News of the WeekGeochemistry

New Geochemical Benchmark Changes Everything on Earth

See allHide authors and affiliations

Science  17 Jun 2005:
Vol. 308, Issue 5729, pp. 1723-1724
DOI: 10.1126/science.308.5729.1723

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


More-precise measurements of the neodymium isotope composition of meteorites, published online this week by Science (, show that geoscientists have been using an incorrect composition of the rocky Earth as a benchmark to infer everything from mantle compositions to the amount of interior heat being generated by radioactive decay.