Structure and Formation Mechanism of Lunar RegolithOA
Lunar regolith is a thin layer of weakly cohesive detrital materials covering the lunar surface.Studies on returned lunar samples have revealed that the lunar regolith mainly consists of fragments of rocks,minerals,breccia,glasses,and agglutinates with a median grain size of~40 to 800μm.The lunar regolith was produced from the space weathering of lunar rocks,including the following processes:meteoritic bombardment,solar wind implantation,solar and galactic cosmic ray irradiation,and gardening.During space weathering,the maturity of the lunar regolith increases as the median particle size decreases,and specific minerals and structures(such as nano Fe^(0))are produced.The chemical and isotopic compositions of the lunar regolith also change via interactions with solar wind and cosmic rays.Volatiles resulting from solar wind,asteroid impacts,and volcanic degassing can be preserved in the lunar regolith and redistributed to the lunar polar regions during micrometeorite bombardment.Cosmic radiation can produce nuclides through spallation and neutron capture reactions,thereby changing the isotopic compositions of the lunar regolith,which could reflect the gardening history of the lunar regolith.Thus,the lunar regolith carries massive information about the space weathering history,impacting processes,and the interior of the Moon.In this review,we discuss the progress that has been made toward understanding the composition,the lateral and vertical structure,and the formation processes of the lunar regolith,in particular,the progress that has been made after the Chang’E mission series.
Liping Qin;Zongyu Yue;Sheng Gou;Yingnan Zhang;Guangfei Wei;Ke Shi;Xuhang Zhang;Bing Yang
State Key Laboratory of Lithospheric and Environmental Coevolution/Deep Space Exploration Laboratory,University of Science and Technology of China,Hefei 230026,China CAS Center for Excellence in Comparative Planetology,Hefei 230026,ChinaKey Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,ChinaKey Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,ChinaState Key Laboratory of Lithospheric and Environmental Coevolution/Deep Space Exploration Laboratory,University of Science and Technology of China,Hefei 230026,China CAS Center for Excellence in Comparative Planetology,Hefei 230026,ChinaInstitute of Deep Space Sciences,Deep Space Exploration Laboratory,Hefei 230026,ChinaKey Laboratory of Information System and Technology,Beijing Institute of Control and Electronic Technology,Beijing 100038,ChinaState Key Laboratory of Lithospheric and Environmental Coevolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,ChinaState Key Laboratory of Lithospheric and Environmental Coevolution/Deep Space Exploration Laboratory,University of Science and Technology of China,Hefei 230026,China CAS Center for Excellence in Comparative Planetology,Hefei 230026,China
天文与地球科学
space weatheringlunar rocksincludinglunar regolithmeteoritic bombardmentweakly cohesive detrital materialsbombardmentsolar wind implantationsolar galactic cosmic ray irradiationandsolar wind implantation
《Space(Science & Technology)》 2025 (1)
P.910-928,19
supported by the National Natural Science Foundation of China(41930216 and 42241102)the Fundamental Research Funds for the Central Universities of China(WK3410000019).
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