Abstract
This article presents the results of the study of water chemical composition and formation processes in the eastern slope of the Polar Ural where permafrost is widely spread. To date, this region has not been studied in detail. However, it is very important to have information on the natural waters in this region because they play a significant role in all geochemical processes, including climate formation. For this study, 107 water samples were collected from lakes, rivers and active layer waters. The studied waters are ultrafresh; total dissolved solids vary from 14 to 438 mg/L. pH ranges from 3.5 to 9.0. The chemical type of the studied waters is mostly HCO3–Ca–Mg. The geochemical environment of the studied waters contributes to the accumulation of such trace elements as Fe, Mn, Al, Ni, Au, Co, Li, Sc, Ti, Cr, Sr, Nb, Mo, Cs, La, Eu, Lu, Hg, and Se. The chemical composition peculiarities of active layer waters, rivers, lakes and waters of stone pits and exploration trenches and the description of their chemical composition formation processes are given in the present study. The water–rock interaction is a dominant process of water chemical composition formation in the studied region. The obtained results have both potential theoretical and practical applications.
Highlights
The Polar Urals is a region of northern Russia on which great hopes are pinned for the development and renewal of the mineral resource base of the Russian Federation [1,2,3]
The present investigation shows that the studied waters are ultrafresh with Total dissolved solids (TDS) from 14 to
The studied waters mostly belong to HCO3 –Ca–Mg or HCO3 –Mg–Ca chemical water types, rarely do waters have
Summary
The Polar Urals is a region of northern Russia on which great hopes are pinned for the development and renewal of the mineral resource base of the Russian Federation [1,2,3]. This remote region has not been studied well, with respect to hydrogeochemical aspects. The natural waters of this region are in close contact with the atmosphere; they undergo seasonal phase changes and they are in solid phase most of the year These and other factors determine the peculiarities of water composition formation processes in the permafrost region. The problems of water geochemistry in regions with a cold climate and permafrost have been well studied
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