Difference between radioactive decay radiometric dating
by Steve Taylor, Andy Mc Intosh, and Tas Walker Radiohalos are spherical, microscopic-sized discolourations in crystals.
Adam was created on day 6, so there were five days before him. So a simple calculation is: At this point, the first five days are negligible.
In cross-section on a microscope slide, they appear as a series of tiny concentric rings, usually surrounding a central core (Figure 1).
This central core is (at least initially) radioactive.
He would have answered that the Earth was ancient, that there had not been a Noachian flood, and that the species of life had not been fixed over the history of Earth.
In short, Genesis was an allegory and not literal history.