Reply #3: Don't forget [View All]

[PetrusMonsFormicarum]

The New Madrid Fault line, a bizarre earthquake fault in the center of the North American tectonic plate (most faults are at or near edges/borders with other plates). In the 1800s a 'quake changed the course of the Mississippi.

Crustal rebound, however, is more likely. Funny how we are technically still within the "last ice age".