Predictions were made for the diffusion rates based on two different relationships — one for an evolutionary time frame of billions of years, and one for a Creationist time frame of thousands of years.
Only when young-earth creationists produce convincing quantitative, scientific evidence that the earth is young will they be worth listening to on this important scientific matter.
Helium atoms are pretty thin and can seep through solid rock.
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Contrary to Swenson's uninformed claim that ' Dr Austin carefully designed the research to counter all possible objections', Austin clearly demonstrated his inexperience in geochronology when he wasted a lot of money using the K-Ar method on the wrong type of samples.
Description: Rather than invoking unproven miracles and plastering over the issue with 'God did it', scientists seek more profound, meaningful and useful natural answers. Even when phenocrysts as in Austin's Figure 4 and xenocrysts can be seen with an optical microscope, they can be extremely difficult, if not impossible, to effectively separate from the glass.