Liquid immiscibility acting on the formation of the Miaoya carbonatite-syenite complex in the South Qinling Belt, Central China
文献类型：期刊论文
| 作者 | Xia, Yu-hong2; Lai, Shao-cong2; Yang, Hang2; Zhu, Yu2; Qin, Jiang-feng2; Zhu, Ren-zhi2; Liu, Min2; Zhang, Fang-yi1; Zhong, Zhe-hao2 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 264页码:11 |
| 关键词 | South Qinling Belt Miaoya carbonatite-syenite complex Enriched mantle Liquid immiscibility REE enrichment |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2024.106072 |
| 通讯作者 | Lai, Shao-cong(shaocong@nwu.edu.cn) |
| 英文摘要 | As one of the largest carbonatite-syenite complexes enriched in rare earth elements (REE) in China, the magmahydrothermal processes of the Miaoya carbonatite-syenite complex (MCSC) are of great significance with respect to the enrichment of REE, and have therefore attracted much attention. Although the hydrothermal mineralization process of the Miaoya carbonatite-associated REE deposits has been well addressed, studies concerning its detailed magmatic process remain relatively limited. Here, we present new zircon U-Pb age, whole-rock major and trace element, and Sr-Nd-Pb isotope composition data of the MCSC, to help provide a comprehensive understanding of its source characteristics and related liquid immiscibility process. The Miaoya syenites studied here formed at 410.8 +/- 1.9 Ma, consistent with the formation ages of alkaline rocks (377-455 Ma) in the South Qinling Belt. Both samples in the MCSC share homogeneous Sr-Nd-Pb isotopes (i.e., carbonatites: 87Sr/86Sr(i) = 0.70361-0.70366, epsilon Nd(t) = +2.6-+2.8, 206Pb/204Pb = 17.81-18.13, 207Pb/204Pb = 15.51-15.53, and 208Pb/204Pb = 37.67-38.27; syenites: 87Sr/86Sr(i) = 0.70286-0.70524, epsilon Nd(t) = +2.0-+2.6, 206Pb/204Pb = 18.33-18.83, 207Pb/204Pb = 15.55-15.57, and 208Pb/204Pb = 37.88-38.38), suggesting a common enriched mantle source. The plagioclase identified in the carbonatites and the calcite observed in the syenites fully support the interaction between carbonate and silicate melts during the liquid immiscibility process. Similar to the liquid immiscibility experimental results, the Miaoya carbonatites are more enriched in Ca, Mn, Sr, and REE than the syenites, but are more depleted in Na, K, Al, Si, and high field strength elements, such as Nb, Ta, Zr, and Hf, further demonstrating that liquid immiscibility provided a crucial contribution to the formation of the MCSC. In combination with typical REE-rich carbonatite-alkaline complexes (e.g., the Mianning-Dechang carbonatiteassociated REE deposit belt of the western Yangtze Block, South China, and the Mountain Pass carbonatiteassociated REE deposits of California, USA), we propose that the enriched mantle and the liquid immiscibility are significant for the REE enrichment of carbonatite-alkaline complexes. |
| WOS关键词 | NEOPROTEROZOIC TECTONIC EVOLUTION ; TRACE-ELEMENT COMPOSITION ; PB ZIRCON AGE ; ISOTOPIC CHARACTERISTICS ; PHASE-RELATIONS ; SILICATE ROCKS ; MOUNTAIN PASS ; MANTLE SOURCE ; ORIGIN ; ALKALINE |
| 资助项目 | National Natural Science Foundation of China[42172056] ; National Natural Science Foundation of China[41772052] ; National Natural Science Foundation of China[42202048] ; Young Talent Fund of Association for Science and Technology in Shaanxi, China[20230706] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001188642900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/185004]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Lai, Shao-cong |
| 作者单位 | 1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Yu-hong,Lai, Shao-cong,Yang, Hang,et al. Liquid immiscibility acting on the formation of the Miaoya carbonatite-syenite complex in the South Qinling Belt, Central China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2024,264:11. |
| APA | Xia, Yu-hong.,Lai, Shao-cong.,Yang, Hang.,Zhu, Yu.,Qin, Jiang-feng.,...&Zhong, Zhe-hao.(2024).Liquid immiscibility acting on the formation of the Miaoya carbonatite-syenite complex in the South Qinling Belt, Central China.JOURNAL OF ASIAN EARTH SCIENCES,264,11. |
| MLA | Xia, Yu-hong,et al."Liquid immiscibility acting on the formation of the Miaoya carbonatite-syenite complex in the South Qinling Belt, Central China".JOURNAL OF ASIAN EARTH SCIENCES 264(2024):11. |
入库方式： OAI收割
来源：海洋研究所
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