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新疆萨吾尔山存在两期不同成因的花岗岩类，其 Ｒｂ － Ｓｒ 同位素年龄值分别为３１４ ．９ ～３２０ ．３ Ｍａ 和２９５ ～２９６ Ｍａ 。结合其侵位的地层及其与火山岩的关系等确定这两种不同类型花岗岩的时代分别为海西中期和晚期。
There are two different types of granitic rocks in the Xinjiang Uighur region, with Rb - Sr isotopic ages of 314. 9 ~ 320. 3 Ma and 295 ~ 296 Ma. Combined with the emplacement of the strata and their relationship with the volcanic rock to determine the two different types of granite era were Hercynian mid-and late.