A sample of the Moon's far side retrieved by Chang'e-6 contains 2.83-billion-year-old basalt.

IF 44.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Science Pub Date : 2024-11-15 DOI:10.1126/science.adt1093
Zexian Cui, Qing Yang, Yan-Qiang Zhang, Chenyuan Wang, Haiyang Xian, Zhiming Chen, Zhiyong Xiao, Yuqi Qian, James W Head, Clive R Neal, Long Xiao, Fanglu Luo, Jinyou Chen, Pengli He, Yonghua Cao, Qin Zhou, Fangfang Huang, Linli Chen, Bo Wei, Jintuan Wang, Ya-Nan Yang, Shan Li, Yiping Yang, Xiaoju Lin, Jianxi Zhu, Le Zhang, Yi-Gang Xu
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Abstract

Remote sensing observations have shown that the far side of the Moon (lunar farside) has different geology and rock composition to the near side, including the abundances of potassium, rare earth elements, and phosphorus (collectively known as KREEP). The Chang'e-6 (CE-6) spacecraft collected samples from the South Pole-Aitken (SPA) basin on the farside and brought them to Earth. We use lead-lead and rubidium-strontium isotope systems to date low-titanium basalt in a CE-6 sample, finding a consistent age of 2830 ± 5 million years. We interpret this as the date of volcanism in SPA and incorporate it into lunar crater chronology. Strontium, neodymium and lead isotopes indicate the volcanic magma was from a lunar mantle source depleted in incompatible elements and containing almost no KREEP component.

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嫦娥六号取回的月球远侧样本含有28.3亿年前的玄武岩。
遥感观测表明,月球远侧的地质和岩石成分与近侧不同,包括钾、稀土元素和磷(统称为KREEP)的丰度。嫦娥六号(CE-6)飞船从远侧的南极-艾特肯(SPA)盆地采集了样本,并将它们带到了地球。我们利用铅-铅和铷-锶同位素系统对嫦娥六号样本中的低钛玄武岩进行了测年,发现其年龄一致为28.3±5百万年。我们将其解释为 SPA 火山喷发的日期,并将其纳入月球环形山年代学。锶、钕和铅同位素表明,火山岩浆来自贫乏不相容元素的月幔源,几乎不含 KREEP 成分。
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来源期刊
Science
Science 综合性期刊-综合性期刊
CiteScore
61.10
自引率
0.90%
发文量
0
审稿时长
2.1 months
期刊介绍: Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science serves as a forum for discussion of important issues related to the advancement of science by publishing material on which a consensus has been reached as well as including the presentation of minority or conflicting points of view. Accordingly, all articles published in Science—including editorials, news and comment, and book reviews—are signed and reflect the individual views of the authors and not official points of view adopted by AAAS or the institutions with which the authors are affiliated. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.
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