A distinct ultra-depleted mantle domain under the equatorial western Pacific
文献类型：期刊论文
| 作者 | Xu, Feng1,2; Zhang, Guo-Liang4; Sanfilippo, Alessio3; Liu, Chen Hui2 |
| 刊名 | LITHOS
 |
| 出版日期 | 2026-05-01 |
| 卷号 | 528页码:11 |
| 关键词 | Mantle heterogeneity Ultra-depleted mantle Western Pacific Caroline plate |
| ISSN号 | 0024-4937 |
| DOI | 10.1016/j.lithos.2026.108482 |
| 通讯作者 | Zhang, Guo-Liang(zhanggliang5@mail.sysu.edu.cn) |
| 英文摘要 | The mantle under the western Pacific marginal basins is believed to have distinct compositions from that under the Pacific plate due to isolation by long-lived subduction zones. However, the origin and broader-scaler distribution of such mantle domains remain unclear. The Caroline plate is located between the Pacific plate and the West Philippine Basin, sampling transitional mantle without segmentation by the subduction barrier. Here, we report major and trace element and Sr-Nd-Pb-Hf isotope compositions of basalts from the eastern Caroline plate. These basalts exhibit similar epsilon Nd but higher 208Pb*/206Pb* compared to the Pacific mid-ocean ridge basalts (MORBs), and show distinctly higher epsilon Hf and Lu/Hf. These signatures, common in western Pacific marginal basin basalts, require melting of an ancient, garnet-bearing, highly-depleted mantle. We propose that this distinct ultradepleted mantle domain exist inherently under the equatorial western Pacific, possibly linked to mantle plume activities. |
| WOS关键词 | FORE-ARC BASALTS ; PHILIPPINE SEA ; HETEROGENEITY BENEATH ; HAFNIUM ISOTOPE ; RIDGE BASALT ; EVOLUTION ; INSIGHTS ; ANCIENT ; ORIGIN ; MODEL |
| 资助项目 | NSFC Shiptime Sharing Project[41949581] ; Deep Earth probe and Mineral Resources Exploration-National Science and Technology Major Project[2025ZD1005003] ; National Key Research and Development Program of China[2024YFF0807400] ; National Natural Science Foundation of China[42541604] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:001711675300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205015]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Zhang, Guo-Liang |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao, Peoples R China 2.Laoshan Lab, Earth Evolut & Dynam Res Ctr EDRC, Qingdao, Peoples R China 3.Univ Pavia, Dipartimento Sci Terra & Ambiente, Pavia, Italy 4.Sun Yat Sen Univ, Sch Marine Sci, Guangdong Prov Key Lab Marine Resources & Coastal, Zhuhai 519000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Feng,Zhang, Guo-Liang,Sanfilippo, Alessio,et al. A distinct ultra-depleted mantle domain under the equatorial western Pacific[J]. LITHOS,2026,528:11. |
| APA | Xu, Feng,Zhang, Guo-Liang,Sanfilippo, Alessio,&Liu, Chen Hui.(2026).A distinct ultra-depleted mantle domain under the equatorial western Pacific.LITHOS,528,11. |
| MLA | Xu, Feng,et al."A distinct ultra-depleted mantle domain under the equatorial western Pacific".LITHOS 528(2026):11. |
入库方式： OAI收割
来源：海洋研究所
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