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Minimal biomass deposition in banded iron formations inferred from organic matter and clay relationships

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  • Matthew S. Dodd

    (University College London
    University College London
    University College London
    China University of Geosciences)

  • Dominic Papineau

    (University College London
    University College London
    University College London
    China University of Geosciences)

  • Franco Pirajno

    (The University of Western Australia)

  • Yusheng Wan

    (Institute of Geology, Chinese Academy of Geological Sciences)

  • Juha A. Karhu

    (University of Helsinki)

Abstract

The cycling of iron and organic matter (OM) is thought to have been a major biogeochemical cycle in the early ferruginous oceans which contributed to the deposition of banded iron formations (BIF). However, BIF are deficient in OM, which is postulated to be the result of near-complete oxidation of OM during iron reduction. We test this idea by documenting the prevalence of OM in clays within BIF and clays in shales associated with BIF. We find in shales >80% of OM occurs in clays, but

Suggested Citation

  • Matthew S. Dodd & Dominic Papineau & Franco Pirajno & Yusheng Wan & Juha A. Karhu, 2019. "Minimal biomass deposition in banded iron formations inferred from organic matter and clay relationships," Nature Communications, Nature, vol. 10(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12975-z
    DOI: 10.1038/s41467-019-12975-z
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