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In Situ Geochemical and Sr-Nd Isotope Analyses of Apatite from the Shaxiongdong Alkaline-Carbonatite Complex (South Qinling, China): Implications for Magma Evolution and Mantle Source

文献类型：期刊论文

作者Li, Jian1,2; Ye, Chenyang1,2; Ying, Jifeng1,2
刊名MINERALS
出版日期2022-05-01
卷号12期号:5页码:19
关键词apatite carbonatite hornblendite syenite in situ Sr-Nd isotopes
DOI10.3390/min12050587
英文摘要We present in situ major element, trace element, and Sr-Nd isotope data of apatite from an alkaline-carbonatite intrusion in the South Qinling Belt (SQB) to investigate their magma evolution and mantle sources. The Shaxiongdong (SXD) complex consists predominantly of the early Paleozoic hornblendite, nepheline syenite, and subordinate Triassic carbonatite. Apatites from all lithologies are euhedral to subhedral and belong to fluorapatite. Elemental substitution varies from REE3+ + Na+ + Sr2+ <-> 3Ca(2+) in carbonatite and syenite apatite to Si4+ + 2Na(+) + 2S(6+) + 4REE(3+) <-> 4P(5+) + 5Ca(2+) in hornblendite apatite. Apatites are characterized by enriched rare earth elements (REEs) and depleted high field strength elements (HFSEs). They record the distinct evolution of their parental magmas. The weak, negative Eu anomaly in hornblendite apatite, together with the lack of Eu anomalies in the bulk rocks, indicates a relatively reduced magma. The Sr-Nd isotope data of the apatite in SXD carbonatite, falling on the East African carbonatite line (EACL) and close to the field of Oldoinyo Lengai carbonatite, indicate that the SXD carbonatite is derived from a mixed mantle source consisting of the HIMU component and subducted sedimentary carbonates. The similarity in Sr and Nd isotopic compositions between the SXD hornblendite and syenite apatites and the early Paleozoic mafic-ultramafic dykes in the SQB suggests that they may share a common metasomatized lithospheric mantle source.
WOS关键词RARE-EARTH-ELEMENTS ; EAST-AFRICAN CARBONATITES ; LA-ICP-MS ; TRACE-ELEMENT ; LIQUID IMMISCIBILITY ; EXPERIMENTAL CONSTRAINTS ; COMPOSITIONAL VARIATION ; PARTITION-COEFFICIENTS ; TECTONIC EVOLUTION ; BRITISH-COLUMBIA
资助项目National Natural Science Foundation of China[41473035] ; National Natural Science Foundation of China[41873036]
WOS研究方向Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000801619800001
出版者MDPI
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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/105993]  
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Ying, Jifeng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jian,Ye, Chenyang,Ying, Jifeng. In Situ Geochemical and Sr-Nd Isotope Analyses of Apatite from the Shaxiongdong Alkaline-Carbonatite Complex (South Qinling, China): Implications for Magma Evolution and Mantle Source[J]. MINERALS,2022,12(5):19.
APA Li, Jian,Ye, Chenyang,&Ying, Jifeng.(2022).In Situ Geochemical and Sr-Nd Isotope Analyses of Apatite from the Shaxiongdong Alkaline-Carbonatite Complex (South Qinling, China): Implications for Magma Evolution and Mantle Source.MINERALS,12(5),19.
MLA Li, Jian,et al."In Situ Geochemical and Sr-Nd Isotope Analyses of Apatite from the Shaxiongdong Alkaline-Carbonatite Complex (South Qinling, China): Implications for Magma Evolution and Mantle Source".MINERALS 12.5(2022):19.

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来源：地质与地球物理研究所

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