These two independent and agreeing dating methods for of the age of two primary members of the solar system formed a strong case for the correctness of his answer within the scientific community.
There must have been speeded-up decay, perhaps in a huge burst associated with Creation Week and/or a separate burst at the time of the Flood.
There is now powerful confirmatory evidence that at least one episode of drastically accelerated decay has indeed been the case, building on the work of Dr Robert Gentry on helium retention in zircons.
A final step of cooling (from 25 Ma), exhibited by some of the thermal history models, may reflect reactivation of the ISZ and initiation of Cenozoic Altai mountain building.
The Late Plio-Pleistocene phase of mountain building coincides with a new change in the Palaeostress field, characterized by minor transpressional, right-lateral shear conditions.
U, is the only naturally occurring isotope with a fission half-life sufficiently short to produce a significant number of fission tracks through geologic time.
Uranium occurs in trace amounts in many minerals, and, because the spontaneous fission of U occurs at a known rate, it is possible to calculate the age of a mineral by determining the number of fission tracks and the amount of uranium it contains.
The most complete data available on annealing temperatures are for the two minerals most commonly used in fission-track studies, apatite and zircon.
Fission tracks in apatite are totally annealed at temperatures that range from about 105 °C (221°F) (for 10 yr).
From the eyewitness testimony of God’s Word, the billions of years that such vast amounts of radioactive processes would normally suggest had not taken place.
So it was clear that the assumption of a constant, slow decay process was wrong.
We present new zircon U/Pb, apatite fission track and fault kinematic data along the ISZ and consequently derived its tectonic history with emphasis on its formation and reactivation episodes.