Problem with radioactive dating
Jim Mason made no reference to the Concordia line and I could not find any reference to the Concordia line on any articles on the CMI website, even though it is well known (e.g. Jim raised the issue of Helium concentrations in Zircon.
This is interesting, but it was not discussed at the meeting and I do not know how Justin would respond.
At their request, physicist Dr Jim Mason, of CMI Canada, reviewed the material from the meeting and his response was published on 2 April 2015 (see Response to Geochronology: Understanding the Uncertainties, a presentation by Dr Justin Payne).
Uranium-Thorium-Lead Method Ages" in Billions of Years Some soil from the Moon has been dated as more than a billion years older than the uniformitarian age for the Moon.