I have never said all the deposits were within one year. There are preflood deposits, flood deposits, early post flood, late post flood, etc.
I would expect similar sorting for various locations and organisms -- subject to the observed variations. These variations are expected and predicted by the variety of a global flood, but have to be accomodated post theory as overthrusts and underthrusts for conventional geology. This is not to say that some formations have been moved around - but the frequency of out of order layers is more consistent with a flood model.
Most index microfossils are marine plankton, especially the foraminifera and graptolites I was talking about earlier, so those would have had to be laid down either in pre-Flood oceans (in which case they couldn't possibly correspond to relatively recent strata like Jurassic rocks with oil/gas) or in Flood conditions, which indeed did last less than a year.
As for hydrological sorting of the organisms, here's an analogy to demonstrate the difficulty of a hydrodynamic sorting. (paying direct homage to the IIDB thread earlier referenced) Imagine being a computer-dump stratigraphist. One day you come across a dumpsite where, amazingly, all the 15" laptops are sorted by brand. Right at the bottom you have Acer 15" laptops, followed by Dell 15" laptops, followed by Toshiba 15" laptops, followed by Twinhead 15" laptops, and finally 15" Lenovo Thinkpads right at the very top. There is absolutely no mixing of brands for several feet. What's more, you don't find this order just in your own computer dump, other computer dump stratigraphists around the world are reporting that whenever 15" laptops of those brands are found in computer dumps, they are always found in that order.
The conventional computer-dump stratigraphic theory is that this shows that only one brand was ever producing 15" laptops at any time, and that these dumps were built up over many generations of laptop users, documenting how different generations used different brands. But some day someone comes up with a new explanation. "All these laptops were buried simultaneously," he says. "All the laptops you find in your dumps were simultaneously dropped from many huge cargo planes from many miles up in the air in one global computer-dump operation. How did they end up in that order? Well, they fell through many miles of air on the way down, which separated them into neat different layers based on their aerodynamic characteristics and buried them in that order you find worldwide."
Would you pay him any attention?
Flood sorting can't account for distinct microfossils either. Many of those marine plankton would have occupied the same environmental niches, and are roughly the same size and density, differing only in features discernible under the microscope. The only thing that could have separated their fossilization is the idea that the plankton of later layers simply weren't around when the older layers were being laid down - in some cases we can actually directly trace the evolution of these organisms through successive layers. But of course, that explanation is inaccessible to a flood theorist.