Uranium lead dating meteorites
Many in both the scientific community and the general public around the world thus remain convinced of the earth’s claimed great antiquity.U-Pb radioisotope dating is now the absolute dating method of first choice among geochronologists, especially using the mineral zircon.A variety of analytical instruments have also now been developed using different micro-sampling techniques coupled with mass spectrometers, thus enabling wide usage of U-Pb radioisotope dating.The stunning improvements in the performance of mass spectrometers during the past four or so decades, starting with the landmark paper by Wasserburg et al.
(1969), have not been accompanied by any comparable improvement in the accuracy of the decay constants (Begemann et al.
Once radioactive decay of U and Th started after creation, daughter Pb isotopes were added inside the earth.
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