Crustal evolution of the North Qinling terrain of the Qinling Orogen, China: Evidence from detrital zircon U-Pb ages and Hf isotopic composition
Crustal evolution of the North Qinling terrain of the Qinling Orogen, China: Evidence from detrital zircon U-Pb ages and Hf isotopic composition
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中国秦岭造山带北秦岭地壳演化：来自碎屑锆石U-Pb年龄和Hf同位素组成的证据
DOI：
10.1016/j.gr.2010.12.009
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发表时间：
2011-07
影响因子：
6.1
通讯作者：
Zhai, Ming-Guo
中科院分区：
文献类型：
--
作者：
Zhu, Xi-Yan;Chen, Fukun;Li, Shuang-Qing;Yang, Yi-Zeng;Nie, Hu;Siebel, Wolfgang;Zhai, Ming-Guo
The North Qinling terrain reveals a different geological history from the North China block to the north and the South Qinling micro-continental block to the south. The timing of events and geochemical features of the North Qinling terrain are essential for understanding the evolution of the Qinling orogenic belt that joins the North and South China blocks. This study presents detrital zircon ages and Hf isotopic compositions from the Guandaokou Group, a cover sequence of the North China block, and from the Kuanping Group, an upper basement sequence of the North Qinling terrain. The youngest detrital zircon U–Pb ages constrain the initiation of sedimentation in the Guandaokou Group to 1.85Ga and the maximum depositional age of the Kuanping Group to ~640Ma. Zircon U–Pb ages and Hf data testify to a major phase of magmatism in the North Qinling terrain at ~1000–900Ma. The magmatic rocks were largely produced from reworking of early Paleoproterozoic (~2.5–2.0Ga) crust with minor contribution of late Paleoproterozoic (~1.7Ga) juvenile material. This age record differs in time from the two important thermal events of ~1.85Ga and ~2.5Ga, widely manifested in the North China block. The North Qinling terrain can thus be regarded as a separate micro-continent with a pre-Neoproterozoic evolution different from that of the North China block. The final assembly of the North Qinling terrain to the North China block took place after about 640Ma.
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影响因子：
3
作者：
Zhen Yan;Zong-qi Wang;Junlu Chen;Q. Yan;Tao Wang
通讯作者：
Zhen Yan;Zong-qi Wang;Junlu Chen;Q. Yan;Tao Wang
影响因子：
2.7
作者：
F. Xue;A. Kröner;T. Reischmann;F. Lerch
通讯作者：
F. Xue;A. Kröner;T. Reischmann;F. Lerch
影响因子：
3.8
作者：
Jian‐Bo Zhou;S. Wilde;Guochun Zhao;Changqing Zheng;W. Jin;Xingzhou Zhang;Hongjiang Cheng
通讯作者：
Jian‐Bo Zhou;S. Wilde;Guochun Zhao;Changqing Zheng;W. Jin;Xingzhou Zhang;Hongjiang Cheng
华北克拉通晚古元古代基性岩脉群构造环境的地球化学约束
影响因子：
6.1
作者：
Hou, Guiting, Li,J.H, Yang,M.H.,Yao,W.H., Wang,C.C
通讯作者：
Hou, Guiting, Li,J.H, Yang,M.H.,Yao,W.H., Wang,C.C
影响因子：
1.8
作者：
B. Hu;M. Zhai;Jh Guo;P. Peng;F. Liu;S. Liu
通讯作者：
B. Hu;M. Zhai;Jh Guo;P. Peng;F. Liu;S. Liu