Geology, geography and global energy

Scientific and Technical Journal

GEOLOGICAL FEATURES OF THE VOLCANIC COMPLEXES OF THE LOWER-TAIGA ORE NODE (NORTHERN PRIMORIE)

2019. №2, pp. 18-25

Ivin Vitaliy V. - Ph. D. in Geological Science, Senior Researcher, Far East Geological Institute Far East Branch Russian Academy of Sciences, ivin_vv@mail.ru

Medvedev Evgenii I. - Junior Researcher, Far East Geological Institute Far East Branch Russian Academy of Sciences, Cage21@mail.ru

Fataynov Igor I. - Senior Researcher, Far East Geological Institute Far East Branch Russian Academy of Sciences, 1937fat@list.ru

Nizhne-Taiga area is part of the East-Sikhote-Alin volcanic-plutonic belt (ESAVPB) located in the transition zone of the continent ocean and has a very folded geological structure. The study of the geological and geochemical composition, structure and patterns of placement of volcanogenic-sedimentary rocks of the Lower-Taiga area (LTA) will significantly complement the data on the geological and geochemical features of the Mesozoiso-Cenozoic stage of the formation of the ESAVPB. The novelty of the work lies in the fact that for the LTA geochemical data on the chemical composition of the petrogenic, rare and trace elements of uneven-age volcanic complexes: Primorsky, Samarginsky, Bogopol and Kizinsky, were first obtained. As a result of the conducted studies, it was shown that the complexes under study are composed of high-pot difference of rocks and differ in the content of rare and dispersed elements. The seaside complex in comparison with other LTA volcanic complexes is characterized by elevated concentrations of tungsten, zinc, lead, thorium, lanthanum cerium, low concentrations of niobium, strontium, zirconium and titanium. The Samargin complex is characterized by a distinct minimum of the contents of titanium, strontium and the maximum - neodymium. The Bogopolsky and Kizinsky complexes in the distribution of rare and dispersed elements have a similar trend appearance with other volcanic complexes of the node, differing only in the level of their concentrations.

Key words: комплекс, концентрация, порода, complex, concentration, volcanic rock

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