For 15 points, name this seismic zone in Missouri's bootheel, which caused a series of 1811-12 earthquakes in the Midwest and is named for a Spanish city.
One event arising from this feature led to the discovery that Thomas Jefferson's nephews Isham and Lilburn Lewis had hacked up their slave named George with an axe in retribution for breaking a pitcher belonging to their deceased mother. This feature is southwest of a similar one centered on the lower Wabash River valley. This feature produced an event that created (*) Reelfoot Lake, disrupted the Kentucky Bend, and caused backflow on the Mississippi River. For 15 points, name this seismic zone in Missouri's bootheel, which caused a series of 1811-12 earthquakes in the Midwest and is named for a Spanish city.
One event arising from this feature led to the discovery that Thomas Jefferson's nephews Isham and Lilburn Lewis had hacked up their slave named George with an axe in retribution for breaking a pitcher belonging to their deceased mother.
New Madrid seismic zone [or fault line] (pronounced "MAD-rid")