摘要
黄海 YA0 1孔沉积物稀土元素总量 (ΣREE)变化范围较大 ,接近于全球沉积物平均稀土元素含量的下限 ,略高于黄海、东海 ,明显低于渤海、南海表层沉积物的平均含量。Σ REE和 δEu、δCe值的变化受岩性和沉积环境变化的控制。各类沉积物的稀土元素配分模式非常一致 ,表明这些沉积物具有相同的物源区。Ce/L a、Sm/Nd比值的 DF值判别结果表明 ,钻孔沉积物与现代黄河沉积物更为接近。
The total content of rare earth element(ΣREE)ranges from 70 15 to 202 04μg/g in sediments of core YA01.The average content of ΣREE is 155 18μg/g,approaching lower limit of the average content of ΣREE in sediments in the continental crust,and is slightly more than that of Yellow Sea and East China Sea,and less than that of Bohai Sea and South China Sea.The change trend of standard curves of REE has no difference in various types of sediments,which suggests that the sediments of core YA01 come from the same material source.ΣREE,δEu and δCe have obvious vertical changes,which may reflect lithologic change and sedimentary environment.Base on Sm /Nd and Ce/La ratios,the sediment source is near sediments from Yellow River.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2001年第3期51-56,共6页
Marine Geology & Quaternary Geology
基金
黄
东海浅钻古环境研究
