> Perhaps you should check out the 'isochron' method. This allows
> one to detect exactly such occurrences.
The isochron method can't be used with most radiometric methods.
It can be used with the uranium decay chain. But, as we really don't
know how the stuff forms in the first place, I wonder if it's possible
that the nature of creation can produce false isochrone evidence.
Hydrogen doesn't fuse into uranium in one step.