REE characteristics and Nd isotopic compositions of Lunar pristine rocks:Implications for petrogenesis of pristine rocks and source regions  

作　　者：FU Xiaohui ZOU Yonghao OUYANG Ziyuan 

机构地区：[1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Insititute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China [3]Graduate School of Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Journal Of Geochemistry》2010年第3期326-336,共11页中国地球化学学报

基　　金：supported by The National High Technology Research and Development Program of China (No.2008AA12A213)

摘　　要：This paper compile the rare-earth elements and Nd isotope data for lunar pristine rocks from investiga-tions in recent years. Using these data, we compared the REE characteristics of lunar pristine rocks and Nd isotopic compositions of their source regions. Based on the Lunar Magma Ocean model, we then studied their formation and petrogenetic correlations of Mg suite, alkali suite, and KREEP, with especial emphasis on the importance of assimilation during early magmatism. And Nd isotopic compositions of mare basalt samples suggest that mantle sources of mare basalts should be heterogeneous, which has not yet been explained by several current models.This paper compile the rare-earth elements and Nd isotope data for lunar pristine rocks from investiga-tions in recent years. Using these data, we compared the REE characteristics of lunar pristine rocks and Nd isotopic compositions of their source regions. Based on the Lunar Magma Ocean model, we then studied their formation and petrogenetic correlations of Mg suite, alkali suite, and KREEP, with especial emphasis on the importance of assimilation during early magmatism. And Nd isotopic compositions of mare basalt samples suggest that mantle sources of mare basalts should be heterogeneous, which has not yet been explained by several current models.

关 键 词：稀土元素特征 同位素组成 岩石成因 钕同位素 源区 农历 原始数据 组成特征 

分 类 号：P618.44[天文地球—矿床学] P588.121[天文地球—地质学]