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通过对分布于羌塘地块上茶布-查桑一带变质岩系的岩石组合、变质砾岩物源分析、变质变形特征和单颗粒锆石~(207)Pb/~(206)Pb年龄的综合研究表明,除其中的硅质岩段属于三叠系外、它的主体属于中元古界变质基底.基底地层分别为果干加年日群和戈木日群,它们具有不同的变质变形历史.单颗粒锆石~(207)Pb/~(206)Pb年龄指示出研究区附近可能存在太古代陆核的新线索,在戈木日群中发现有1016～929和548～509 Ma的热事件年龄.
Based on the rock assemblages of the metamorphic rocks in the Chabu-Chazhan area of the Qiangtang block, the provenances of the metamorphic conglomerates, the metamorphism and the characteristics of single-particle zircon ~ (207) Pb / ~ (206) Pb ages The comprehensive study shows that except for the siliceous rocks belonging to the Triassic, the main part belongs to the metamorphic basement of Mesoproterozoic, and the basement strata are the dried fruit plus annual and Golmud populations, respectively, which have different metamorphism (207) Pb / ~ (206) Pb ages indicate that there may be some new clues of Archean continental nuclei in the study area, and 1016 ~ 929 and 548 ~ 509 Ma Hot event age.