XIA Bin
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaLU Ye
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaYUAN Yajuan
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaCHEN Weiyan
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaZHANG Xiao
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaXU Chi
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaYU Shengrui
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaWAN Zhifeng
1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China 2 Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes, Guangzhou 51006, China 3 Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510006, ChinaWe are grateful to the anonymous reviewers for their significant and constructive comments. The work was financially supported by the National Natural Science Foundation of China (41372208 and 41776056) and Natural Science Foundation of Guangdong Province (2017A030310395). Prof. Zhang Yuquan is thanked for his help in the discussion and polishing of this manuscript. We thank Prof. Tu Xianglin for the help with the chronology calculations, and Profs. Sun Weidong, and Liu Yin for the geochemical analysis.
New zircon U–Pb ages, whole-rock geochemistry and zircon Hf isotopes from the Habo porphyry Western Yunnan, China, were determined to provide constraints on the timing of uplift of the Eastern Tibetan Plateau. The intrusive rocks consist of shoshonitic porphyry (syenite porphyry and monzonite porphyry). Zircon laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb dating indicates coeval emplacement ages of ~35 Ma. The porphyries have alkaline affinities, enrichment in large ion lithophile elements (LILEs) and light rare earth elements (LREEs) (e.g., Rb, Th, U, Pb), with depletion of high field strength elements (HFSEs) (e.g., Nb, Ti, Ta) and weak Eu anomalies. They display uniform Lu–Hf isotopic compositions with negative zircon εHf(t) values ranging from -3.9 to -0.6. The chemical characteristics of the syenite porphyries indicated that they most likely originated from the lower crust, with mantle-derived material involved in their generation. Geochemically, the monzonite porphyries are similar to the syenite porphyries; however, the lower MgO contents suggest that they were produced by different degrees of partial melting of the same lower crust source. Combined with the geochemical and isotopic data in this paper, imply that the alkali-rich porphyries of the Habo polymetallic deposit were derived from the partial melting of lower crust, enriched by mantle magma, formed in a conversion stage from stress extrusion (a strike-slip shear process) to local stress relaxation (a strike-slip pull-apart process) at the Ailaoshao tectonic zone.
XIA Bin, LU Ye, YUAN Yajuan, CHEN Weiyan, ZHANG Xiao, XU Chi, YU Shengrui, WAN Zhifeng.2018. Mixing of Enriched Lithospheric Mantle-Derived and Crustal Magmas: Evidence from the Habo Cenozoic Porphyry in Western Yunnan[J]. ACTA GEOLOGICA SINICA(English edition),92(5):1753~1768
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