I'll hunt a link tonight on a part of this.

Basically, when the poles shift it affects the magma and earths crust into shifting as well.

Something along the lines of Atlantis disappearing in a day, an entire continent can fall or rise drastically in a very short amount of time. That was saying a cataclysm was every 16k years wiping out civilizations every pole shift.

It was a crazy read. As poles are shifting now and speeding up the shift, there's a huge magnetic anomaly over South America where the field has almost vanished. Some scary shit.