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对末次冰期以来,山东地区平阴黄土剖面的稀土元素(REE)特征研究表明:山东平阴黄土剖面∑REE变化范围为201.28~141.71μg·g-1,平均值为168.84μg·g-1,REE呈现轻稀土元素(LREE)富集,重稀土元素(HREE)平坦,以及中等程度的Eu异常等特征。山东平阴黄土剖面的REE特征与位于渤海海峡的砣矶岛黄土最为接近,其次是我国西北内陆黄土,与黄河岸滩样品的REE特征相差甚多。该剖面不同层位的REE特征并不完全相同,表明平阴地区黄土与黄河岸滩物质来源差别比较大,与砣矶岛黄土物质来源十分相近,而与黄土高原黄土物源比较接近。同时,说明末次冰期以来平阴黄土剖面形成过程中沉积气候环境发生过明显变化,导致剖面沉积物近源和远源组分发生变化。
The REE characteristics of the Pingyin-Loess Section in Shandong Province since the last glacial period show that the ΣREE variation ranges from 201.28 to 141.71 μg · g-1 with an average of 168.84 μg · g-1 in the Pingyin section, REE presents features such as LREE enrichment, heavy HREE flattening and moderate Eu anomalies. The REE characteristics of the Pingyin section in Shandong are the closest to the Loess Island Loess in the Bohai Strait, followed by the Loess in the Northwest China and the REE in the Yellow River bank samples. The REE characteristics of different layers in this section are not exactly the same, which indicates that the source of loess and shore of the Yellow River beach in Pingyin is quite different. The source of loess is very similar to that of Loess Plateau, but close to that of Loess Plateau. At the same time, it shows that the sedimentary climate environment has changed obviously during the formation of the Pingyin loess section since the last glacial period, which resulted in the change of the near-source and far-source components of the profile sediments.