The fountains of the great deep burst open because the expansion of hell caused the waters of the great deep to heat up to boiling point where they were in contact with the core.
Paleozoic/Lower Noachian (Deluge)
The Timeline for Noah’s Flood
The timeline for Noah's flood comes directly from scripture and this is the framework that we use to interpret evidence from the stratigraphic column.
Continued Inundation of Low-lying Continents
"Continued inundation of low-lying continents?" That sounds like a world-wide flood. In fact, it's a way of saying world-wide flood without using the words world-wide flood. It's an ecosystem, not a period of time.