When someone throws a brand new geological situation at me and asks me to explain it in terms of the Flood, the best I can do is perhaps think it out in terms of the Flood hypothesis. Asking for evidence for something I've been acquainted with for all of a few hours is rather beyond beyond. The request is really only a way of saying Take your creationism elsewhere, it doesn't belong here.
And you know what, that's correct, arguing creationism here is an exercise in masochism.