Early paleozoic granitoids in the Lesser Khingan terrane, Central Asian Foldbelt: Age, geochemistry, and geodynamic interpretations
Early paleozoic granitoids in the Lesser Khingan terrane, Central Asian Foldbelt: Age, geochemistry, and geodynamic interpretations
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DOI：
10.1134/s0869591111060051
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发表时间：
2011-11
期刊：
影响因子：
1.5
通讯作者：
A. A. Sorokin-A.;A. Kotov;E. Sal’nikova;N. Kudryashov;S. D. Velikoslavinskii;S. Yakovleva;A. Fedoseenko-A.-Fedose
中科院分区：
文献类型：
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作者：
A. A. Sorokin-A.;A. Kotov;E. Sal’nikova;N. Kudryashov;S. D. Velikoslavinskii;S. Yakovleva;A. Fedoseenko-A.-Fedose
Sutara（480 ± 4 Ma）、Kabalinskii（471 ± 10 Ma）和Durilovskii（461 ± 5 Ma）火山岩的U-Pb锆石年龄可靠地证实了早元古代造山事件，该事件发生在大约500 Ma的麻粒岩变质作用之后（Wilde等人，2003年，在小兴安岭（佳木斯）成立。主要变质事件发生后不久侵位的岩石是苏塔拉地块的花岗岩和卡巴林斯基地块的浅色花岗岩，其地球化学性质接近碰撞花岗岩。石英闪长岩和亚碱性花岗岩的Durilovskii地块，其地球化学表明，它们的起源在碰撞后的环境与富集地幔源的参与，侵位后变质事件和上述的地幔岩。
The U-Pb zircon dates obtained for the Sutara (480 ± 4 Ma), Kabalinskii (471 ± 10 Ma), and Durilovskii (461 ± 5 Ma) massifs reliably confirm an Early Proterozoic orogenic event, which took place after granulite metamorphism at approximately 500 Ma (Wilde et al., 2003) in the Lesser Khingan (Jiamusi) terrane. The rocks emplaced most shortly after the main metamorphic event are the granites of the Sutara Massif and leucogranites of the Kabalinskii Massif, whose geochemistry is close to that of collision granites. The quartz diorites and subalkaline granites of the Durilovskii Massif, whose geochemistry suggests their origin in a postcollision environment with the participation of an enriched mantle source, were emplaced longer after metamorphic event and after the aforementioned massifs.