ok, the stuff about the rapid formation of the rock layers that became the canyons of north america, are actually perfectly science

i was hoping i'd hear something to the effect of "the oceans boiled over and flooded onto the earth" and sure enough this scientist says so

i'm still quite sure the great flood was 12800 years ago, and 6400 years ago was the events of the colapse of the tower of Babel and the fire burning sodom and gomorrah

there is other evidence surrounding these other events

in The Apocalypse of Yajnavalkya they posit the theory it was meteors but that actually doesn't really make sense and is very unlikely

much more likely is that something caused the ocean to get punted over the sea... a pole shift, and epic geomagnetic disaster and seismic and volcanic activity and extreme cloud formation due to earth lacking its normal level of magnetic shielding