Activation of northern margin of the North China Craton in Late Paleozoic: Evidence from U-Pb dating and Hf isotopes of detrital zircons from the Upper Carboniferous Taiyuan Formation in the Ningwu-Jingle basin
Activation of northern margin of the North China Craton in Late Paleozoic: Evidence from U-Pb dating and Hf isotopes of detrital zircons from the Upper Carboniferous Taiyuan Formation in the Ningwu-Jingle basin
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华北克拉通北缘晚古生代活化——来自宁武-静乐盆地上石炭统太原组碎屑锆石U-Pb测年和Hf同位素的证据
DOI：
10.1007/s11434-008-0444-9
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发表时间：
2009-02
期刊：
影响因子：
--
通讯作者：
Yan Bin
中科院分区：
文献类型：
--
作者：
Luo ZhenYu;He Bin;Huang XiaoLong;Li HongYan;Xu YiGang;Yan Bin
对宁武-静乐盆地上石炭统太原组（N-8）碎屑锆石进行了LA-MC-ICPMS U-Pb定年。72个碎屑锆石颗粒的年龄可分为3组：303-320 Ma（6粒），1631-2194 Ma（37粒，峰值在1850 Ma），2318-2646 Ma（29粒，峰值在2500 Ma）。第2组和第3组碎屑锆石可能来自北CC基底。第1群锆石176 Hf/177 Hf比值为0.281725 ~ 0.282239，对应的负Hf（t）值为−12.4 ~ −30.3，旧Hf模式年龄为1.4- 2.2Ga。这些特征与华北克拉通北方边缘内蒙古古隆起石炭纪岩浆锆石的特征相似，但与兴蒙造山带的差异较大，表明太原组的物源部分来自内蒙古古隆起。第1组碎屑锆石Th/U比值均较高（> 0.67），表明其为岩浆成因。两个最年轻的颗粒的平均年龄（304 ± 6 Ma）与太原组的沉积年龄相近，表明IMPU在晚石炭世曾经历过强烈的构造抬升和岩浆作用。为华北克拉通北方边缘晚古生代的活化提供了重要的地质证据。
LA-MC-ICPMS U-Pb dating has been performed on detrital zircons from the Upper Carboniferous Tai-yuan Formation (N-8) in the Ningwu-Jingle Basin, west of the North China Craton (NCC). The ages of 72 detrital zircon grains are divided into three groups: 303–320 Ma (6 grains), 1631–2194 Ma (37 grains, peaked at 1850 Ma), 2318–2646 Ma (29 grains, peaked at 2500 Ma). Detrital zircons of Group 2 and Group 3 were likely derived from the basement of the NCC. Group 1 zircons exhibit176Hf/177Hf ratios ranging from 0.281725 to 0.282239, with corresponding negativeɛHf(t) values of −12.4–−30.3 and old Hf model ages of 1.4–2.2 Ga. These characteristics show a strong resemblance to those of Carboniferous igneous zircons from the Inner Mongolia Paleo-uplift (IMPU) on the northern margin of the NCC, but differ significantly from those of the Xing-Meng Orogenic Belt, suggesting that the source of the Taiyuan Formation partly came from the IMPU. All detrital zircons of Group 1 have relatively high Th/U ratios (> 0.67), indicating a magmatic origin. The mean age (304 ± 6 Ma) of the two youngest grains is close to the depositional age of the Taiyuan Formation, suggesting a strong tectonic uplift and magmatism in the IMPU during the Late Carboniferous. This paper provides important geological evidence for the activation of the northern margin of the NCC in the Late Paleozoic.
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影响因子：
5.3
作者：
He, B;Xu, YG;Wang, Y
通讯作者：
Wang, Y
影响因子：
--
作者：
M. Lerch;F. Xue;A. Kröner;W. Todt
通讯作者：
M. Lerch;F. Xue;A. Kröner;W. Todt
影响因子：
5.8
作者：
Daniel C. Pope;S. Willett
通讯作者：
Daniel C. Pope;S. Willett
DOI：
10.1016/s1464-1895(01)00117-x
发表时间：
2001
期刊：
Physics and Chemistry of The Earth Part A-solid Earth and Geodesy
影响因子：
--
作者：
Shuguang Li;F. Huang;Y. Nie;W. Han;G. Long;Hm Li;S.-Q. Zhang;Z. Zhang
通讯作者：
Shuguang Li;F. Huang;Y. Nie;W. Han;G. Long;Hm Li;S.-Q. Zhang;Z. Zhang
影响因子：
5.3
作者：
Bruguier, O;Lancelot, JR;Malavieille, J
通讯作者：
Malavieille, J