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    Uranium lead dating meteorites love and marriage dating

    The technique, however, has always been based on the assumption that the ratio of U was a constant 137.88 to 1 in all rocks.“This is something we assumed was the same number everywhere on the planet,” says Daniel Condon, head of chronology research at the British Geological Survey in Keyworth.There are at least 67 different uniformitarian (the present is the key to the past) methods of dating the earth other than long-age radiometric dating: each of which yield ages of less than 500 million years.Yet all these other science-based methods that point to a much younger age than 4.5 billion years for earth's age are ignored or rejected by evolution-believing people with degrees from college who apparently think that nobody (of importance) made them. Yet when asked why they reject all but the oldest science-based dating methods, the answer often given is that (they think) long-age radiometric dating is more reliable and that science settled the matter of the earth's age many years ago.Many minerals, such as zircon, contain minute quantities of two forms of uranium, with atomic weights of 235 and 238.Each decays at a constant rate into lead atoms with weights of 207 and 206, respectively.The uranium content of rocks is more variable than was thought, say geologists.

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    Correcting this oversight should put geological dating on a solid scientific footing for the first time.By comparing the amount of uranium in a sample with the amount of lead, geologists can work out when the rock formed.Uranium–lead dating of zircon crystals has been used to measure the age of everything from volcanic rocks to meteorites.These are the surfaces that we can get absolute ages for.For the others, one can only use relative age dating (such as counting craters) in order to estimate the age of the surface and the history of the surface.

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