Zircon U–Pb geochronology and Hf isotope analyses of the Wulian complex in the Sulu orogenic belt, eastern China: tectonic affinity and implications for early Precambrian crustal growth and recycling in the South China Craton
Zircon U–Pb geochronology and Hf isotope analyses of the Wulian complex in the Sulu orogenic belt, eastern China: tectonic affinity and implications for early Precambrian crustal growth and recycling in the South China Craton
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中国东部苏鲁造山带五莲杂岩的锆石U-Pb年代学和Hf同位素分析：构造亲和性及其对华南克拉通早前寒武纪地壳生长和再循环的意义
DOI：
10.1017/s0016756820000485
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发表时间：
2020-06
影响因子：
2.3
通讯作者：
Wang xiangjian
中科院分区：
文献类型：
--
作者：
Liu Jianhui;Liu Fulai;Ding Zhengjiang;Yang Hong;Liu Pinghua;Liu Lishuang;chen Hui;Wang xiangjian
五联杂岩体位于苏鲁造山带北缘，北起华北克拉通（NCC），南起华南克拉通（SCC）。由变质沉积五联群、片麻质花岗岩和变质闪长岩组成。五莲群碎屑锆石的U-Pb分析结果显示，主要年龄群为2600 ~ 2400 Ma（峰值在c. 2.5 Ga），其次年龄群为bbb3000、3000 ~ 2800、2800 ~ 2600、2200 ~ 2000、1900 ~ 1800、1500 ~ 1300和1250 ~ 950 Ma；部分变质锆石的变质年龄为2.7 Ga、2.55 ~ 2.45 Ga、2.1 ~ 2.0 Ga和1.95 ~ 1.80 Ga，与SCC的岩浆变质事件一致。此外，五联群在约0.76 Ga时被片麻质花岗岩和变闪长岩侵入，它们分别源于太古宙大陆地壳的部分熔融作用和太古宙地幔的部分熔融作用。因此，五联群与上第三系有构造亲缘关系，主要产自上第三系。碎屑锆石具有正、负ϵHf(t)值，表明烃源岩既有古壳岩的改造，也有古壳岩的改造。早前寒武纪地壳生长主要发生在c. 3.4 ~ 2.5 Ga，以2.96 Ga为主导峰，3.27、2.74和2.52 Ga为次峰。最古老的两颗锆石年龄分别为3307和3347 Ma，记录了古大陆地壳（> 3.35 Ga）的再循环和c 3.95 Ga之前的地壳生长。
Abstract The Wulian complex is located on the northern margin of the Sulu orogenic belt, and was formed by collision between the North China Craton (NCC) to the north and South China Craton (SCC) to the south. It consists of the metasedimentary Wulian Group, gneissic granite and meta-diorite. The U–Pb analyses for the detrital zircons from the Wulian Group exhibit one predominant age population of 2600–2400 Ma with a peak at c. 2.5 Ga and several secondary age populations of > 3000, 3000–2800, 2800–2600, 2200–2000, 1900–1800, 1500–1300 and 1250–950 Ma; some metamorphic zircons have metamorphic ages of c. 2.7, 2.55–2.45, 2.1–2.0 and 1.95–1.80 Ga, which are consistent with magmatic-metamorphic events in the SCC. Additionally, the Wulian Group was intruded by the gneissic granite and meta-diorite at c. 0.76 Ga, attributed to Neoproterozoic syn-rifting bimodal magmatic activity in the SCC and derived from partial melting of Archaean continental crust and depleted mantle, respectively. The Wulian Group therefore has tectonic affinity to the SCC and was mainly sourced from the SCC. The detrital zircons have positive and negative ϵHf(t) values, indicating that their source rocks were derived from reworking of both ancient and juvenile crustal rocks. The major early Precambrian crustal growth took place during c. 3.4–2.5 Ga with a dominant peak at 2.96 Ga and several secondary peaks at 3.27, 2.74 and 2.52 Ga. The two oldest zircons with ages of 3307 and 3347 Ma record the recycling of ancient continental crust (> 3.35 Ga) and crustal growth prior to c. 3.95 Ga in the SCC.
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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
影响因子：
3.8
作者：
Sheng‐yao Yu;Jianxin Zhang;San-zhong Li;Deyou Sun;Yunshuai Li;Xin Liu;Ling‐li Guo;Y. Suo
通讯作者：
Sheng‐yao Yu;Jianxin Zhang;San-zhong Li;Deyou Sun;Yunshuai Li;Xin Liu;Ling‐li Guo;Y. Suo
DOI：
10.1353/book.3378
发表时间：
1884-07
期刊：
Edinburgh Medical Journal
影响因子：
--
作者：
A. Dickson
通讯作者：
A. Dickson
影响因子：
--
作者：
Chuan-heng Zhang;Linzhi Gao;Zhenjie Wu;Xiaoying Shi;Q. Yan;Dajian Li
通讯作者：
Chuan-heng Zhang;Linzhi Gao;Zhenjie Wu;Xiaoying Shi;Q. Yan;Dajian Li
影响因子：
6.1
作者：
Guochun Zhao;M. Zhai
通讯作者：
Guochun Zhao;M. Zhai