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月球“休眠”为何还有火山喷发
Ren Min Ri Bao·2025-08-24 22:40

Core Insights - The research challenges the long-held belief that the Moon has been "dormant" for 3 billion years, revealing that volcanic activity occurred as recently as 2 billion years ago and 2.8 billion years ago, indicating ongoing geological processes [1][2] Group 1: Research Findings - The study identified two distinct types of basalt from the Chang'e 6 samples, one originating from deep within the Moon's mantle (over 120 kilometers) and the other from a shallower depth (60-80 kilometers) [1] - A new thermal dynamic mechanism was proposed, suggesting that as the Moon cooled, the lithosphere thickened, trapping magma in the upper mantle, which then led to volcanic eruptions by transferring heat upward [2] - Analysis of lunar remote sensing data indicated a significant change in volcanic activity mechanisms around 3 billion years ago, shifting from a complex array of heat sources to a dominant upward heat transfer mechanism [2] Group 2: Implications - The findings provide new insights into the thermal evolution history of the Moon and serve as a reference for understanding volcanic activity mechanisms on other small, airless celestial bodies [3]