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  2. 地质与地球物理研究所
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  4. 岩石圈演化国家重点实验室
Heterogeneous sub-ridge mantle of the Neo-Tethys: Constraints from Re-Os isotope and HSE compositions of the Xigaze ophiolites

文献类型：期刊论文

作者Zhang, Chang1,2,3; Liu, Chuan-Zhou1,2,4; Ji, Wen-Bin5; Liu, Tong1,2; Wu, Fu-Yuan1,4,6
刊名LITHOS
出版日期2020-12-15
卷号378页码:14
关键词Luqu harzburgites Xigaze ophiolites Neo-Tethys Re-Os isotopes Highly siderophile elements
ISSN号0024-4937
DOI10.1016/j.lithos.2020.105819
英文摘要Luqu harzburgites from the Xigaze ophiolites represent ultra-refractory mantle domains in the Yarlung-Tsangbo Suture Zone, which is accepted as relics of the Neo-Tethys. These ultra-depleted harzburgites provide an excellent opportunity to constrain the ophiolite generation from the perspectives of Re-Os isotopes and highly siderophile elements. The depleted HSE patterns of several samples suggest that these harzburgites had experienced higher extents of partial melting than the normal abyssal peridotites. These conclusions were also evidenced by the petrological observations, such as the low modal contents of clinopyroxenes and the rare occurrence of residual sulfides. Re-depleted model ages (T-RD) of two Luqu harzburgites with ultra-low absolute Re abundances yield an estimate of ca. 2.0 Ga for an ancient melting event, which implies that the Luqu peridotites have ancient domains. Even though the compositions of IPGE (Os, Ir, and Ru) in all Luqu samples are quite homogeneous and comparable to those of the primitive upper mantle (PUM), the variations of PPGE (Pt and Pd) and Re indicate that the Luqu harzburgites had experienced late-stage melt-rock interaction. These infiltrating melts are constrained to be silica-rich and sulfur-saturated and might be different from the melt accounted for themetasomatic clinopyroxene. The sulfide-richmelt agents are speculated to be derived fromrecycling ancient components, which is supported by several samples with elevated Os-187/Os-188 compositions and enriched Re abundances. Considering the dynamic environments and evolution history of the Neo- Tethys, these ultradepleted mantle domains represented by Luqu harzburgites are readily formed by multi-stage processes of partial melting and melt-rock interactions in the mid-ocean ridges. Also, fragments of ancient subducted oceanic slabs within the mantle probably provide the sources of the recycling melts pervasive in the Xigaze mantle. (C) 2020 Elsevier B.V. All rights reserved.
资助项目National Natural Science Foundation of China[41802065] ; National Natural Science Foundation of China[41673038] ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences[QYZDB-SSW-DQC032] ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM201702] ; China Postdoctoral Science Foundation[2018M631569] ; China Scholarship Council[201804910292]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000598169800001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; Opening Foundation of the Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/99939]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Zhang, Chang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Lausanne, Inst Earth Sci, CH-1015 Lausanne, Switzerland
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Northwest Univ, Dept Geol, Xian 710069, Shaanxi, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Chang,Liu, Chuan-Zhou,Ji, Wen-Bin,et al. Heterogeneous sub-ridge mantle of the Neo-Tethys: Constraints from Re-Os isotope and HSE compositions of the Xigaze ophiolites[J]. LITHOS,2020,378:14.
APA Zhang, Chang,Liu, Chuan-Zhou,Ji, Wen-Bin,Liu, Tong,&Wu, Fu-Yuan.(2020).Heterogeneous sub-ridge mantle of the Neo-Tethys: Constraints from Re-Os isotope and HSE compositions of the Xigaze ophiolites.LITHOS,378,14.
MLA Zhang, Chang,et al."Heterogeneous sub-ridge mantle of the Neo-Tethys: Constraints from Re-Os isotope and HSE compositions of the Xigaze ophiolites".LITHOS 378(2020):14.

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来源：地质与地球物理研究所

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