Just a placeholder for now as I've not done enough to be post-worthy.

I do have a bit of a dilemma ... This continent suffered a cataclysmic event in the past which broke it apart (the fallout was largely limited only to this continent and some surrounding islands due to intervention by various deities). My question is how do I somewhat realistically break it apart?

I don't want to go to the bother of creating tectonic plates and all that shtuff. My current plan is to create a rough 'sketch' of the original continent, then use the "render clouds/threshold" method to create the new shattered look.

I'm open to other ideas if any one has them. I experimented with some of the various filters, etc. in Photoshop but with limited to poor results.