Radiometric dating and astronomical dating
Thus all K-Ar and Ar-Ar "dates" of volcanic rocks are questionable, as well as fossil "dates" calibrated by them." There is evidence that nuclear decay rates were grossly accelerated during a recent catastrophic episode or episodes.
Furthermore, there would be no way of knowing, because the Ar not from radioactive decay, except of course by external assumptions about the ages of the rocks.
Because polonium has a fleeting existence, the polonium radiohalos had to have formed within hours and days.
However, the source of the polonium had to be the uranium which was also at the same time producing the uranium radiohalos.
For certain mineral crystals it was found the uranium-lead radioactive age estimate was 1.5 billion years, yet the helium leak age was only about 6,000 years.
Because the latter is based on experimentally verified physical laws, it can be concluded that a tremendous amount of radioactive decay (which would take 1.5 billion years at today's decay rates) must have occurred catastrophically during some event in the last 6,000 years!
Further confirmation comes from diamonds, which form in the mantle and are carried by explosive volcanism into the upper crust and to the surface. obtained a K-Ar isochron "age" of 6.0±0.3 Ga for 10 Zaire diamonds, it was obvious excess was inherited from the mantle source areas of the magmas.