[PRCo] Re: PA earthquakes

[Schneider Fred]

May be a long way from the nearest plate boundary Phil (I'm reading  
the USGS item you sent), but there is a vertical block fault line in  
my back yard (the home I own).   I'm now on the other side of the  
same hill and the corresponding fault zone is about four blocks south  
of me.   It does move.   But other than erosion and seeking a new  
equilibrium, nothing of geologic importance has happened in this era  
since a volcanic intrusion in the northern part of the county during  
the Triasssic era.   (Or did I forget to say that my degree is  
geology even though I haven't work in that field for 40 odd years.)

I had a fabulous professor that steered me into something that was  
interesting but something that perhaps I should not have been in.    
He steered me away from my first choice; I would up back in what I  
was pushed away from.


On Dec 27, 2008, at 1:56 PM, Phillip Clark Campbell wrote:

> "Earthquakes in the central and eastern U.S., although less  
> frequent than in the western
> U.S., are typically felt over a much broader region. East of the  
> Rockies, an earthquake
> can be felt over an area as much as ten times larger than a similar  
> magnitude earthquake
> on the west coast."
>
> http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ 
> ld1023196.php#summary
>
>
> Phil
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