Nature Communications (Nov 2017)

Redox-independent chromium isotope fractionation induced by ligand-promoted dissolution

  • Emily M. Saad,
  • Xiangli Wang,
  • Noah J. Planavsky,
  • Christopher T. Reinhard,
  • Yuanzhi Tang

DOI
https://doi.org/10.1038/s41467-017-01694-y
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 10

Abstract

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The chromium (Cr) isotope system has emerged as a potential proxy for tracing Earth’s atmospheric evolution based on a redox-dependent framework. Here the authors show that ligand-complexation, a redox-independent process, must be considered when using Cr isotope signatures to diagnose atmospheric oxygen levels.