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对腾格里沙漠南缘武威黄土剖面１８个样品系统的元素地球化学分析结果表明，剖面中８种常量元素氧化物总量平均值为８８．９９％，且整个剖面中变化微弱（８７．２６％～９０．４６％），显示了构成武威黄土物质组成的均一性；反映风化程度的Ｆｅ２Ｏ３／ＦｅＯ和Ａｌ２Ｏ３／ＳｉＯ２，值变化较为明显，平均值分别为１．４６（１．０２～２．８６）和０．１９（０．１７～０．２２）；稀土元素总含量平均值为１８５．４２（１６９．３１～１９９．８２）μｇ／ｇ，稀土分布斜率较大、有较明显Ｅｕ异常，ΣＬＲＥＥ／ΣＨＲＥＥ值平均为８．２３（７．３８～９．６０），表现出较显著的轻重稀土的分镏作用，指示着一定程度的风化作用；而代表原岩特征的稀土参数Ｅｕ／Ｓｍ、Ｓｍ／Ｎｄ、Ｎｄ／Ｌａ、δＣｅ、δＥｕ等变化不大，反映了不同时代黄土物质来源的一致性
The elemental geochemical analysis of 18 sample systems on the Loess Plateau in the southern part of the Tengger Desert shows that the average total amount of oxides of the eight major elements in the profile is 88.99%, with a slight change in the entire section (87.26 % ~ 90.46%), which shows the homogeneity of the material composition of Wuwei loess. The values of Fe2O3 / FeO and Al2O3 / SiO2 reflect the degree of weathering obviously, with the average values of 1.46 (1.02 ~ 2. 86) and 0.19 (0.17-0.22). The average content of REE was 185.42 (169.31-199.82) μg / g, and the slope of REE distribution was relatively large with obvious Eu anomalies , And the mean value of ΣLREE / ΣHREE is 8.23 (7.38 ~ 9.60), which shows more significant fractionation of light and heavy rare earths and indicates a certain degree of weathering. However, the REE / Sm, Sm / Nd, Nd / La, δCe, δEu and other changes not Large, reflects the consistency of source material of loess in different ages