A shallow ( < 100 km) ilmenite-bearing pyroxenitic source for young lunar volcanism
文献类型：期刊论文
| 作者 | Wang, Chengyuan; Xu, Yi-Gang; Zhang, Le; Chen, Zhiming; Xia, Xiaoping ; Lin, Mang; Guo, Feng
|
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 639页码:9 |
| 关键词 | Chang 'e-5 basalts Ilmenite-bearing cumulate Mare volcanism Lunar mantle Gravitational restructuring |
| ISSN号 | 0012-821X |
| DOI | 10.1016/j.epsl.2024.118770 |
| 英文摘要 | The lunar magma ocean (LMO) hypothesis predicts that the uppermost mantle (-60-100 km) is composed of ilmenite-bearing cumulate (IBC), which may have sunk deeply due to gravitational instability. However, the extent to which this process restructured the lunar mantle and influenced mare volcanism remains unclear. Here, we approach this issue by examining pyroxenes in Chang'E-5 (CE5) basalts and petrological modeling. We show that the low Mg# and negative anomalies in Ti and Ta of CE5 basalts cannot be produced by extensive fractionation of peridotite-derived low-Ti basalts, but were most likely formed through partial melting of a shallow (< 100 km) IBC pyroxenite source. This model is also applicable to the -3.0 Ga lunar basaltic meteorites. The increasing involvement of IBC sources in young lunar magmas, also revealed by the remote-sensing data, implies an inefficient gravitational restructuring process during the late LMO stage and provides new insights into the thermochemical state of the lunar interior. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001247785600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78432]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Wang, Chengyuan; Xu, Yi-Gang |
| 作者单位 | Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chengyuan,Xu, Yi-Gang,Zhang, Le,et al. A shallow ( < 100 km) ilmenite-bearing pyroxenitic source for young lunar volcanism[J]. EARTH AND PLANETARY SCIENCE LETTERS,2024,639:9. |
| APA | Wang, Chengyuan.,Xu, Yi-Gang.,Zhang, Le.,Chen, Zhiming.,Xia, Xiaoping.,...&Guo, Feng.(2024).A shallow ( < 100 km) ilmenite-bearing pyroxenitic source for young lunar volcanism.EARTH AND PLANETARY SCIENCE LETTERS,639,9. |
| MLA | Wang, Chengyuan,et al."A shallow ( < 100 km) ilmenite-bearing pyroxenitic source for young lunar volcanism".EARTH AND PLANETARY SCIENCE LETTERS 639(2024):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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