ESRF Highlights 2023

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PRINCIPAL PUBLICATION AND AUTHORS

Sub-arc mantle fugacity shifted by sediment recycling across the Great Oxidation Event, H. Moreira (a,b), C. Storey (b), E. Bruand (c), J. Darling (b), M. Fowler (b), M. Cotte (d,e), E.E. Villalobos-Portillo (d), F. Parat (a), L. Seixas (f), P. Philippot (a,g), B. Dhuime (a), Nat. Geosci. 16, 922-927 (2023); https:/doi.org/10.1038/s41561-023-01258-4 (a) Géosciences Montpellier, Université de Montpellier, CNRS (France) (b) School of the Environment, Geography and Geosciences, University of Portsmouth (UK) (c) Geo-Ocean, CNRS, Univ. Brest, Ifremer (France) (d) ESRF (e) Laboratoire d Archéologie Moléculaire et Structurale, University of Sorbonne (France) (f) Departamento de Engenharia de Minas, Universidade Federal de Ouro Preto (Brazil) (g) Departamento de Geofísica, Astronomia e Ciências Atmosféricas, Universidade de São Paulo (Brazil)

REFERENCES

[1] T.W. Lyons et al., Nature 506, 307-315 (2014). [2] S.W. Poulton et al., Nature 592, 232-236 (2021). [3] H. Moreira et al., Earth Planet. Sci. Lett. 551, 116558 (2020). [4] B.A. Konecke et al., Am. Mineral. 102, 548-557 (2017).

Fig. 105: Sulfur speciation in apatite inclusions in zircon, from data acquired at beamline ID21. The spectra of sulfur show a change from reduced (predominant S2- peak) to oxidised (predominant S6+ peak) in sub-arc magmas formed before and after the GOE.

Atmospherically altered sediments infiltrated the mantle and changed the redox state of investigated magmas.