论文部分内容阅读
二端员物质的混合过程在自然界普遍发生。放射性成因的 Ｓｒ， Ｎｄ 同位素体系因其具有源区示踪和长周期时标特性，在混合物组成端员定量分离和混合机制研究中具有特殊意义。本文较详细地介绍了二端员混合过程形成的混合体中元素组成、 Ｓｒ， Ｎｄ 同位素组成之间的相互关系。在此基础上，介绍了二端员混合过程的 Ｓｒ， Ｎｄ 同位素鉴别准则和混合体中混合比 ｆ 的确定方法。
The mixing process of the two members of the material commonly occurs in nature. The radiogenic Sr and Nd isotope systems are of particular significance in the study of the quantitative separation and mixing mechanism of the mixture end-members because of their source-tracing and long-period time-scale properties. This paper introduces in more detail the relationship between elemental composition, Sr and Nd isotopic composition of the mixture formed by the two-terminal mixing process. On this basis, the identification criteria for Sr and Nd isotopes in the two-end mixing process and the determination of mixing ratio f in the mixture are introduced.