Detrital zircon U-Pb ages of the Machollyong Group in Korean Peninsula: Regional correlation and tectonic implications

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

	Detrital zircon U-Pb ages of the Machollyong Group in Korean Peninsula: Regional correlation and tectonic implications
	Liao Xin 1,2; Zhang XiaoHui 1; Kim, SungHyon 3; Park, Ung 3; Jong, Cholsu 3
刊名	ACTA PETROLOGICA SINICA
	2016
卷号	32 期号:10 页码:2981-2992
关键词	Detrital zircons U-Pb geochronology Tectonic affinity Machollyong Group Korean Peninsula
文献子类	Article
英文摘要	The meta-sedimentary successions in the intra-cratonic mobile belts encapsulate essential information for deciphering the convergent and divergent geodynamic processes of constituent terranes during the construction of early supercontinents. The detrital zircon geochronology presents a key to probing it. With a view to bridging the gap in the characterization of massive meta-sedimentary successions in the most representative Paleoproterozoic mobile belts (i. e., the Liao-Ji-Korea mobile belt) in the North China Craton, this study carried out a detrital zircon SIMS U-Pb dating on the Machollyong Group at Komdok, Korean Peninsula. Zircons from one meta-pyroclastic sample of the Puktaechon formation yielded a dominant peak age of ca. 2. 53Ga and a youngest peak age of ca. 2. 19Ga, constraining their formation time to later than 2. 2Ga. Detrital zircons from one meta-sedimentary sample of the Namdaechon formation yielded a dominant peak age span from 2. 02 to 2. 18Ga, a subordinate peak age of ca. 2. 46Ga and a few older ages from 2. 78 to 3. 30Ga, reflecting dual provenances of the Paleoproterozoic plutons in the Rangnim Massif and the Neoarchean and Mesoarchean crusts in the neighboring terranes. The youngest detrital age constrains the maximum deposition time of the Namdaechon formation at ca. 2. 02Ga. Regional comparison suggests that the Machollyong Group shows consistent detrital zircon age spectra with the Liaohe Group and Ji' an/Laoling groups in the Liao-Ji mobile belt. Such consistency indicates their synchronization in deposition and similarity in provenance. These coeval and consanguineous litho-stratigraphic sequences can provide insightful reference for calibrating the tectonic affinity in the Liao-Ji and Korea mobile belt during the Paleoproterozoic. The dominance of detrital zircons with ages close to the depositional age is characteristic of various basins on convergent plate margins, but inconsistent with rift basins commonly featuring much older detrital zircons than the depositional age.
WOS关键词	NORTH CHINA CRATON ; LIAO-JI BELT ; EASTERN BLOCK ; CRUSTAL EVOLUTION ; TRACE-ELEMENT ; KEY ISSUES ; LU-HF ; CONSTRAINTS ; GEOCHRONOLOGY ; GEOCHEMISTRY
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000388277000006
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53256]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100039, Peoples R China 3.State Acad Sci, Inst Geol, Pyongyang 3812100, North Korea
推荐引用方式 GB/T 7714	Liao Xin,Zhang XiaoHui,Kim, SungHyon,et al. Detrital zircon U-Pb ages of the Machollyong Group in Korean Peninsula: Regional correlation and tectonic implications[J]. ACTA PETROLOGICA SINICA,2016,32(10):2981-2992.
APA	Liao Xin,Zhang XiaoHui,Kim, SungHyon,Park, Ung,&Jong, Cholsu.(2016).Detrital zircon U-Pb ages of the Machollyong Group in Korean Peninsula: Regional correlation and tectonic implications.ACTA PETROLOGICA SINICA,32(10),2981-2992.
MLA	Liao Xin,et al."Detrital zircon U-Pb ages of the Machollyong Group in Korean Peninsula: Regional correlation and tectonic implications".ACTA PETROLOGICA SINICA 32.10(2016):2981-2992.