The epicenter of the quake was Louisa County, Virginia, in the Piedmont Mountain range. I have a friend who was born down there, in Wedlock, Va. Well, actually, he was born just out of Wedlock, but still.
The geological blame for the shifting earth's crust goes to the Chopawamsic Fault, a thrust fault. And we've all committed them from time to time.
In Washington DC, several buildings - the Washington Monument and the National Cathedral among them - suffered severe structural damage. Here in Baltimore, the building most badly compromised was St Patrick's Church in Fells Point.
|Either a seismograph or an EKG|
If nothing else, the Eastern half of the United States showed once again that when something like this happens, phone networks are jammed in seconds. Everyone had to call everyone else to let them know that an earthquake had just occurred. And they called, as soon as their hands stopped shaking.