New geochemistry data on sediments of the South Tatar sediment basin (basing on the 54th cruise of RV “Akademik Oparin”).

Abstract

Geochemical studies of sediments help to allocate the area of the deep fluid distribution, the placement of ore bodies and placers of useful components and many other aspects. The Tatar Strait is a natural laboratory, where we can study different aspects of sedimentogenesis. The article studies the geochemical features of bottom sediments in the South-Tatar sediment basin obtained during 54th Cruise of RV “Akademik Oparin”. They have increased contents of silica (75 wt.%), magnesium oxide (5.1 wt.%). High concentrations of vanadium (up to 300 g/t) and sulfur (up to 0.7 wt.%) are located in the Terneysky depression (epibathyal zone). Such sulfur contents may be associated with active sulfide mineralization and/or the presence of hydrocarbons. Non-ferrous metals, including heavy metals (Pb), are also concentrated in the Terneysky depression. The obtained results can be used to analyze the conditions of modern sediment strata of the South Tatar basin, as well as to forecast alluvial shelf and sediment deposits.