Dating mt st helens rocks
Potassium-argon dating is done by destructively crushing and heating the sample and spectrally analyzing the resulting gases.
The equipment in use at the time at the lab employed by Dr.
And so, by any standard, it was scientifically meaningless for Dr.
In addition, the initial amount of K that you started with is never measured directly; instead, it is assumed to always be .0117% of the total potassium present, which is the known distribution in nature.
95% of these papers are geological jargon that will make your head spin: Page after page of chemical compositions, mineral breakdowns, charts and graphs, and all sorts of discussion of practically every last molecule found in the Mount St. It's important to note that his arguments are cogent and are based on sound geology, and are often mischaracterized by skeptics.
He did not simply use the wrong kind of radiometric dating as an ignorant blunder.
There would always be a certain amount of argon inside the mass spectrometer left over from previous experiments.
If the sample being tested is old enough to have significant argon, this leftover contamination would be statistically insignificant; so this was OK for Geocron's normal purposes. The second possibility is that so-called "excess argon" could have become trapped in the Mount St. This is where we find the bulk of the confusing complexity in Austin's paper and in those of his critics.