Carbon dating quotes

As one answer to his critics, Kelvin produced a completely independent estimate — this time for the age of the Sun.His result was in close agreement with his estimate of the age of the earth.There were indeed powerful and unknown sources of energy fueling the Sun’s energy output.The same is true of the basis of Kelvin’s estimate of the age of the Earth.However, before this time some very popular indirect methods were available.For example, Lord Kelvin had estimated the ages of both the Earth and the Sun based on cooling rates.

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Chamberlain (1899) pointed out that Kelvin’s calculations were only as good as the assumptions on which they were based.In his study Rutherford measured the U and He (He is an intermediate decay product of U) contents of uranium-bearing minerals to calculate an age.One year later Boltwood (1907) developed the chemical U-Pb method.The answer of 25 million years deduced by Kelvin was not received favorably by geologists.Both the physical geologists and paleontologists could point to evidence that much more time was needed to produce what they saw in the stratigraphic and fossil records.

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