Structural style and metamorphic conditions of the Jinshajiang metamorphic belt: Nature of the Paleo-Jinshajiang orogenic belt in the eastern Tibetan Plateau
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- 作者：Wentao Cao1 ; Dan-Ping Yan ; yandp@cugb.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Liang Qiu ; Yixi Zhang ; Jingwei Qiu
- 关键词：Jinshajiang suture ; Barrovian metamorphism ; Thermobarometry ; Paleotethys tectonics ; Tibetan Plateau
- 刊名：Journal of Asian Earth Sciences
- 出版年：2015
- 出版时间：1 December 2015
- 年：2015
- 卷：113
- 期：part_P2
- 页码：748-765
- 全文大小：8287 K
文摘
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Three stages of deformation and metamorphism have been identified and correlated.
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Peak P–T for kyanite and sillimanite zones are 583 °C, 6.5 kbar and 635 °C, 5.0 kbar.
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Igneous cores of the metamorphic zircons were dated to be 240 Ma by LA-ICPMS.
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40Ar/39Ar dating of muscovites yields a cooling age of 224 Ma.
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A model for the Permian to Triassic evolution of the paleo-Jinshajiang oceanic plate is indicated.