The question remains, can this theory accurately predict the radiogenic helium levels in zircon specimens from sites other than the Fenton Hill well?
To answer this question, I will make some predictions based on RATE’s data and conclusions and then compare them with field observations.
According to the Curtin University press release, Professor Brent Mc Innes devised the idea of using the laser and helium dating technique on zircon crystals that come from a diamond-rich rock known as kimberlite.
Mc Innes’ team found that zircon crystals were very low in helium.
Nevertheless in our suite of young, chemically similar lavas the correlation between the K sbnd Ar age and the helium content is good enough to make the helium measurement worthwhile as a check on a possibly anomalous argon age, especially in a system where the additional labor required to make the helium is minimal.
The Columbia River basalt from which standard samples BCR-1 and BCR-2 were prepared was also dated. shows that this rock has retained even less of its radiogenic helium (30%) than the island basalts.
But there is a significant amount of helium still inside the zircons, showing their ages to be 6,000 /- 2,000 years.