Maslennikova A.V., Udachin V.N., DeryaginV.V.
STABLE CARBON AND OXYGEN ISOTOPES OF LAKE SIRITKUL (SOUTH ULAL) SEDIMENTS AS INDICATORS OF HOLOCENE CONDITIONS ^{[№ 6 ' 2012]}
Lake Siritkul sedimentation conditions reconstruction of 11000-5000 14С yr. B.P. interval were carried out. There were revealed coincidence of pollen-zones and climatic stages determined on the basis of isotopic analyses. The assumption of connection between atmospheric precipitation, evaporation and isotopic content of carbon and oxygen was confirmed with the help of pollen analysis.

Udachin V.N., Aminov P.G., Lonschakova G.F., Deryagin V.V.
DISTRIBUTION OF PHYSICAL AND CHEMICAL PARAMETERS IN QUARRY LAKES OF SULPHIDE ORE FIELDS BLYAVINSKOYE AND YAMAN-KOSINSKOYE (THE SOTH URALS) ^{[№ 5 ' 2009]}
The water composition and physical and chemical parameters in two quarry lakes of Blyavinskoye and Yaman-Kosinskoye, Orenburg Oblast were studied. The both objects are geotechnical systems that were created after discontinuance of pumping when development of the field was completed. Within water columns of 42 m in deep with pH 2.9-3.2 the heavy metals and suspension stratification was significantly evident which was due to the position of oxygen boundary. Fundamentally different forms of the element location in dissolved and suspended forms in aerobic and anaerobe zones were found.