Zircon ages, geochemistry and Nd isotopic systematics for the Palaeoproterozoic 2.3-1.8 Ga Kuilyu Complex, East Kyrgyzstan - The oldest continental basement fragment in the Tianshan orogenic belt

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• 作者：A. Krö ; ner^a ; ^b ; ^{kroener@uni-mainz.de} ; D.V. Alexeiev^c ; V.P. Kovach^d ; Y. Rojas-Agramonte^a ; ^b ; ^e ; A.A. Tretyakov^c ; A.V. Mikolaichuk^f ; H. Xie^a ; E.R. Sobel^g
• 关键词：Kuilyu Complex ; Zircon dating ; Microcontinent ; CAOB ; Middle Tianshan ; Kyrgyzstan
• 刊名：Journal of Asian Earth Sciences
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：135
• 期：Complete
• 页码：122-135
• 全文大小：4174 K
• 卷排序：135

文摘

The Kuilyu Complex represents the oldest continental fragment in the Tianshan orogen. Granite-gneisses of the Kuilyu Complex yielded zircon ages of ca. 2.3 and 1.85 Ga. Nd isotope systematics imply a Neoarchaean ca 2.7 Ga crustal source. The Kuilyu Complex may represent a rifted off fragment of the Tarim Craton.