NEW RESULTS OF FR SOUNDING OF LOCAL DEGASSING AREAS PROSPECTING IN SOME CONTINENTAL MARGINS STRUCTURES

Abstract

The characteristics of large seabed gas seepage areas (for scanning points) in the transition zone of the shelf-continental slope (Polar region, Barents, Mediterranean, and Black Seas) have been determined, and assumptions have been made about the possible deep nature of their formation. The formation of oil and gas deposits, accumulations of gas hydrates and sub-hydrate gas, as well as the presence of areas of mud volcanic activity and centers of gas emission, can be considered as the result of long-term active influence of localized flows of hydrocarbon fluids (mantle degassing products) on the rocks of deep and near-surface structures of various ages and genesis. These results interpretation of the ERS have shown the possibility of using seeps as an additional verification of hydrocarbon deposits and their abiogenic formation mechanism and yield new independent useful information at any stage of seeps, and mud volcanoes prospecting They should be considered the first approximation of quantitative calculations of some deep sources of Earth degassing processes