E3S Web Conf.
Volume 98, 201916th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference)
|Number of page(s)||6|
|Section||Geochemistry of Natural Waters: From Atmospheric Precipitations to Deep Brines|
|Published online||07 June 2019|
Hydrogeochemistry of thermal waters of the Baikal Rift, South-Eastern Tuva, Russia
National Research Tomsk Polytechnic University, 30 Lenina Avenue, Tomsk 634050, Russia
2 Tomsk Department of the Trofimuk Institute of Petroleum-Gas Geology and Geophysics of Siberian Branch of the Russian Academy of Sciences, Tomsk 634055, Russia
3 Research Institute of Medical and Social Problems and Management of the Republic of Tuva, 48 Lenina Avenue, Kyzyl 667000, Russia
* Corresponding author: email@example.com
The spa resort of the Ush-Beldir is located in the south-eastern part of the Tuva region, Russia in the zone of influence of the Baikal rift. The Ush-Beldir territory has about 10 thermal springs and 4 exploration wells used for treatment and prevention of diseases. Hydrological and hydrochemical features of the thermal groundwaters are considered. The studied waters are thermal (T=50–83°C), alkaline (pH=9.3–10), low mineralized (TDS<370 mg/L) Na–НСО3 waters with a high content of SiO2 (up to 125 mg/L) and F (up to 14 mg/L). The correlation of F- with SiO2, НСО3–, Cl-, Na+ as well as the calculation of saturation indices of minerals, allows one plausible solute source for these thermal waters, viz. the dissolution of rock-forming aluminosilicates, most likely plagioclase, gabbro and/or amphiboles in shales.
© The Authors, published by EDP Sciences, 2019
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