Therefore, are isochron methods foolproof?
Into the real life, there’s nothing perfect. There are several isochron outcomes that are clearly incorrect. The importance of isochron plots is really a bit counter-intuitive in some cases. And you will find understood procedures which can produce a incorrect isochron age. Does this keep space to discard isochron dating as entirely unreliable? Certainly not.
The big most of isochron dating answers are according to the conventional age and reputation for our planet. In the event that outcomes were basically random numbers, that could never be the expected distribution of outcomes. Look at tables of meteorite isochron ages into the chronilogical age of our planet FAQ for instance.
“Counter-intuitive” many years — as an example outcomes which suggest an occasion sooner than the full time of crystallization for the sampled item — are often generated by improper collection of examples, and will be prevented generally in most cases. For just one example, see my Critique of ICR’s Grand Canyon Dating Project.