U–Pb dating and composition of inclusions in zircon from ophiolitic gabbro of the Klyuchevsk massif (Middle Urals): Results and geological interpretation
- Авторы: Smirnov V.1, Ivanov K.1, Koroteev V.1, Erokhin Y.1, Khiller V.1
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Учреждения:
- Zavaritskii Institute of Geology and Geochemistry, Ural Branch
- Выпуск: Том 468, № 2 (2016)
- Страницы: 574-579
- Раздел: Geology
- URL: https://journals.rcsi.science/1028-334X/article/view/188483
- DOI: https://doi.org/10.1134/S1028334X16060155
- ID: 188483
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Аннотация
The U–Pb (SHRIMP) dating of zircon from the layered complex of ophiolitic gabbro in the Klyuchevsk massif yielded an age of 456 ± 6 Ma corresponding within the limits of error to zircon dates obtained for other petrographic varieties from this massif. The investigation of the composition of silicate inclusions in dated zircon grains revealed that they are represented by typical metamorphic minerals: albite, zoisite, and secondary amphiboles. The data indicate that zircon was crystallized during metamorphic transformations of gabbroids and its U–Pb age (Late Ordovician–Silurian) is characteristic of all rocks in the ophiolite association of the Klyuchevsk massif indicating the age of metamorphism, not their formation time.
Об авторах
V. Smirnov
Zavaritskii Institute of Geology and Geochemistry, Ural Branch
Автор, ответственный за переписку.
Email: smirnov@igg.uran.ru
Россия, Pochtovy per. 7, Yekaterinburg, 620151
K. Ivanov
Zavaritskii Institute of Geology and Geochemistry, Ural Branch
Email: smirnov@igg.uran.ru
Россия, Pochtovy per. 7, Yekaterinburg, 620151
V. Koroteev
Zavaritskii Institute of Geology and Geochemistry, Ural Branch
Email: smirnov@igg.uran.ru
Россия, Pochtovy per. 7, Yekaterinburg, 620151
Yu. Erokhin
Zavaritskii Institute of Geology and Geochemistry, Ural Branch
Email: smirnov@igg.uran.ru
Россия, Pochtovy per. 7, Yekaterinburg, 620151
V. Khiller
Zavaritskii Institute of Geology and Geochemistry, Ural Branch
Email: smirnov@igg.uran.ru
Россия, Pochtovy per. 7, Yekaterinburg, 620151