Seismoacoustic Profiling Research Articles

New data on structure and history of development of the shelf and continental slope of the Sea of Japan in Southern Primor'ye

On the basis of data from continuous seismo-acoustic profiling of the sector from Cape Gamova to Cape Olarovskogo, and also published data based on the dredging of the submarine canyons of this and a number of other regions, we conclude that the continental slope of the Sea of Japan in Primor'ye was formed on the Miocene-Pliocene boundary as a result of stepwise downwarpings of the consolidated basement, which consisted of Paleozoic and Mesozoic rocks. This led to a flexure-like bending of the overlying Miocene marine sediments. On the inner side, the shelf is also limited by a system of faults, which became active at the beginning of the neotectonic stage. The cover of marine shelf deposits proper consists of Pliocene-Quaternary formations. —Author.