To think a flood would create multiple layered sediments does require some supernatural help.
Beautiful point. I would say that the real miracle was not the Flood, materializing a bunch of water is much easier than what God achieved after the flood. All traces of the flood were erased, entire populations were given false memories so they thought their civilizations were much older and they were given selective amnesia so they forgot all about the flood. Then God made the entire universe look older than it was.
When I see the amount of work he did I realize he really did repent. He must have felt so bad about the flood to go to all that extra work.
Those were awesome miracles and to think they didn't get recorded in any of the extant books of the Bible. sigh :-(
lfen