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 : 2024-12-20 Epub Date: 2024-11-15 DOI:10.1126/science.adt1093

Zexian Cui, Qing Yang, Yan-Qiang Zhang, Chengyuan Wang, Haiyang Xian, Zhiming Chen, Zhiyong Xiao, Yuqi Qian, James W Head, Clive R Neal, Long Xiao, Fanglu Luo, Jingyou 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 those of the nearside, 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 used 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 that 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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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