News and Views
Nature Geoscience 1, 812 - 813 (2008)
doi:10.1038/ngeo372
Subject Category: Geochemistry
Chemical geodynamics: The enduring lead paradox
Albrecht W. Hofmann1
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Albrecht W. Hofmann is at the Max-Planck-Institut für Chemie, Geochemistry Division, Postfach 3060, 55020 Mainz, Germany.
e-mail: hofmann@mpch-mainz.mpg.de
Abstract
The Earth's known rock reservoirs contain more radiogenic lead than expected on average. Mantle-derived rocks with highly unradiogenic lead — as discovered in the Horoman massif — may bear witness to a previously unsampled, complementary reservoir.
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