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DOI | 10.1029/2020GL087260 |
The Mantle Transition Zone Hosts the Missing HIMU Reservoir Beneath Eastern China | |
Qian, Sheng-Ping1,2; Nichols, Alexander R. L.3; Zhang, Le1,4; Xu, Yi-Gang1,4; Li, Jie1,4; Guo, Yu-Long2; Ren, Zhong-Yuan1,4 | |
2020-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; New Zealand |
英文摘要 | The Earth's mantle shows large-scale geochemical heterogeneities bounded by several identifiable end-member compositions. However, the origin of extreme mantle reservoirs, for example, high U-238/Pb-204 (HIMU), and their location in the Earth's interior remains poorly constrained. Clinopyroxenes from late Cenozoic Wudi lavas in eastern China have heterogeneous Pb isotopic compositions, even though the erupted lavas are isotopically homogeneous. Our new results provide, to our knowledge, the first evidence for the existence of a HIMU-like component in the sources of late Cenozoic lavas. Analyses of olivines and their host lavas indicate that the basaltic melts are derived from partial melting of carbonated peridotite. The HIMU source is likely to be younger than 700 Ma old and related to subduction events of the Paleo-Asian ocean. In addition to deep and ancient recycling, storage of a metasomatically produced mantle reservoir in the mantle transition zone may be an important mechanism for developing extreme isotopic signatures. |
英文关键词 | late Cenozoic basalts HIMU component mantle transition zone carbonated mantle source |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536639500049 |
WOS关键词 | LOWER CRUSTAL XENOLITHS ; TRACE-ELEMENTS ; INTRAPLATE BASALTS ; ALKALINE BASALTS ; MELT INCLUSIONS ; STAGNANT SLAB ; OCEANIC-CRUST ; EVOLUTION ; PB ; LITHOSPHERE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279924 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China; 2.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China; 3.Univ Canterbury, Dept Geol Sci, Christchurch, New Zealand; 4.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Qian, Sheng-Ping,Nichols, Alexander R. L.,Zhang, Le,et al. The Mantle Transition Zone Hosts the Missing HIMU Reservoir Beneath Eastern China[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(9). |
APA | Qian, Sheng-Ping.,Nichols, Alexander R. L..,Zhang, Le.,Xu, Yi-Gang.,Li, Jie.,...&Ren, Zhong-Yuan.(2020).The Mantle Transition Zone Hosts the Missing HIMU Reservoir Beneath Eastern China.GEOPHYSICAL RESEARCH LETTERS,47(9). |
MLA | Qian, Sheng-Ping,et al."The Mantle Transition Zone Hosts the Missing HIMU Reservoir Beneath Eastern China".GEOPHYSICAL RESEARCH LETTERS 47.9(2020). |
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