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- W4313892421 abstract "Abstract Early microbial life preferentially selected Fe, Mn, and Mo to form metalloproteins, whereas the majority of Zn-, Cu- and V- binding proteins emerged much later. These preferences are commonly interpreted in the context of evolving seawater chemistry, with free sulfide proposed as a key influence. While sulfidic waters scavenge Zn and Cu, they also remove Mo, and don’t scavenge V. What’s more, current geochemical data reflect an early ocean featuring anoxic, Fe 2+ and SiO 2 ( aq ) rich waters. Consistent with this, recent sedimentological work has uncovered abundant iron-silicate minerals in Archean and Palaeoproterozoic rocks (4.0–1.6 billion years ago). In this article we quantify metal partitioning during the nucleation and diagenesis of greenalite, an Fe(II)-silicate mineral, from seawater as well as hot hydrothermal fluids. Our data show that greenalite could have precipitated rapidly from Archean hydrothermal plumes, severely attenuating the delivery of key nutrients, in particular Cu, Zn and V. These results provide a mechanistic explanation for metal availability in Archaean oceans that is consistent with temporal patterns of metal utilisation predicted from protein structures and comparative genomics. Further, our data suggest natural greenalite may provide a novel window into ancient ocean chemistry that can be used to track metal availability in deep time." @default.
- W4313892421 created "2023-01-10" @default.
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- W4313892421 date "2023-01-10" @default.
- W4313892421 modified "2023-10-17" @default.
- W4313892421 title "Micronutrient availability in ferruginous, silica-rich Precambrian oceans" @default.
- W4313892421 doi "https://doi.org/10.21203/rs.3.rs-2312236/v1" @default.
- W4313892421 hasPublicationYear "2023" @default.
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