Articles | Volume 14, issue 4
Biogeosciences, 14, 941–958, 2017
https://doi.org/10.5194/bg-14-941-2017
Biogeosciences, 14, 941–958, 2017
https://doi.org/10.5194/bg-14-941-2017

Research article 01 Mar 2017

Research article | 01 Mar 2017

Manganese and iron reduction dominate organic carbon oxidation in surface sediments of the deep Ulleung Basin, East Sea

Jung-Ho Hyun et al.

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The surface sediments of the Ulleung Basin (UB) in the East Sea are characterized by high organic carbon contents (> 2.5 %, dry wt.) and very high concentrations of Mn oxides (> 200 μmol cm−3) and Fe oxides (up to 100 μmol cm−3). For the first time in deep offshore sediments on the Asian margin with water depth over 2000 m, we report that Mn reduction and Fe reduction were the dominant organic carbon (Corg) oxidation pathways, comprising 45 % and 20 % of total Corg oxidation, respectively.
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