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Earth Science
Extreme melting event defines Earth's early history
July 12th, 2005
Could Earth have had an even more violent infancy than previously imagined' New isotope data suggest that the Earth not only had a very violent beginning but also point to new information about our planet's chemical evolution. New and precise measurements of a neodymium isotope ratio (142Nd/144Nd) led Maud Boyet and Rick Carlson of Carnegie Institution's Department of Terrestrial Magnetism to the discovery that all terrestrial rocks have an excess of 142Nd compared to the expected building blocks of the planet. The results of the study were published in Science. Prior research suggested that the Earth formed by the accumulation of...
Source: Science Letter (2005-07-12)
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