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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Articles | Volume 17, issue 7
Biogeosciences, 17, 2085–2106, 2020
https://doi.org/10.5194/bg-17-2085-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 2085–2106, 2020
https://doi.org/10.5194/bg-17-2085-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 16 Apr 2020

Research article | 16 Apr 2020

Authigenic formation of Ca–Mg carbonates in the shallow alkaline Lake Neusiedl, Austria

Dario Fussmann et al.

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Analytical Data Lake Neusiedl D. Fussmann, A. von Hoyningen-Huene, A. Reimer, D. Schneider, A. Maier, R. Peticzka, H. Babkova, G. Arp, D. Rolf, and P. Meister https://doi.org/10.1594/PANGAEA.909663

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Short summary
Dolomite (CaMg(CO3)2) is supersaturated in many aquatic settings (e.g., seawater) on modern Earth but does not precipitate directly from the fluid, a fact known as the dolomite problem. The widely acknowledged concept of dolomite precipitation involves microbial extracellular polymeric substances (EPSs) and anoxic conditions as important drivers. In contrast, results from Lake Neusiedl support an alternative concept of Ca–Mg carbonate precipitation under aerobic and alkaline conditions.
Dolomite (CaMg(CO3)2) is supersaturated in many aquatic settings (e.g., seawater) on modern...
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