Environmental control on the occurrence of high-coercivity magnetic minerals  and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid  (Balkans)

Just, Janna; Nowaczyk, Norbert R.; Sagnotti, Leonardo; Francke, Alexander; Vogel, Hendrik; Lacey, Jack H.; Wagner, Bernd

doi:https://doi.org/10.5194/bg-13-2093-2016

Articles | Volume 13, issue 7

https://doi.org/10.5194/bg-13-2093-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Integrated perspectives on biological and geological dynamics...

https://doi.org/10.5194/bg-13-2093-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 7

Research article

|

08 Apr 2016

Research article |

| 08 Apr 2016

Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)

Janna Just, Norbert R. Nowaczyk, Leonardo Sagnotti, Alexander Francke, Hendrik Vogel, Jack H. Lacey, and Bernd Wagner

Data sets

Rock-magnetic properties of ICDP core 5045-1 (640 ka), Lake Ohrid Janna Just, Norbert R. Nowaczyk, Leonardo Sagnotti, Alexander Francke, Hendrik Vogel, Jack Lacey, Bernd Wagner https://doi.org/10.1594/PANGAEA.848639

Short summary

The magnetic record from Lake Ohrid reflects a strong change in geochemical conditions in the lake. Before 320 ka glacial sediments contain iron sulfides, while later glacials are dominated by siderite. Superimposed on this large-scale pattern are climatic induced changes in the magnetic mineralogy. Glacial and stadial sediments are characterized by relative increases of high- vs. low-coercivity minerals which relate to enhanced erosion in the catchment, possibly due to a sparse vegetation.

Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)

Data sets

Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)