Articles | Volume 16, issue 24
Biogeosciences, 16, 4829–4849, 2019
https://doi.org/10.5194/bg-16-4829-2019

Special issue: Assessing environmental impacts of deep-sea mining...

Biogeosciences, 16, 4829–4849, 2019
https://doi.org/10.5194/bg-16-4829-2019
Research article
20 Dec 2019
Research article | 20 Dec 2019

Small-scale heterogeneity of trace metals including rare earth elements and yttrium in deep-sea sediments and porewaters of the Peru Basin, southeastern equatorial Pacific

Sophie A. L. Paul et al.

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Cited articles

Abbott, A. N., Löhr, S., and Trethewy, M.: Are Clay Minerals the Primary Control on the Oceanic Rare Earth Element Budget?, Front. Mar. Sci., 6, 504, https://doi.org/10.3389/fmars.2019.00504, 2019. 
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Baldermann, A., Warr, L. N., Letofsky-Papst, I., and Mavromatis, V.: Substantial iron sequestration during green-clay authigenesis in modern deep-sea sediments, Nat. Geosci., 8, 885–889, https://doi.org/10.1038/ngeo2542, 2015. 
Barrett, T. J. and Jarvis, I.: Rare-earth element geochemistry of metalliferous sediments from DSDP Leg 92: The East Pacific Rise transect, Chem. Geol., 67, 243–259, https://doi.org/10.1016/0009-2541(88)90131-3, 1988. 
Bau, M.: Rare-earth element mobility during hydrothermal and metamorphic fluid-rock interaction and the significance of the oxidation state of europium, Chem. Geol., 93, 219–230, https://doi.org/10.1016/0009-2541(91)90115-8, 1991. 
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Short summary
We studied the upper 10 m of deep-sea sediments, including pore water, in the Peru Basin to understand small-scale variability of trace metals. Our results show high spatial variability related to topographical variations, which in turn impact organic matter contents, degradation processes, and trace metal cycling. Another interesting finding was the influence of dissolving buried nodules on the surrounding sediment and trace metal cycling.
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