Articles | Volume 15, issue 20
Biogeosciences, 15, 6329–6348, 2018
https://doi.org/10.5194/bg-15-6329-2018
Biogeosciences, 15, 6329–6348, 2018
https://doi.org/10.5194/bg-15-6329-2018
Research article
26 Oct 2018
Research article | 26 Oct 2018

Vivianite formation in methane-rich deep-sea sediments from the South China Sea

Jiarui Liu et al.

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Latest update: 25 Jun 2022
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Our work provides new insights into the biogeochemical cycling of iron, methane and phosphorus. We found that vivianite, an iron-phosphate mineral, is pervasive in methane-rich sediments, suggesting that iron reduction at depth is coupled to phosphorus and methane cycling on a much greater spatial scale than previously assumed. Acting as an important burial mechanism for iron and phosphorus, vivianite authigenesis may be an under-considered process in both modern and ancient settings alike.
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