So what about SILT and dating????

The problem there is in the nature of the sediments out in the abyssal plains of the oceans - a kilometer's worth of sediment made from either 1) particles so fine that they take months to settle from the surface, with no coarse stuff mixed in or 2) skeletons of shelled microorganisms that grow only in the lighted top 100 meters of ocean - perhaps a centimeter's worth of sediment could grow in a year under the most wildly favorable conditions possible. And those conditions would most certainly exclude the murky, turbulent waters of The Big Flud - no sunlight gets through that muddy water.

Sometimes - more usually coccolithophores or other calcium carbonate-shelled organisms. I don't know what's immediately underneath the Delta, and I don't even know if it's ever been drilled that deep. There are salt deposits, indicating shallow seas, way down there along lots of the Gulf coast, though. Bill Birkeland, are you around? In the Atlantic, it's basalt that was erupted at the Mid-Atlantic Ridge. It has "stripes" of remanent magnetism in that basalt that show that it was emplaced over tens of millions of years.

But the sediments of the delta ARE in a hole of sorts - the underlying rocks are warped down very severly - 7 miles' worth - relative to the same strata east or west of the river. The delta itself is flea-sized against the whole Gulf of Mexico, anyway. You may be representing current creationist "theory" on the subject accurately, but, if so, it shows once again just how ad hoc and lame their typical arguments are.

Heavy water?