Articles | Volume 17, issue 7
https://doi.org/10.5194/bg-17-2085-2020
https://doi.org/10.5194/bg-17-2085-2020
Research article
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16 Apr 2020
Research article | Highlight paper |  | 16 Apr 2020

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

Dario Fussmann, Avril Jean Elisabeth von Hoyningen-Huene, Andreas Reimer, Dominik Schneider, Hana Babková, Robert Peticzka, Andreas Maier, Gernot Arp, Rolf Daniel, and Patrick Meister

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Cited articles

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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.
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