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A significant fraction of the earth’s radioactive elements, particularly uranium and thorium, appear to be in the granitic rock of the upper continental crust.
An astonishing discovery made over the past 20 years is that, almost without exception, organic samples from every portion of the Phanerozoic record show detectable amounts of 14C!
Because of the enormous explanatory and predictive success of the plate tectonics model, we feel that at least some portion of plate tectonics theory should be incorporated into the creation model.
Only changing radioisotope decay rates in the past could account for these discordant isochron ‘ages’ for the same geologic event
For more than twenty years it has been known that the Rb-Sr and K-Ar systems give discordant ‘ages’ for Cardenas Basalt and associated Proterozoic diabase sills and dikes of Grand Canyon.
The study of this Mount St Helens dacite causes the more fundamental question to be asked—how accurate are K-Ar ‘ages’ from the many other phenocryst-containing lava flows worldwide?
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