| Exploring small-scale recycled mantle components with intraplate continental twin volcanoes | |
Sun, Ming-Dao1,2,3; Xu, Yi-Gang1,2,3; Gazel, Esteban4; Li, Jie1,2 ; Zhang, Wan-Feng1,2; Zhang, Le1,2; He, Peng-Li1,2; Xiao, Yuan-Yuan5; Jourdan, Fred6,7,8; Wilde, Simon A.8
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| 2022-06-05 | |
| 发表期刊 | CHEMICAL GEOLOGY
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| ISSN | 0009-2541 |
| 卷号 | 598页码:14 |
| 通讯作者 | Sun, Ming-Dao(mdsun@gig.ac.cn) |
| 摘要 | Primitive magmas with distinct geochemical signatures that record mantle heterogeneity are obscured in continental intraplate volcanic settings owing to crustal interaction. Here, we report new geochronological and geochemical data for two adjacent Late Neogene primitive intraplate volcanoes in Northeast China: the Great and Lesser Wangqing River twin volcanoes (GWR/LWR). Our results suggest that the GWR and LWR volcanics are controlled by olivine crystal sorting and that crustal contamination is negligible, which implies these twin volcanoes provide a rare window into mantle components. The LWR tephrite is marked by moderate enrichment of light rare earth elements (REEs) with significant positive Sr anomalies. It is also enriched in radiogenic Sr-Nd-Hf-Pb isotopes but exhibits Os-187/Os-188 values that are comparable to those of the primitive upper mantle. The GWR volcanics (picrite, basanite and tephrite) are characterised by a steeper REE pattern and a lack of Sr anomalies, while being isotopically more radiogenic. Combined with olivine chemistry, which reveals a hybrid source lithology, we propose that the LWR and GWR sampled recycled lower and upper oceanic crust components, respectively. Both components have high Sr-87/Sr-86 and low Pb-206/Pb-204 ratios, akin to an enriched mantle I (EM1) source, indicating that the EM1 components can be formed by recycling oceanic crust with limited sediment. |
| 关键词 | Intracontinental twin volcanoes Primitive alkaline magma Recycled oceanic crust Northeast China |
| DOI | 10.1016/j.chemgeo.2022.120842 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foun-dation of China[41973030] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0202] ; National Natural Science Foundation of China[41890812] |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000788866800003 |
| 出版者 | ELSEVIER |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/178967 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Sun, Ming-Dao |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China 4.Cornell Univ, Earth & Atmospher Sci, Ithaca, NY 14853 USA 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 6.Curtin Univ, John de Laeter Ctr, Western Australian Argon Isotope Facil, Perth, WA 6845, Australia 7.Curtin Univ, TTGeR, Perth, WA 6845, Australia 8.Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6102, Australia |
| 推荐引用方式 GB/T 7714 | Sun, Ming-Dao,Xu, Yi-Gang,Gazel, Esteban,et al. Exploring small-scale recycled mantle components with intraplate continental twin volcanoes[J]. CHEMICAL GEOLOGY,2022,598:14. |
| APA | Sun, Ming-Dao.,Xu, Yi-Gang.,Gazel, Esteban.,Li, Jie.,Zhang, Wan-Feng.,...&Wilde, Simon A..(2022).Exploring small-scale recycled mantle components with intraplate continental twin volcanoes.CHEMICAL GEOLOGY,598,14. |
| MLA | Sun, Ming-Dao,et al."Exploring small-scale recycled mantle components with intraplate continental twin volcanoes".CHEMICAL GEOLOGY 598(2022):14. |
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