Poths creation 68 radioisotope dating radiohalos accelerated decay
Combining rates and retentions gives a helium diffusion age of 6,000 ± 2,000 years.This contradicts the uniformitarian age of 1.5 billion years based on nuclear decay products in the same zircons.(§ is section of reference being cited.)Under the deep blue skies of northern New Mexico in the fall of 1974, drillmen labored to extract cores from a borehole called GT-2 (Figure 1) nearly three miles deep.
They found that “an almost phenomenal amount of He has been retained” in the zircons, despite them being small, hot, and allegedly old (Gentry et al., 1982a).
There were no published measurements for helium diffusion through biotite, the mineral surrounding the zircons.
Until we had reliable numbers for these diffusion rates, we could not say for certain that the large retentions require a young earth.
When creationists became aware of Gentry’s data, many of us thought that it would have been impossible for the zircons to have retained that much helium for even a million years, much less over a billion years.
Helium is a lightweight, fast-moving atom that does not attach itself to other atoms, so it diffuses (spreads out) through the atomic lattices of most minerals relatively fast.