Structure, matter composition and deep structure of the oceanic slope of the Central Kuril Islands: new evidence
The results of reinterpretation of geophysical data obtained while studying the central sector of the Kuril Islands Arc (2005-2010) are presented. Within the earlier discovered zone of the tectonic stretching and destruction of the submarine Vityaz Ridge and interarc depression new boundaries of the shallow bedding of the basement and its block uplifts of different composition are defined. Also were distinguished interblock depressions filled with sedimentary and volcano-sedimentary deposits. Within the unbroken basement of the Vityaz Ridge, the areas represented by volcanic-plutonic complexes including the basite and sialic series, up to the granites, are determined. Intrusions and volcanic edificies of the basite series are determined within the whole study area. The connection between the formation of the destruction zone and the geodynamic processes in the mantle is illustrated by the map of the Moho relief and density model of the Earth's crust.