Chinese samples from the moon revealed the reason for the volcanic activity of the Earth’s moon

Analysis of lunar samples returned by China's "Chang'e 5" mission may have led to a new discovery of the volcanic state of this moon.

BingMag.com Chinese samples from the moon revealed the reason for the volcanic activity of the Earth’s moon

Analysis of lunar samples returned by China's "Chang'e 5" mission may have led to a new discovery of the volcanic state of this moon.

Moon rock and soil samples brought back to Earth by NASA's Apollo and Soviet Luna missions are all more than 3 billion years old, but quantitative analysis of Dorr had confirmed that the samples collected by the Chang'e-5 spacecraft in late 2020 are relatively young, only 2 billion years old.

Scientists had previously speculated that relatively large deposits of water or the presence of radioactive elements. And heat generation inside the moon may have caused "volcanism" and high volcanic activity in some areas of the moon's more recent history, but according to new data from Chang'e-5 published in the journal Nature, these hypotheses may be incorrect.

The production of magma (molten rocks) in the earth's crust or mantle and finally its eruption to the surface of a mass, "volcanism" m) during which lava, pyroclastic rocks and volcanic gases go out through a crack called a vent.

Researchers led by "Chen Yi" from the Institute of Geology and Geophysicists of the Chinese Academy of Sciences (IGGCAS) found that volcanism in the new lunar period could be due to the low melting point of parts of the moon's mantle and the presence of fast-melting and meltable components. In more recent times, it could have happened with an increase in temperature or a decrease in melting point. To better understand this problem, we need to estimate the temperature and pressure at which the young volcanic activities took place." Thus, the researchers simulated fractional crystallization and melting of the moon's mantle in a series of experiments. to compare 27 samples of basalt rocks from the Changi-5 mission with basalts from Apollo.

They found that the young magma collected by Changi-5 had a higher calcium oxide and titanium dioxide content than the older Apollo magma. . These fresh samples are rich in calcium-titanium, which were accumulated at the end of the moon's magma stage and melt more easily than the initial masses.

Dr. Su Bin, the lead author of this study "This is a surprising result, suggesting that the accumulation of the moon's magma ocean during its more recent history has made a significant contribution to the volcanic activity observed by Chang'e-5," he said. -align: right;">China for the first time discovered water closely on the surface of the moon

Thus, this new research, the results of which were published on October 21 (October 29) in the "Science Education" magazine. (Science Advances) has been published, for the first time, it provides evidence of a logical mechanism to explain young volcanic activity on the Moon, which can help to understand the thermal and magmatic evolution of the Moon.

Cover photo: a Volcanic region on the moon
Credit: NASA/GSFC/Arizona State University

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