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Stony meteorites however, exhibited very high Pb ratios, indicating that these samples came from the crust or mantle of the planetesimal.Together, these samples define an isochron, whose slope gives the age of meteorites as 4.55 Byr.King other than the fact that she has 24,000 Instagram followers, so we assumed she was some kind of Insta-model.

He holds a journalism degree from Indiana University (yes he left San Diego for Bloomington, Indiana voluntarily). The Pb ratios of three stony and two iron meteorites were measured.The dating of meteorites would then help Patterson in determining not only the age of these meteorites but also the age of Earth’s formation.Patterson also analyzed terrestrial sediment collected from the ocean floor, which was believed to be representative of the Bulk Earth composition. Patterson to determine the age of the Earth in 1956.Because the isotope composition of this sample plotted on the meteorite isochron, it suggested that earth had the same age and origin as meteorites, therefore solving the age of the Earth and giving rise to the name 'geochron'. Animation shows progressive growth over 4550 million years (Myr) of the lead isotope ratios for two stony meteorites (Nuevo Laredo and Forest City) from initial lead isotope ratios matching those of the Canyon Diablo iron meteorite.

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Samples of iron meteorite from Canyon Diablo (Meteor Crater) Arizona were found to have the least radiogenic composition of any material in the solar system.

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