Nature Communications (May 2021)

Helium in diamonds unravels over a billion years of craton metasomatism

  • Yaakov Weiss,
  • Yael Kiro,
  • Cornelia Class,
  • Gisela Winckler,
  • Jeff W. Harris,
  • Steven L. Goldstein

DOI
https://doi.org/10.1038/s41467-021-22860-3
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 11

Abstract

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Diamonds encapsulate the deep Earth fluids that form them, providing windows to deep mantle processes. This study constrains their ages, based on uranium-thorium-to-helium radioactive decay in the fluids and helium diffusivity in diamond, and relates diamond formation to geological events in Southern Africa.