Noah's flood was not only a world-wide catastrophe, it was also a process which involved several stages. It gives us a way to account for the stratigraphic column, Cambrian through Quaternary.
August 28th
March 25th
A major transition in the condition of planet Earth, like its interior changing from Tehom to Sheol, has to be in the Bible somewhere. We (me and the Holy spirit) found it in Amos 7:4.