Petrology and age of granitoids of the Aturkol Massif, Gorny Altai: Contribution in the problem of formation of intraplate granitoids
- Авторы: Rudnev S.1, Shokalsky S.2, Vasyukova E.1,3, Kotov A.4, Sal’nikova E.4, Travin A.1,3,5, Kovach V.4, Kruk E.1, Kruk N.1,3, Gavryushkina O.1,3
-
Учреждения:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch
- Karpinskii All-Russia Research Geological Institute
- Novosibirsk National Research State University
- Institute of Precambrian Geology and Geochronology
- Tomsk State University
- Выпуск: Том 25, № 3 (2017)
- Страницы: 318-337
- Раздел: Article
- URL: https://journals.rcsi.science/0869-5911/article/view/177524
- DOI: https://doi.org/10.1134/S086959111703002X
- ID: 177524
Цитировать
Аннотация
Geological, mineralogical, petrographic, geochemical, and geochronological data are reported for granitoids of the Aturkol Massif (Gorny Altai). It is shown that it was formed in within-plate setting in the Early Triassic, nearly simultaneously with flood basalts of the Kuznetsk Basin and alkalic basite and lampropyre dike swarms in the western Altai-Sayan Fold Region. At the same time, the mineralogical-petrographic, geochemical, and isotope characteristics of the considered granitoids are close to those of I-type granites. Intraplate signatures (elevated HFSE and REE) are recognized only in the least silicic rocks (granosyenites). Obtained data suggest mantle–crustal nature of the granitoids. They were formed by mixing of lamprophyre magmas with high pressure (>10 kbar) crustal melts derived from a mixed source consisting mainly of N-MORB-type metabasites with insignificant admixture of high-Ti basalts and metasedimentary rocks. The contribution of mantle component in the granitoids was insignificant (<20%). Proposed petrogenetic mechanism can provide the formation of large volumes of granitoid magmas with “crustal” geochemical and isotope signatures in an intraplate setting.
Об авторах
S. Rudnev
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090
S. Shokalsky
Karpinskii All-Russia Research Geological Institute
Email: kruk@igm.nsc.ru
Россия, Srednii pr. 74, St. Petersburg, 199106
E. Vasyukova
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090; ul. Pirogova 1, Novosibirsk, 630090
A. Kotov
Institute of Precambrian Geology and Geochronology
Email: kruk@igm.nsc.ru
Россия, nab. Makarova 2, St. Petersburg, 199034
E. Sal’nikova
Institute of Precambrian Geology and Geochronology
Email: kruk@igm.nsc.ru
Россия, nab. Makarova 2, St. Petersburg, 199034
A. Travin
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University; Tomsk State University
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090; ul. Pirogova 1, Novosibirsk, 630090; pr. Lenina 36, Tomsk, 634050
V. Kovach
Institute of Precambrian Geology and Geochronology
Email: kruk@igm.nsc.ru
Россия, nab. Makarova 2, St. Petersburg, 199034
E. Kruk
Sobolev Institute of Geology and Mineralogy, Siberian Branch
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090
N. Kruk
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University
Автор, ответственный за переписку.
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090; ul. Pirogova 1, Novosibirsk, 630090
O. Gavryushkina
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University
Email: kruk@igm.nsc.ru
Россия, pr. akademika Koptyuga 3, Novosibirsk, 630090; ul. Pirogova 1, Novosibirsk, 630090