Abstract
The results of reinterpretation of the geophysical data obtained during the study of the central sector of the Kuril Island Arc (2005–2010) are reported. The new boundaries of the shallow bedding of the basement and its block uplifts of varied composition are defined within the previously discovered zone of tectonic stretching and destruction of the Vityaz submarine ridge and interarc trough. Interblock depressions filled with sedimentary and volcanogenic-sedimentary rocks are distinguished. Areas represented by volcanoplutonic complexes including basic and sialic series (up to granite) are distinguished within the unbroken basement of the Vityaz Ridge. Intrusions and volcanic edifices composed of basic rocks are registered on the whole area studied. The relationship between the formation of the destruction zone and the geodynamic processes in the mantle is illustrated by the map of the Moho relief and structural-density model of the Earth’s crust.
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Original Russian Text © Z.N. Proshkina, R.G. Kulinich, M.G. Valitov, 2017, published in Tikhookeanskaya Geologiya, 2017, Vol. 36, No. 6, pp. 58–69.
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Proshkina, Z.N., Kulinich, R.G. & Valitov, M.G. Structure, Matter Composition, and Deep Structure of the Oceanic Slope of the Central Kuril Islands: New Evidence. Russ. J. of Pac. Geol. 11, 436–446 (2017). https://doi.org/10.1134/S1819714017060045
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DOI: https://doi.org/10.1134/S1819714017060045