![Canada earthquake](http://media.nzherald.co.nz/webcontent/image/jpg/201244/106480427_220x147.jpg)
A strong 7.7 magnitude earthquake has struck the Queen Charlotte Islands off the west coast of Canada, US government researchers said. The epicentre of the tremor, which occurred at 8:04 local time was located 139 kilometres south of the town of Masset, the US Geological Survey said.
The Pacific Tsunami Warning Center said there was no threat of a tsunami at this time.
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