In situ U-Pb zircon dating of Devonian sandstones and Paleoproterozoic gneissic granites in the Imjingang Belt: Tectonic implications for the Korean Peninsula and North China

doi:10.1016/j.lithos.2018.06.028

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	In situ U-Pb zircon dating of Devonian sandstones and Paleoproterozoic gneissic granites in the Imjingang Belt: Tectonic implications for the Korean Peninsula and North China
	Zhang, Yanbin 1; Hu, Bo 2; Zhai, Mingguo 1,3; Wu, Fuyuan 1,3; Hou, Quanlin 3; Peng, Peng 1; Zhang, Xiaohui 1; Li, Qiuli 1
刊名	LITHOS
	2018-09-01
卷号	316 页码:232-242
关键词	Korean Peninsula Imjingang Belt Devonian Detrital zircon U-Pb dating
ISSN号	0024-4937
DOI	10.1016/j.lithos.2018.06.028
英文摘要	The Imjingang Belt in the Korean Peninsula (KP) attracts much attention because of its critical position in determining the tectonic affiliation of the peninsula. The key to clarifying current controversy lies in the understudied Archaean-Proterozoic basement rocks and Devonian- Carboniferous sedimentary series (i.e.,Imjin Group) in the North Korean part of the belt. In this study, we present geochronological study on magmatic zircons in three Paleoproterozoic gneissic granites and detrital zircons in four clastic rocks of the Imjin Group. SIMS U-Pb zircon analyses on the former reveal that three gneissic granites formed at 1884 +/- 10 Ma, 1875 +/- 10 Ma and 1885 +/- 10 Ma, respectively. They are reminiscent of similarly aged granitic magmatism from the North China Craton (NCC) and in the Nangrim, Gyeonggi and Yeongnam massifs of the KP, thus defining a consistent Paleoproterozoic granitic magmatic event across the NCC and the KP. Detrital zircons from the Puap Formation of the Imjin Group yield age populations of 2.5-23 Ga (similar to 19%), 2.1-1.5 Ga (similar to 15%), 1424-1176 Ma (similar to 9%), 1108-676 Ma (similar to 31%) and 591-388 Ma (similar to 26%). The youngest group gives a weighted mean Pb-206/U-238 age of 401 +/- 3 Ma (n = 15), confirming a depositional age of younger than 400 Ma for the Puap Formation. Together with typical Middle Devonian Givetian and Upper Devonian Famennian standard fossil assemblage in the formation, we constrain the formation to be of Late Devonian. The Puap and Misan formations in the Imjingang Belt show consistent detrital zircon age spectra with those of representative Paleozoic sequences in the Pyongnam and Taebaeksan basins of the KP and the Paleozoic basins in the NCC, implying that the NCC and KP might share congruous tectonic history in the Paleozoic. This can lead to further inferences that the Nangrim and Gyeonggi massifs were connected at least before Late Devonian and that the Imjingang Belt might not be the eastward extension of the Qinling-Dabie-Sulu collisional belt. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	Chinese State Key Research and Development Program[2016YFE0203000] ; National Scientific Foundation of China[41573048] ; National Scientific Foundation of China[41530208]
WOS关键词	ASIAN OROGENIC BELT ; SOUTH-KOREA ; INNER-MONGOLIA ; HF ISOTOPE ; DETRITAL ZIRCONS ; GYEONGGI MASSIF ; SEDIMENTARY-ROCKS ; COLLISION BELT ; PYONGNAM BASIN ; THRUST BELT
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000445992500015
资助机构	Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Scientific Foundation of China ; National Scientific Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Scientific Foundation of China ; National Scientific Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Scientific Foundation of China ; National Scientific Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Scientific Foundation of China ; National Scientific Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/89222]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Zhang, Yanbin
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, POB 9825, Beijing 100029, Peoples R China 2.Changan Univ, Key Lab Western Chinas Mineral Resources & Geol E, Minist Educ, Xian 710054, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yanbin,Hu, Bo,Zhai, Mingguo,et al. In situ U-Pb zircon dating of Devonian sandstones and Paleoproterozoic gneissic granites in the Imjingang Belt: Tectonic implications for the Korean Peninsula and North China[J]. LITHOS,2018,316:232-242.
APA	Zhang, Yanbin.,Hu, Bo.,Zhai, Mingguo.,Wu, Fuyuan.,Hou, Quanlin.,...&Li, Qiuli.(2018).In situ U-Pb zircon dating of Devonian sandstones and Paleoproterozoic gneissic granites in the Imjingang Belt: Tectonic implications for the Korean Peninsula and North China.LITHOS,316,232-242.
MLA	Zhang, Yanbin,et al."In situ U-Pb zircon dating of Devonian sandstones and Paleoproterozoic gneissic granites in the Imjingang Belt: Tectonic implications for the Korean Peninsula and North China".LITHOS 316(2018):232-242.