The controversy of using radioactive dating mccartney still dating katie cassidy

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The five examples listed here are all cited in In each case the K-Ar method is applied to a historical lava flow of known age less than 2200 years, and the radiometric age is calculated to be between a few hundred thousand and a few million years.The 79 CE Mt Vesuvius flow, the dating of which is described above, also contained excess 40Ar.Often it will be the isotopic age of the common source of the samples.That result could also be the age of the samples themselves, but only in the case where their common source was isotopically homogeneous -- i.e., zero-age -- when the samples formed from it.Thus the large majority of historic lava flows that have been studied either give correct ages, as expected, or have quantities of excess radiogenic 40Ar that would be insignificant in all but the youngest rocks.

Thus any potential error due to excess 40Ar was eliminated by the use of this technique, which was not available when the studies by Dalrymple (1969) and Krummenacher (1970) were done.Austin simply assumes that the first explanation is correct and then he proceeds to use the 'presence' of 'excess argon' in his samples to question the reliability of all K-Ar dates on other rocks and minerals.This is the logical fallacy of composition (Copi and Cohen, 1994).If the radioactive decay rates were miraculously increased during the flood, then the development of orbital parameters must have been accelerated in just the same way.This section lists examples of radiometric dates which are inconsistent with known dates, inconsistent with each other, seriously inconsistent with the uniformitarian timescale, or inconsistent with other evidence.

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In fact, as discussed above, the selection of non-cogenetic samples is sometimes used intentionally by isotope geologists.

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