Deep Crustal Structure in the Southern Part of the Tatar Trough and the Distribution of Gas Geochemical Anomalies

Abstract

Deep structural features of the structures in the southern part of the Tatar trough were determined based on structural, density and petromagnetic modeling. It was revealed that the morphostructure has a riftogenic nature. The distribution of anomalous methane concentrations in water and the upper part of the sedimentary cover above these objects was studied. It is shown that the sialic crust in the area adjacent to the rift structures has undergone characteristic changes. Possible ways of delivering thermogenic methane to the upper part of the sedimentary cover and the water column were determined.