Modern earthquakes in US could be aftershocks from quakes in the 1800s, scientists say
By Allison Chinchar, CNN (CNN) — After large earthquakes, there is an expectation that aftershocks could occur in the hours and days that follow, but aftershocks from some of the strongest earthquakes in recorded United States history may still be happening — nearly 200 years later, new research has found. Frequent aftershock activities stemming from
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