Subject: Could aftershocks occur 280 years after an earthquake?

In a Boston Globe article (Oct. 10), a Boston College professor (John Ebel)
said that a recent 1.8 intensity earthquake could have been an aftershock of a 
1727 earthquake that occurred a few miles away. That quake had an intensity of 
5.5. Is it possible that aftershocks could still occur and have such a strong 
intensity such a long time after the original quake? I wrote Prof. Ebel, but 
he didn't answer me.

Thank-you.
Kate, Grade 6

Re: Could aftershocks occur 280 years after an earthquake?