THE EVOLUTION OF ALKALINE, SALINE GROUND- AND SURFACE WATERS IN THE SOUTHERN SIBERIAN STEPPES

Show simple item record

dc.contributor.author Banks D.
dc.contributor.author Parnachev V.P.
dc.contributor.author Frengstad B.
dc.contributor.author Holden W.
dc.contributor.author Karnachuk O.V.
dc.contributor.author Vedernikov A.A.
dc.date.accessioned 2022-03-24T08:31:06Z
dc.date.available 2022-03-24T08:31:06Z
dc.date.issued 2004
dc.identifier https://www.elibrary.ru/item.asp?id=13458462
dc.identifier.citation Applied Geochemistry, 2004, 19, 12, 1905-1926
dc.identifier.issn 0883-2927
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/36591
dc.description.abstract Groundwaters, river and lake waters have been sampled from the semi-arid Siberian Republic of Khakassia. Despite the relatively sparse data set, from a diversity of hydrological environments, clear salinity-related trends emerge that indicate the main hydrochemical evolutionary processes active in the region. Furthermore, the major ion chemistry of the evolution of groundwater baseflow, via rivers, to terminal saline lake water, can be adequately and simply modelled (using PHREEQCI) by invoking: (i) degassing of CO2 from groundwater as it emerges as baseflow in rivers (rise in pH); (ii) progressive evapoconcentration of waters (parallel accumulation of Cl−, Na+, SO42−, and increase in pH due to common ion effect); and (iii) precipitation of calcite (depletion of Ca from waters, reduced rate of accumulation of alkalinity). Dolomite precipitation is ineffective at constraining Mg accumulation, due to kinetic factors. Silica saturation appears to control dissolved Si in low salinity waters and groundwaters, while sepiolite saturation and precipitation depletes Si from the more saline surface waters. Gypsum and sodium sulphate saturation are only approached in the most saline environments. Halite remains unsaturated in all waters. Sulphate reduction processes are important in the lower part of lakes.
dc.title THE EVOLUTION OF ALKALINE, SALINE GROUND- AND SURFACE WATERS IN THE SOUTHERN SIBERIAN STEPPES
dc.type Статья


Files in this item

This item appears in the following Collection(s)

  • ELibrary
    Метаданные публикаций с сайта https://www.elibrary.ru

Show simple item record