Old-earth creationist Kirk Bertsche has been critical of the RATE work on Carbon-14 dating diamonds, which indicate that they are not billions of years old, but less than 56,000 years (with evolutionary assumptions) and less than 7000 years old (with the correct biblical assumptions). Kirk Bertsche writes,1
The ICR (Institute for Creation Research) recently spent eight years on a project known as RATE (Radioisotopes and the Age of The Earth). The RATE team claims the results have yielded convincing and irrefutable scientific evidence of a young earth.
John Baumgardner, a geophysicist with expertise in tectonic modeling, presents experimental data claiming to show that all biological material contains intrinsic radiocarbon, no matter how old that material may be thought to be.2,3 He makes additional claims that even non-biological carbonaceous material contains intrinsic radiocarbon. He suggests that this radiocarbon is residual from the material’s creation. If true, his claims would have far-reaching implications for the ages of these materials.