The Earth was flooded for about a year, including the 40 days of rain. Sediments were deposited which were later eroded, metamorphosed and lithified as the waters subsided.
Cenozoic/Upper Noachian (Subsidence)
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.