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The East Coast earthquake came from a fault that's been asleep for hundreds of millions of years but suddenly reactivated
The earthquake that just shook the East Coast was caused by one of dozens of ancient fault lines that have lain ... a geologist at the US Geological Survey, said in a briefing on Friday.
Three earthquakes recorded near major California fault line
(FOX40.COM) — On Thursday night, three earthquakes were detected near California’s most active fault, the San Andreas Fault, ...