"The idea of millions of years was seriously undermined in my postgraduate years when some conservative Roman Catholic pro-life friends invited me to a screening of the then new
Evolution: Fact or Belief, made by European Catholic creationists. This included the work by French sedimentologist Guy Berthault. His experiments, sometimes working with non-creationists, have shown that fine layers do not need to be formed one at a time, over many years. Rather, many layers can form
all at once by a self-sorting mechanism during the settling of differently sized particles, as long as there is horizontal flow.
Experiments on stratification of heterogeneous sand mixtures In one of Berthault’s experiments, finely layered sandstone and diatomite rocks were broken into their constituent particles, and allowed to settle under running water at various speeds. It was found that the
same layer thicknesses were reproduced, regardless of flow rate. This suggests that the original rock was produced by a similar self-sorting mechanism, followed by cementing of the particles together—not over millions of years.
Experiments on lamination of sediments The prestigious journal
Nature reported similar experiments by evolutionists a decade after Berthault’s first experiments.
Also, recent catastrophes show that violent events like the Flood described in Genesis could form many rock layers very quickly. The Mt St Helens eruption in Washington State produced 7.6 metres (25 feet) of finely layered sediment in a
single afternoon!
Another problem for the millions of years scenario was ‘flat gaps’ or ‘paraconformities’. To explain, think of the jagged surface of most landscapes, due to erosion. Streams and rivers keep cutting deeper gullies, canyons, and valleys. But often the layers below them are completely smooth. Yet they are often claimed to have been deposited millions of years apart. But if the top of each layer had been exposed for millions of years, it should be as jagged as the surface.
A more obvious problem was the fossils. We simply don’t see fish fossilizing at the bottom of rivers and oceans. Nor are sheep and cattle farms filled with fossils. Why not? Because most dead animals are scavenged and disintegrate quickly. So the fact that we have fossils
at all shows that they must have been buried rapidly." (from this article:
Now a Creationist - creation.com)
The flood would have provided horizontal flow so the self sorting mechanism would apply.