Assuming that it is necessary that all decay methods change to the same extent, both proposed periods of accelerated decay are thought to have occurred during Creation and the Flood, and as such they were acts of God—literally. Reference: Radioactive Dating Explained - Part 2 Reference: The Unreliability of Radiometric Dating Reference: Potassium-Argon and Argon-Argon Dating Reference: RADIOISOTOPES IN THE DIABASE SILL ...So the likelihood of it occurring naturally is irrelevant. Furthermore a study of a survey of radiometric dates from Alaska showed no statistical tendency towards agreement.Another 35% were remeasured by the same method and therefore they only show the isotopic consistency of the rock.
6 Actually such agreement only goes back to about 1000 B. prior to that there starts to be significant disagreement.
Furthermore all three other dating methods are used for calibrating at least radiocarbon dating, removing them as independent tests.
Origins Archive under the title Index to Creationist Claims.
Radiometric dating assumes radioisotope decay rates are constant, but this assumption is not supported.
It turns out that the diffusion rate is about 10,000 times too fast for an old Earth, but it fits one or more bursts of accelerated decay in the past 4000 to 8000 years perfectly.