The problems with the unproven assumptions that underpin the radioisotope age-dating methods for volcanic rocks are well-documented in the conventional (uniformitarian) literature. Assumed initial conditions are violated by inheritance from mantle and crustal sources. The required closed-radioisotope, parent-daughter systems are violated regularly by open-system behavior—contamination, loss by diffusion, and weathering. And there is good experimental evidence of past accelerated-radioisotope decay in a recent catastrophic event. Thus, the millionsof-years ages for volcanic rocks and the age-dating radioisotope methods used to obtain them are totally unreliable. However, the inflated radioisotope ages often agree with the stratigraphic and biostratigraphic positions of the volcanic strata in the rock record, which is consistent with accelerated radioisotope decay during the recent global Genesis Flood cataclysm.