Why can't they ever just say, "Probably from that there flood talked about in the Bible." *sigh*...(Or at least gilgamesh. ;-)
Nah, Noah's Flood took 40 days, this took a mere day. Plus it doesn't fit the pattern you'd see in Noah's flood with water, water everywhere. Here we have a volume of water moving from point A to point B, with Noah's flood you'd have water going every which-way and all terrain massively eroded. We simply don't see this. Additionally, this event can be clearly localized, and other strata don't show the same pattern seen here, with many clearly being laid down above land or in quiet streams and swamps.