Lake Balkash

Figure 11 Changes in water ehemistry in Lake Balkash as a funetion of distanee from fluvial input of the Hi River. Precipitation of calcite causes Ca/Mg to decrease as waters become more evaporatively concentrated (after Versilin...

Verzihn N. N. and Utsal K. R. (1991) Mineral composition of sediments (Lake Balkash). In Lake History of the Sevan, Issyk-kul, Balkash, Zaisan, and Aral Sea Basins (eds. D. V. Sevastyanov et al.). NAUKA (in Russian), Moscow. 

Continental Waters. Some data have recently been obtained for Central Kazakstan (Table 25) on waters in cracks and sediments of Devonian volcanics and sediments and water from the Sea of Azov and Lake Balkash (Andreyev et al, 1967). In this difficult analitical problem, the lead was collected either (1) on activated charcoal saturated with chloroform saturated with dithizone or (2) as a coprecipitate with a tannin-gelatin complex. The transient water was found to be highly variable in lead isotope ratios, both radiogenic and non-radiogenic and the lake waters had about the same ratios as oceanic manganese nodules or were less radiogenic. 

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