Precambrian basement age and characteristics of Southwestern Tianshan: Zircon U-Pb geochronology and Nd-Sr isotopic compositions
西南天山前寒武纪基底时代和特征：锆石U—Pb年龄和Nd—Sr同位素组成

Keywords: Zircon U,Pb age,Nd,Sr isotope,Granitoid orthogneiss,Southwestern Tianshan
锆石,铀－铅,钕－锶,同位素测定,前寒武纪

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Abstract:

采用锆石U-Pb定年方法，精确测定了西南天山木扎尔特群花岗片麻岩的结晶锆石年龄为（707±13）Ma(MSWD=0.33)。元素地球化学特征和低的ε

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