand something until you see it,” says Andrew Frederiksen, a seismologist at the University of Manitoba who was involved in a follow-up experiment called SPREE (Superior Province Rifting Earthscope Experiment). It entailed placing additional seismic stations all around Lake Superior to better map a billion-year old feature known as the mid-continent rift, where the tectonic plate on which North America rests once started pulling itself apart but then stopped.

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