本文分为两个部分:一、微量元素的多元统计分析;二、某些微量元素的分布特征。 一、微量元素的多元统计分析 我们根据西藏南部花岗岩类岩石的化学分析结果,进行了多元统计分析。参加计算的样品共94个,以29个元素(除12个主元素外尚有RE_2O_3、Nb_2O_5、Ta_2O_5、Li_2O、Rb_O、U、Th、Be、Sr、Ba、Cu、Pb、V、Cr、Zr、Co和Ga 17个微量元素)为变量,其样品的分配情况见表1。 This article is divided into two parts: First, the multivariate statistical analysis of trace elements; Second, the distribution of some trace elements. 1. Multivariate Statistical Analysis of Trace Elements Multivariate statistical analysis has been carried out based on the chemical analysis results of granitic rocks in southern Tibet. There are 94 samples with 29 elements (RE_2O_3, Nb_2O_5, Ta_2O_5, Li_2O, Rb_O, U, Th, Be, Sr, Ba, Cu, Pb, V, Cr and Zr besides 12 main elements , Co and Ga 17 trace elements) as variables, the distribution of the sample in Table 1.