Formation of the chemical composition of brackish and brine groundwater in the Tuva depression and surrounding areas

Abstract

Groundwater with high salinity is widespread in different climatic and geologic environments of the world. The formation of its chemical composition, however, is still debatable. The chemical composition of groundwater has been studied in 19 springs of the Tuva depression. In this area, hydrocarbonate, sulfate, and chloride waters with different cation compositions discharge. Their TDS value varies mainly from 1 to 6 g/L, reaching 315 g/L at only one locality. The chemical composition of the studied waters is reflective of the geostructural, hydrogeologic, landscape, and geochemical conditions. The main processes determining the chemical composition of the waters are their interaction with aluminosilicate minerals, dissolution of gypsum and halite, evaporation, and oxidation of sulfide minerals.

Original language	English
Pages (from-to)	135-143
Number of pages	9
Journal	Russian Geology and Geophysics
Volume	59
Issue number	2
DOIs	https://doi.org/10.1016/j.rgg.2018.01.011
Publication status	Published - Feb 2018

Keywords

brackish waters
chemical composition
continental salinization
oxidation
Tuva depression
water-rock system

ASJC Scopus subject areas

Geophysics
Geology

Access to Document

10.1016/j.rgg.2018.01.011

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Formation of the chemical composition of brackish and brine groundwater in the Tuva depression and surrounding areas. / Guseva, N. V.; Kopylova, Yu G.; Oidup, Ch K.; Arakchaa, K. D.; Rychkova, K. M.; Khvashchevskaya, A. A.; Ayunova, O. D.

In: Russian Geology and Geophysics, Vol. 59, No. 2, 02.2018, p. 135-143.

Research output: Contribution to journal › Article › peer-review

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abstract = "Groundwater with high salinity is widespread in different climatic and geologic environments of the world. The formation of its chemical composition, however, is still debatable. The chemical composition of groundwater has been studied in 19 springs of the Tuva depression. In this area, hydrocarbonate, sulfate, and chloride waters with different cation compositions discharge. Their TDS value varies mainly from 1 to 6 g/L, reaching 315 g/L at only one locality. The chemical composition of the studied waters is reflective of the geostructural, hydrogeologic, landscape, and geochemical conditions. The main processes determining the chemical composition of the waters are their interaction with aluminosilicate minerals, dissolution of gypsum and halite, evaporation, and oxidation of sulfide minerals.",

keywords = "brackish waters, chemical composition, continental salinization, oxidation, Tuva depression, water-rock system",

author = "Guseva, {N. V.} and Kopylova, {Yu G.} and Oidup, {Ch K.} and Arakchaa, {K. D.} and Rychkova, {K. M.} and Khvashchevskaya, {A. A.} and Ayunova, {O. D.}",

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AU - Guseva, N. V.

AU - Kopylova, Yu G.

AU - Oidup, Ch K.

AU - Arakchaa, K. D.

AU - Rychkova, K. M.

AU - Khvashchevskaya, A. A.

AU - Ayunova, O. D.

PY - 2018/2

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AB - Groundwater with high salinity is widespread in different climatic and geologic environments of the world. The formation of its chemical composition, however, is still debatable. The chemical composition of groundwater has been studied in 19 springs of the Tuva depression. In this area, hydrocarbonate, sulfate, and chloride waters with different cation compositions discharge. Their TDS value varies mainly from 1 to 6 g/L, reaching 315 g/L at only one locality. The chemical composition of the studied waters is reflective of the geostructural, hydrogeologic, landscape, and geochemical conditions. The main processes determining the chemical composition of the waters are their interaction with aluminosilicate minerals, dissolution of gypsum and halite, evaporation, and oxidation of sulfide minerals.

KW - brackish waters

KW - chemical composition

KW - continental salinization

KW - oxidation

KW - Tuva depression

KW - water-rock system

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