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《Geochimica》 2010-01
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Differentiation of the lunar magma ocean and formation of the lunar crust

ZHU Dan1,2,WANG Shi-jie3 and ZHU Cheng-ming41. State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China; 2. Guangzhou Institutes of Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China; 3. The Research Center for Luna and Planet Sciences,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China; 4. The Laboratory of the Earth's Interior and Geofluid Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China  
We review the original idea of the magma ocean in this paper,and describe in more detail how the anorthositic lunar crust formed through crystallization of the lunar magma ocean during cooling. The magma ocean hypothesis is consistent with several lines of evidence including planet formation,core-mantle differentiation and geochemical observations,and it is proved as an inevitable stage in the early evolution of planets. The magma ocean is assumed to be homogeneous in previous models during crystallization. Based on the recent advance in experimental igneous petrology,we question this assumption,and propose that an gabbrotic melt,from which the anorthositic lunar crust crystallized,can be produced by Soret effect,rather than by magma fractionation. This novel hypothesis supplies with a different view for the future researches.
【Fund】: 国家自然科学基金(40873055 40772059);; 中国科学院知识创新工程方向性项目(KZCX2-YW-Q04-06)
【CateGory Index】: P184
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