Variations in the Pb isotope composition in polyformational magmatic rocks of the Ketkap–Yuna igneous province of the Aldan Shield: Evidence for mantle–crust interaction
- Autores: Polin V.1, Dril S.2, Khanchuk A.1, Velivetskaya T.1, Vladimirova T.2, Il’ina N.2
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Afiliações:
- Far East Geological Institute, Far East Branch
- Vinogradov Institute of Geochemistry, Siberian Branch
- Edição: Volume 468, Nº 2 (2016)
- Páginas: 611-615
- Seção: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/188525
- DOI: https://doi.org/10.1134/S1028334X16060143
- ID: 188525
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Resumo
The Pb isotope composition of polyformational Mesozoic igneous rocks of the Ketkap–Yuna igneous province (KYIP) and lower crustal metamorphic rocks of the Batomga granite–greenstone area (the complex of the KYIP basement) of the Aldan Shield was studied for the first time. Based on the data obtained, several types of material sources participating in petrogenetic processes were distinguished. The mantle source identified as PREMA is registered in most of the igneous formations and predominates in mafic alkaline rocks. According to the isotope characteristics, the upper crustal source corresponds to a source of the “Orogen” type by the model of “plumbotectonics” or to the average composition of the continental crust by the Stacey–Kramers model. The lower crust is the third material source; however, the type of lower crustal protolith involved in the igneous process is still not defined, which makes difficult to estimate its role in the petrogenetic processes.
Sobre autores
V. Polin
Far East Geological Institute, Far East Branch
Autor responsável pela correspondência
Email: vfpolin@mail.ru
Rússia, prosp. Stoletiya Vladivostoka 159, Vladivostok, 690022
S. Dril
Vinogradov Institute of Geochemistry, Siberian Branch
Email: vfpolin@mail.ru
Rússia, Favorskogo ul. 1a, Irkutsk, 650033
A. Khanchuk
Far East Geological Institute, Far East Branch
Email: vfpolin@mail.ru
Rússia, prosp. Stoletiya Vladivostoka 159, Vladivostok, 690022
T. Velivetskaya
Far East Geological Institute, Far East Branch
Email: vfpolin@mail.ru
Rússia, prosp. Stoletiya Vladivostoka 159, Vladivostok, 690022
T. Vladimirova
Vinogradov Institute of Geochemistry, Siberian Branch
Email: vfpolin@mail.ru
Rússia, Favorskogo ul. 1a, Irkutsk, 650033
N. Il’ina
Vinogradov Institute of Geochemistry, Siberian Branch
Email: vfpolin@mail.ru
Rússia, Favorskogo ul. 1a, Irkutsk, 650033