Gas-geochemical features of sediments in the East-Siberian Sea
Geochemical survey of bottom sediments was conducted across the East-Siberian Sea in 45-th Cruise, 2008 on RV Academic M.A.Lavrentev. The main features of distribution of gas-chemical and granulometric parameters, ultimate composition and the organic carbon content in the upper layer of sediments and also correlation of these parameters were shown in details. On the results of gas-geochemical observations, natural gas discharge zone was determined that was under control of neo-tectonic fault. Hydrocarbon gases have probably mixed genesis. The content of some chemical elements in the studied sediments exceeds their average content in sedimentary rocks of the continents.