Influence of Kuchiger hydrotherm on the content and forms of sodium (Barguzin basin)

The article studies the content of various forms of sodium in soils near Kuchiger mineral spring (north of the Baikal rift zone). It was found that the average sodium content in thermal springs, rocks and soils is above the level of clarkes. High sodium indices in the soils of the Barguzin Basin are associated with a combination of endogenous (hydrothermal discharge and fluid yields) and exogenous (extreme continental climate, alkaline granites as parent rock material) factors. We have established the features of spatial and profile distribution of sodium in soils. This element can be used in soil ecological monitoring, necessary for the soils of rift zones with abnormally high concentrations of substances incoming from thermal waters.