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Geochemistry and chemical evolution of saline lakes of Western Mongolia |
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| Authors: | S L Shvartsev M N Kolpakova V P Isupov A G Vladimirov S Ariunbileg |
| Institution: | 1. Tomsk Department of Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences, Akademicheskii pr. 4, Tomsk, 634021, Russia 2. National Research Tomsk Polytechnic University, Lenina av. 30, Tomsk, 634050, Russia 3. Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russia 4. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia 5. National Research Tomsk State University, Lenina Av. 36, Tomsk, 634050, Russia 6. Institute of Geology and Mineral Resources, Mongolian Academy of Sciences, avenue Mira 63, Ulaanbaatar, 118, Mongolia |
| Abstract: | This paper presents data on the major and trace element composition of saline lakes of western Mongolia. The main geochemical types of lakes distinguished in the study are soda-, chloride-, and sulfaterich lakes. Lake water equilibria with major carbonate, sulfate, chloride, and other rock-forming minerals were calculated. The results show that the major factors controlling the formation of each lake type include evaporation and water-rock interaction processes, and the latter factor plays a critical role in freshwater and soda lakes and only a minor role in chloride lakes. Special attention was given to the soda lakes and the factors controlling lake water chemistry. |
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