Geological context of the Chang’e-6 landing area and implications for sample analysis  

作　　者：Zongyu Yue Sheng Gou Shujuan Sun Wei Yang Yi Chen Yexin Wang Honglei Lin Kaichang Di Yangting Lin Xianhua Li Fuyuan Wu 

机构地区：[1]Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [2]State Key Laboratory of Remote Sensing Science,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100101,China [3]School of Architecture and Civil Engineering,Chengdu University,Chengdu 610106,China [4]State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [5]Center for Excellence in Comparative Planetology,Chinese Academy of Sciences,Hefei 230026,China

出　　处：《The Innovation》2024年第5期64-71,63,共9页创新（英文）

基　　金：supported by the National Key Research and Development Program of China(grant no.2022YFF0503100);the B-type Strategic Priority Program of the Chinese Academy of Sciences(grant no.XDB41000000);the Open Fund of the State Key Laboratory of Remote Sensing Science(grant no.OFSLRSS202206);the National Natural Science Foundation of China(grant no.62227901);the key research program of the Institute of Geology and Geophysics,Chinese Academy of Sciences(grant no.IGGCAS-202401,IGGCAS-202204).

摘　　要：Research on returned samples can provide ground truth for the study of the geological evolution history of the Moon.However,previous missions all collected samples from the near side of the Moon,which is significantly different from the far side of the Moon in terms of the thickness of the lunar crust,magma activity,and composition.Therefore,the samples from the far side of the Moon are of great significance for a comprehensive understanding of the history of the Moon.China’s Chang’e-6(CE-6)probe has successfully landed on the lunar far side and will return samples in the coming days.With the precise location of the CE-6 landing site,a detailed analysis of the geological background is conducted in this research.The landing site of CE-6 is within the Apollo crater,which is inside the largest impact basin on the Moon,i.e.,the South Pole-Aitken(SPA)basin.According to the numerical simulation of the formation process of the SPA basin,CE-6 landed at the edge of the SPA impact melting zone,which is presumably composed of impact melt of the lunar mantle.The Apollo crater subsequently excavated deep material again,which constitutes the basement of the CE-6 landing area.Later,erupted basalt covered these basement rocks,and they also constitute the main source of the CE-6 samples.Based on the dating method of crater size-frequency distribution,we find that the basalt is2.50 Ga.The CE-6 samples also possibly contain basement rocks as excavated and ejected by craters,and they can provide crucial information for our understanding of lunar geological history along with the basalt samples.

关 键 词：BASALT BASEMENT CONSTITUTE 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计]