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)
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.
Brachiopods
Brachiopods aren't an evolutionary dead-end which got wiped out in a mass extinction. Well, there was a mass extinction, but it didn't wipe out the Brachiopods. Many were buried in Noah's flood but many alive today.
Scorpions and Millipedes, first Air-breathing Animals
The first air-breathing animals to appear in the stratigraphic column were the ones who just happened to be living on the beach or at the coast during Noah's flood.
First Vascular Plants in mid-Silurian
The first vascular plants that were buried in Noah's flood are on top of the beach sand which is full of dead scorpions because they were growing in the dunes inland of the beach.
Low-lying Continents with Some Epicontinental Flooding
"Low lying continents with some epicontinental flooding". That's how you describe a world-wide flood without saying the words "world-wide flood."
Mild Climates
We're already seen the descriptions of the Cambrian and Ordovician start with a statement on climate. It's a subtle way to pay homage to the fact that a vast amount of water moved a vast amount of sediment.
August 6th
Silurian sediments originate on land near the ocean (the beach). The closest sediment to the ocean was the first terrestrial sediment deposited in Noah's flood.