NanoSIMS analysis of water content in bridgmanite at the micron scale: An experimental approach to probe water in Earth's deep mantle
文献类型：期刊论文
| 作者 | Yang, Ya-Nan1,4; Du, Zhixue1,4; Lu, Wenhua1,3,4; Qi, Yue1,4; Zhang, Yan-Qiang1,4; Zhang, Wan-Feng1,4; Zhang, Peng-Fei2 |
| 刊名 | FRONTIERS IN CHEMISTRY
 |
| 出版日期 | 2023-04-07 |
| 卷号 | 11页码:12 |
| 关键词 | water bridgmanite NanoSIMS high pressure deep Earth |
| ISSN号 | 2296-2646 |
| DOI | 10.3389/fchem.2023.1166593 |
| 英文摘要 | Water, in trace amounts, can greatly alter chemical and physical properties of mantle minerals and exert primary control on Earth's dynamics. Quantifying how water is retained and distributed in Earth's deep interior is essential to our understanding of Earth's origin and evolution. While directly sampling Earth's deep interior remains challenging, the experimental technique using laser-heated diamond anvil cell (LH-DAC) is likely the only method available to synthesize and recover analog specimens throughout Earth's lower mantle conditions. The recovered samples, however, are typically of micron sizes and require high spatial resolution to analyze their water abundance. Here we use nano-scale secondary ion mass spectrometry (NanoSIMS) to characterize water content in bridgmanite, the most abundant mineral in Earth's lower mantle. We have established two working standards of natural orthopyroxene that are likely suitable for calibrating water concentration in bridgmanite, i.e., A119(H2O) = 99 +/- 13 mu g/g (1SD) and A158(H2O) = 293 +/- 23 mu g/g (1SD). We find that matrix effect among orthopyroxene, olivine, and glass is less than 10%, while that between orthopyroxene and clinopyroxene can be up to 20%. Using our calibration, a bridgmanite synthesized by LH-DAC at 33 +/- 1 GPa and 3,690 +/- 120 K is measured to contain 1,099 +/- 14 mu g/g water, with partition coefficient of water between bridgmanite and silicate melt similar to 0.025, providing the first measurement at such condition. Applying the unique analytical capability of NanoSIMS to minute samples recovered from LH-DAC opens a new window to probe water and other volatiles in Earth's deep mantle. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000975598300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74169]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Yang, Ya-Nan; Du, Zhixue |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 2.China Univ Geosci, Fac Earth Resources, Wuhan, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ya-Nan,Du, Zhixue,Lu, Wenhua,et al. NanoSIMS analysis of water content in bridgmanite at the micron scale: An experimental approach to probe water in Earth's deep mantle[J]. FRONTIERS IN CHEMISTRY,2023,11:12. |
| APA | Yang, Ya-Nan.,Du, Zhixue.,Lu, Wenhua.,Qi, Yue.,Zhang, Yan-Qiang.,...&Zhang, Peng-Fei.(2023).NanoSIMS analysis of water content in bridgmanite at the micron scale: An experimental approach to probe water in Earth's deep mantle.FRONTIERS IN CHEMISTRY,11,12. |
| MLA | Yang, Ya-Nan,et al."NanoSIMS analysis of water content in bridgmanite at the micron scale: An experimental approach to probe water in Earth's deep mantle".FRONTIERS IN CHEMISTRY 11(2023):12. |
入库方式： OAI收割
来源：广州地球化学研究所
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