燕赵孤侠 (2025-05-30 14:15):
#paper doi:10.1126/science.adk6635, Returned samples indicate volcanism on the Moon 120 million years ago 之前,我们都觉得月球早就没有活动了,像个死寂的大石头,没想到这篇研究直接打脸 —— 人家 1.2 亿年前还在 “冒火” 搞火山活动呢! 研究团队这次用了超精准的年代测定技术。以前测岩石年龄误差不小,这次靠质谱分析,直接把误差范围缩得超小,还多管齐下交叉验证数据,这波操作简直是科研界严谨的到极致,也给以后研究太空指了条明路。 从这篇论文我特别有感触,科学探索真是永无止境。以前以为铁板钉钉的结论,碰上新技术、新方法,瞬间被颠覆。所以搞研究真不能墨守成规,得大胆创新。而且研究团队这种死磕细节、精益求精的精神,太值得学习了,这才是推动科学进步的关键。
Returned samples indicate volcanism on the Moon 120 million years ago
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Abstract:
There is extensive geologic evidence of ancient volcanic activity on the Moon, but it is unclear how long that volcanism persisted. Magma fountains produce volcanic glasses, which have previously been found in samples of the Moon’s surface. We investigated ~3000 glass beads in lunar soil samples collected by the Chang’e-5 mission and identified three as having a volcanic origin on the basis of their textures, chemical compositions, and sulfur isotopes. Uranium-lead dating of the three volcanic glass beads shows that they formed 123 ± 15 million years ago. We measured high abundances of rare earth elements and thorium in these volcanic glass beads, which could indicate that such recent volcanism was related to local enrichment of heat-generating elements in the mantle sources of the magma.
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