Инд. авторы: | Kruk N.N., Golozubov V.V., Kasatkin S.A., Rudnev S.N., Vrzhosek A.A., Kuibida M.L., Vovna G.M. |
Заглавие: | Granitoids of the Gamov intrusion (southern Primorye), its peculiarities and indicative and geodynamic role |
Библ. ссылка: | Kruk N.N., Golozubov V.V., Kasatkin S.A., Rudnev S.N., Vrzhosek A.A., Kuibida M.L., Vovna G.M. Granitoids of the Gamov intrusion (southern Primorye), its peculiarities and indicative and geodynamic role // Russian Geology and Geophysics. - 2015. - Vol.56. - Iss. 12. - P.1685-1700. - ISSN 1068-7971. - EISSN 1878-030X. |
Внешние системы: | DOI: 10.1016/j.rgg.2015.11.003; РИНЦ: 27139150; SCOPUS: 2-s2.0-84961659395; WoS: 000365819600003; |
Реферат: | eng: We studied the geologic position, mineralogy, petrography, chemical composition, and age of granitoids of the Gamov batholith located in the Heilongjiang-Grodekovo terrane, southern Primorye (Russia). The studies have revealed four intrusive rock phases, from gabbro to leucogranites, in the massif. U-Pb zircon dating of tonalites of phase II and leucogranites of phase IV (254 +/- 4 and 259 +/- 2 Ma, respectively) shows that the intrusion of granitoids took place in the Late Permian without a significant gap in time. Structural investigations gave evidence for the intrusion in the E-W compression setting. Geochemical studies have revealed granitoids of strongly different compositional types in the intrusive massif: gabbroids, quartz diorites and tonalites with characteristics of low-alumina TTG, calc-alkalic granodiorites and I-type granites, and moderately alkaline leucogranites. The obtained data, together with the results of previous research into the Permo-Triassic granitoids of southern Primorye, reject their formation as a result of the evolution of the Solonker oceanic structures and suggest a more intricate tectonic scenario, which calls for additional study. (C) 2015, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
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Ключевые слова: | PETROGENESIS; ROCKS; FAR-EAST; SIKHOTE-ALIN; CLASSIFICATION; southern Primorye; geochronology; geochemistry; granitoids; A-TYPE GRANITES; DISCRIMINATION; |
Издано: | 2015 |
Физ. характеристика: | с.1685-1700 |