Argon argon dating
This is truly a case of the blind leading the blind!! B., 1969, '40Ar/36Ar Analyses of Historic Lava Flows,' Earth Planet. Harrison, 1999, Geochronology and Thermochronology by the 40Ar/39Ar Method, Oxford University Press, New York.Thus this data is strongly supportive of mainstream geology.' [author's emphasis] As discussed at Ar-Ar Dating Assumes There is No Excess Argon? 49), the ONLY sample of the 26 that had significant excess argon also had very noticeable xenoliths (older rock contaminants that were incorporated into the magma as it rose through the Earth to the surface). Lanphere, 1969, Potassium-Argon Dating, Freeman, San Francisco. Furthermore, as discussed in Funkhouser and Naughton (1968, p. And in 25 times out of 26 tests there is no excess argon or there is so little excess argon that it will make only a tiny error, if any, in the final date for rocks millions of years old. Thus Dalrymple’s data is not consistent with a young Earth whatsoever. The 5 samples with excessively old K-Ar dates include a Hualalai basalt from Hawaii (K-Ar 'dates' of 1.05 and 1.19 million years; the basalt erupted in 1800-1801 AD), two Mt.
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4603), once the xenoliths were removed, the remaining matrix provided an expected date of 'zero years' (also see: Fresh Lava Dated as 22 Million Years Old).
As further discussed in Dalrymple and Lanphere (1969, p. 91-92), Dalrymple concludes that excess argon is rare in volcanic rocks. B., 1991, The Age of the Earth, Stanford University Press, Stanford, California, USA.
Indeed, if Dalrymple’s data is representative, 3 times out of 26 the K-Ar method will give a too young date (though by only an extremely trivial amount for a rock that is really millions of years old).
The one case that would have produced a significant error, the Hualalai flow in Hawaii, was expected (see the previous essay). Naughton, 1968, 'Radiogenic Helium and Argon in Ultramafic Inclusions from Hawaii,' J.