类嫦娥五号玄武岩的非克里普贡献年轻月球陨石  

Chang'e-5 basalt-like non-KREEP young lunar meteorite

作　　者：许晶瑶 李秋立 路凯 李献华 Jing-Yao Xu;Qiu-Li Li;Kai Lu;Xian-Hua Li(State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Ministry of Education),School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [2]Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Ministry of Education),School of Geosciences and Info-Physics,Central South University,Changsha 410083,China [3]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science Bulletin》2024年第5期601-605,共5页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(42225301,42103023,42241104,and 42241105);China Postdoctoral Science Foundation(2020M670447 and 2022T150643);the Key Research Program of the Institute of Geology and Geophysics;Chinese Academy of Sciences(IGGCAS-202101)。

摘　　要：Lunar basalts offer key insights into the magmatic and thermal evolution of the Moon.Geochronologic constraints deduced from the Apollo and Luna mission samples,as well as lunar meteorites,had previously suggested that lunar volcanism occurred as early as ca.≥4.37 billion years ago(Ga)[1]and ceased around 2.9-2.8 Ga[2],with two major pulses occurring in 3.95-3.58 and 3.38-3.08 Ga[3].But analysis of lunar basaltic samples recently returned by the Chang’e-5 mission reveals 2-billion-year-old volcanism on the Moon,representing the youngest lunar basalts reported to date[4,5].One of the most popular hypotheses for the cause of longlived volcanism on the Moon is that the source region for young lunar volcanism was enriched in radioactive heat-producing elements[2,6].Lunar samples from 3.5 to 3.0 Ga exhibit a gradual increase in the potassium,rare-earth elements,and phosphorus(KREEP)-like component contribution[3],consistent with the radioactive heat-producing elements hypothesis.However,the demonstrably non-KREEP origin for the 2-billion-year-old Chang’e-5 basalts implies a possible transition in lunar volcanism away from a KREEP-like component contribution occurred between 3.0 and 2.03 Ga[7].Therefore,studying the characteristics and origin of magmatic activity during the period from 3.0 to2.03 Ga is essential to address the timing of the possible transition and to thus extend our understanding of sustaining long-lived volcanism on the Moon.However,this goal is currently hampered by limited available lunar materials.

关 键 词：MAGMATIC ORIGIN BASALT 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计] P184[天文地球—天文学]