


https://answersingenesis.org/geology/rock-layers/sedimentary-record-demonstrates-minimal-flooding-continents-during-sauk-deposition/
Megasequences are repeating layers of flood waters: conglomerate, sand, shale, and limestone (then unconformity) as materials become sorted by water based on weight and settling. The five Mega-sequences found on earth are supposed as billions of years of geologic time however, these may also be explained by changing sea levels as global flood waters passed over the continents and receded, then repeated.
https://answersingenesis.org/geology/rock-layers/sedimentary-record-demonstrates-minimal-flooding-continents-during-sauk-deposition/