Pb Ratios

Some articles on pb, pb ratios:

Lead-lead Dating - The Formation of The Geochron
... Geochron was mainly attributed to Clair Cameron Patterson’s application of Pb-Pb dating on meteorites in 1956 ... The Pb ratios of three stony and two iron meteorites were measured ... thorium, while the crust and mantle would contain higher U/Pb ratios ...

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