We are dealing with soils, not geological strata. It takes a lot longer to create geological strata than the last 10,000 years affords. That means we are dealing with archaeolog (sic), not geology; soils, not rocks. This is an important point!
My interest lie with biology, not "archaeology (your word, not mine)", but I'll give it a go. Why is this an important point?
The topic was the global flood. This is generally dated very close to 2350 BC.
Within this time span we should expect the evidence to be in the soil horizons, rather than in the rocks. In many areas the soils are 10,000 or so years old. This is where archaeologists, as opposed to geologists, are most pertinent.
Most of the creationist websites go to great lengths about rock layers millions of years old, whereas for the age of the global flood they should really be addressing much more recent soil layers.