南黄海中部沉积岩心的稀土元素地球化学特征

Geochemical Characteristics of Rare Earth Elements of Sediment Cores from the Central South Yellow Sea

根据南黄海中部所取得的 3 个柱状样岩心资料，对该区域的稀土元素地球化学特征进行了分析研究。结果表明：地层中稀土元素含量的变化反映了物源环境，为地层划分提供了有效的信息；相关分析表明，稀土元素与 Ti、Co、Ni、Fe 等元素呈正相关，而与 Ca、Sr 等元素呈负相关；球粒陨石标准化的稀土元素 ( REE ) 分布模式也表明了研究区沉积环境有一次较大的变化； 稀土元素的富集因子和判别函数研究表明，该区域的物质来源可能与黄河的物质较为密切。

：According to the data from three cores collected in the central South Yellow Sea, the geochemical characteristics of rare earth elements (REE) are discussed in this paper. The results show that changes of REE contents in strata reflect the matter sources and sedimentary environmental changes and may provide effectual information for stratum partitioning; Correlation analysis shows REE is correlated positively with Ti, Co, Ni, Fe, and negatively with Ca, Sr; Chondrite-normalized REE distribution patterns of samples in cores also indicate that the research of core samples has verified a sharp change in the sedimentary environment; Mean enrichment factors and differential functions of REE suggest that the material sources of this area are still associated with the Huanghe matter.