Hydrothermal Formations on the Pervenets Rise, Japan Sea

—The Sea of Japan is a tectonically active region with rift-related destruction of the Earth’s crust and numerous volcanic ediﬁces on the seaﬂoor. Since the 1970s, numerous zones with ferromanganese crusts (FMCs) and phosphorite and barite ore occurrences have been discovered during the repeated expeditions of the Paciﬁc Oceanological Institute, Vladivostok. Analysis of the distribution of these ore occurrences showed that all of them are conﬁned to tectonically active zones of the seaﬂoor: submarine volcanoes, tectonic scarps, or fault zones. In some zones, phosphorites occur together with FMCs, and in one zone, together with FMCs and barites. Ferromanganese hydroxides, phosphorites, or barites are found in the pores of basalts composing submarine volcanic ediﬁces in the Sea of Japan. These data indicate that the ore matter in all zones is supplied with postvolcanic gas-hydrothermal fluids or hydrothermal solutions circulating along deep faults during the destruction of the continental crust in the southern and eastern parts of the sea. Thus, ferromanganese, phosphate, and barite ore occurrences in the Sea of Japan are related to low-temperature hydrothermal-sedimentary processes.

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Hydrothermal Formations on the Pervenets Rise, Japan Sea

Cited by 3 publications

References 4 publications

Formation of hydrothermal ferromanganese oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles?

Formation of hydrothermal ferromanganese oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles?

Ferromanganese Crusts of the Peter the Great Seamount and the Vasilkovsky Ridge (Sea of Japan)

Hydrothermal Ore Genesis in the Sea of Japan

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