嫦娥六号玄武岩为揭示月球地质演化提供关键线索

Core Insights - The research team from the Institute of Geology and Geophysics of the Chinese Academy of Sciences has conducted high-precision potassium isotope analysis on samples collected by the Chang'e 6 mission, revealing significant insights into the impact event of the South Pole-Aitken Basin and its effects on the Moon's evolution [1] Group 1 - The Chang'e 6 mission collected samples from the largest impact basin on the Moon, the South Pole-Aitken Basin, providing critical samples for studying the effects of this large-scale impact event [1] - The research team performed high-precision potassium isotope analysis on milligram-scale basalt single grains from the Chang'e 6 mission, finding that the basalt has higher potassium-41 and potassium-39 ratios compared to Apollo samples from the Moon's near side [1] - The study confirmed that the impact event altered the potassium isotope composition of the Moon's mantle, leading to potassium loss and elevated isotope ratios, which may have suppressed volcanic activity on the Moon's far side [1]