Subduction-driven heterogeneity of the lithospheric mantle beneath the Cathaysia block, South China
文献类型：期刊论文
| 作者 | Xiao, Yan5,6; Zhang, Hong-Fu1,5,6; Su, Ben-Xun2,3,6; Liang, Zi3,5,6; Zhu, Bin3,5,6; Sakyi, Patrick Asamoah4 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 186页码:17 |
| 关键词 | Li isotopes Mantle xenolith Regional heterogeneity Subduction The Cathaysia block |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2019.104062 |
| 英文摘要 | To evaluate the modification of the lithospheric mantle by the Paleo-Pacific Ocean subduction beneath the Cathaysia block, we report major and trace elements, and Li isotopes of olivine from Niutoushan, Mingxi, Xilong and Jiande peridotite xenoliths in South China. Spoon-shaped, convex-upward and highly LREE-enriched chondrite-normalized REE patterns of clinopyroxene in the Niutoushan, Mingxi and Xilong xenoliths reflect the interplay between partial melting and subsequent enrichment by metasomatism. Lithium isotope systematics indicate that at least two different metasomatic events affected these peridotites. High Li concentrations in clinopyroxene (up to 59.1 ppm) are ascribed to diffusive Li influx from silicate melts. Olivine grains with lower diffusivity of Li have much higher Li concentrations (0.56-9.76 ppm) and lighter delta Li-7 values ( - 52.75 to +10.49 parts per thousand) than those in the Jiande and other peridotite xenoliths worldwide, showing a prominent carbonatite-metasomatic signature occurring before silicate metasomatism. In addition, increasing Li concentrations of olivine and clinopyroxene with increasing distance from the present subduction trench is consistent with those of low delta Mg-26 basalts in South China, indicating that the metasomatic agent was related to the westward subduction of the Paleo-Pacific slab. The Jiande lherzolite xenoliths further away from the trench show 'mantle-like' Li features and may represent upwelling asthenospheric materials accreted to the continent. Therefore, both types of metasomatism as well as upwelling asthenosphere could have played an important role in the modification of the chemical composition of the mantle beneath the Cathaysia block. |
| WOS关键词 | LITHIUM ISOTOPE FRACTIONATION ; CENOZOIC BASALTIC ROCKS ; PARTIAL MELTING CONTROL ; SINO-KOREAN CRATON ; HF-OS ISOTOPES ; PERIDOTITE XENOLITHS ; NORTH CHINA ; CARBONATITE-METASOMATISM ; EASTERN CHINA ; TRACE-ELEMENT |
| 资助项目 | National Natural Science Foundation of China[41673037] ; National Natural Science Foundation of China[41688103] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017095] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000504524700006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 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 ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95845]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Xiao, Yan |
| 作者单位 | 1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Ghana, Sch Phys & Math Sci, Dept Earth Sci, POB LG 58, Legon, Ghana 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, 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 | Xiao, Yan,Zhang, Hong-Fu,Su, Ben-Xun,et al. Subduction-driven heterogeneity of the lithospheric mantle beneath the Cathaysia block, South China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,186:17. |
| APA | Xiao, Yan,Zhang, Hong-Fu,Su, Ben-Xun,Liang, Zi,Zhu, Bin,&Sakyi, Patrick Asamoah.(2019).Subduction-driven heterogeneity of the lithospheric mantle beneath the Cathaysia block, South China.JOURNAL OF ASIAN EARTH SCIENCES,186,17. |
| MLA | Xiao, Yan,et al."Subduction-driven heterogeneity of the lithospheric mantle beneath the Cathaysia block, South China".JOURNAL OF ASIAN EARTH SCIENCES 186(2019):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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