Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 16
Articles | Volume 23, issue 16
https://doi.org/10.5194/bg-23-5741-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5741-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 16
Research article
 | 
20 Aug 2026
Research article |  | 20 Aug 2026

Spatial variability of Fe and Mn in surface lake sediments and its implications for paleoredox studies – a case study of Lake Łazduny (Poland)

Maurycy Żarczyński, Dirk Enters, Beata Szymczycha, and Wojciech Tylmann

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Short summary
Sediments of thirty-one short cores from a small lake in NE Poland were studied to better understand the elemental response of the deposits in relation to changing water column conditions. We found that iron (Fe) and manganese (Mn) burial is controlled by geochemical focusing – a tendency of elements to concentrate in a given spot – and that sediment lithology is intrinsically connected to prevailing oxygen conditions. This sheds new light on indicators of past water oxygenation.
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