Description: Brief Characteristics and Classification of Barriers and Barriers Zones in the Ocean.- Mechanical (Hydrodynamic) Barriers.- Physicochemical Barriers.- Salinity Barriers.- Temperature, Density and Dynamic Barriers.- Geochemical Barriers That Exist Independently of Their Position in Space (Autonomic Barriers).- Geochemical Barrier Zones.- Geochemical Landscapes.- Barriers as transformation areas of sedimentary material.- River-Sea.- Coast-Sea.- Hydrofronts.- Front of Coastal Upwelling.- Ice-Water Boundary.- Hydrothermal Fluid-Seawater Barrier Zone.- Ocean-Atmosphere.- Photic Layer.- The Thermocline and Pycnocline as GBZs.- Oxygen Minimum Layer.- Redox (Eh) Barrier in Seawater.- Salinity Barrier.- Calcium Carbonate Compensation Depth (CCD).- The Water-Bottom Interface.- Redox (Eh) Barrier in Sediments.- The Upper Active Sediment Layer.- Lithogeochemical Areas, Regions and Provinces.- Lithogeochemical Barriers as Leading Factors in Ore Formation.- General.- Mechanical Barriers and Placer Formation.- River-Sea GBZs and Formation of Oil Hydrocarbons.- River-Sea GBZs and Formation of Pseudo-oolitic and Oolitic Hydrogoethite-Chamosite Ferruginous Ores and Glauconite.- Front of Coastal Upwelling and Accumulation of Phosphorites.- Hydrofronts and Ore Formation in Pelagic Areas of the Ocean.- The Halocline (Pycnocline) and Accumulation of Shallow-water Ferromanganese Crusts and Nodules.- The Oxygen Minimum Layer and Development of Cobalt-Manganese Crusts.- Geochemical Barrier Zones and Processes of Accumulation of Carbonate-Oxic Manganese Ores.- Ore Formation at the Redox (Eh) Barrier in Sediments.- Geochemical Barrier Zones and Formation of Siderite.- Hydrothermal Process and Ore Formation.- Calcium Carbonate Compensation Depth and Formation of FMNs.- Geochemical Barrier Zones and Formation of Sapropel.- Predicting and Prospecting for Ores of Marine Genesis.- Some Geological Aspects of Variations in Marine.- Second-Order Boundaries.- First-Order Boundaries.- Internal Boundaries.

Please Wait