Age and Boundaries of the Olekma Magmatic Belt of the Selenga-Stanovoi Superterrane (Central Asian Mobile Belt)

被引：4
|
作者：
Kovach, V. P. [1 ]
Kotov, A. B. [1 ]
Larin, A. M. [1 ]
Sal'nikova, E. B. [1 ,2 ]
Velikoslavinskii, S. D. [1 ]
Yakovleva, S. Z. [1 ]
Plotkina, Yu. V. [1 ]
机构：
[1] Russian Acad Sci, Inst Precambrian Geol & Geochronol, St Petersburg 199034, Russia
[2] St Petersburg State Univ, St Petersburg 199034, Russia
来源：
DOKLADY EARTH SCIENCES | 2018年 / 483卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
GEOCHRONOLOGY; GRANITOIDS; PB;
D O I：
10.1134/S1028334X1811003X
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Olekma magmatic belt of the Selenga-Stanovoi Superterrane within the Central Asian mobile belt is traced for a distance of more than 700 km. As a result of U-Pb geochronological studies, it was established that granitoids of the Olekma Complex have the Paleozoic age (355 +/- 2 and 358 +/- 2 Ma) in the eastern and central part of the belt, whereas consolidation of granitoids with a similar composition in the western segment occurred in the Early Mesozoic (237 +/- 1 Ma). The formation of Mesozoic granitoids of the Olekma Complex occurred under the conditions of lithospheric extension, whereas Late Paleozoic granitoids were most likely formed during the collision of the Selenga-Stanovoi Superterrane and structures of the Baikal mountain area.
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收藏
页码：1375 / 1379
页数：5
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