Double-layer structure of the crust beneath the Zhongdian arc, SW China: U-Pb geochronology and Hf isotope evidence
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- 作者：Kang Caoa ; b ; Ji-Feng Xua ; c ; jifengxu@gig.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Jian-Lin Chena ; c ; lzdxchen@gig.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Xiao-Xiao Huangb ; Jiang-Bo Renb ; Xiang-Dong Zhaod ; Zhen-Xing Liud
- 关键词：Late Triassic porphyry ; Cretaceous granite ; Metallogenesis ; Zhongdian arc ; Double-layer crustal structure
- 刊名：Journal of Asian Earth Sciences
- 出版年：2016
- 出版时间：1 January 2016
- 年：2016
- 卷：115
- 期：Complete
- 页码：455-467
- 全文大小：3927 K
文摘
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The Late Triassic porphyries and Late Cretaceous granites were formed at ca. 216 Ma and ca. 80 Ma, respectively.
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The Late Triassic porphyries were mainly derived from partial melting of a juvenile lower crust.
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The Late Cretaceous granites probably resulted from partial melting of old middle–upper crustal materials.
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The crust in the region of the Zhongdian arc has a double-layer structure.