consider the New Madrid fault system:
In the winter of 1811-12, the central Mississippi Valley was struck by three of the most powerful earthquakes in U.S. history. Even today, this region has more earthquakes than any other part of the United States east of the Rocky Mountains. Government agencies, universities, and private organizations are working to increase awareness of the earthquake threat and to reduce loss of life and property in future shocks.
2 comments:
Did you once post a link to an article suggesting that the continuing activity was just late aftershocks of the 1812 quake?
I know I did this one touching on it,
http://elmtreeforge.blogspot.com/2008/06/back-to-survival.html
but can't remember offhand if did another. And the search isn't finding it, I'll dig around some later
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