Originally Posted by
babalou1
Again. The OG's bunkered down into the planet. Going after them, again, would have destroyed the planet and the world soul along with it.
The Old God's that we have killed, have come up from to the surface so to speak. We destroyed them in a way that did not harm the planet.
This is according to Chronicles v1.
And also..
It was not necessarily anything related to their deaths which caused the Cataclysm. Consequences of killing an Old God were explored with the sha, and then expanded upon in Chronicle.