Nature Communications (Sep 2017)

Silicate dissolution boosts the CO2 concentrations in subduction fluids

  • S. Tumiati,
  • C. Tiraboschi,
  • D. A. Sverjensky,
  • T. Pettke,
  • S. Recchia,
  • P. Ulmer,
  • F. Miozzi,
  • S. Poli

DOI
https://doi.org/10.1038/s41467-017-00562-z
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 11

Abstract

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Current estimates of dissolved CO2 in subduction-zone fluids based on thermodynamic models rely on a very sparse experimental data base. Here, the authors show that experimental graphite-saturated COH fluids interacting with silicates at 1–3 GPa and 800 °C display unpredictably high CO2 contents.