Proceedings of the National Academy of Sciences of the United States of America

About the PNAS Member Editor
Name Allegre, Claude J.
Location Institut de Physique du Globe
Primary Field Geology
 Election Citation
Allegre has made major contributions to our understanding of the coupled evolution of Earth's mantle and continental crust, through a multi-isotopic tracer approach using radiogenic isotopes of Sr, Nd, Pb, Xe, Ar, He, Os, and Th. Among other things, these studies have provided evidence for very early degassing of volatiles from the Earth, with limited subsequent mixing between the upper mantle and the lower mantle and atmosphere.

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