2.9 Ga magmatism in Eastern Hebei, North China Craton

doi:10.1016/j.precamres.2017.11.002

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

	2.9 Ga magmatism in Eastern Hebei, North China Craton
	Liou, Peng 1,2; Guo, Jinghui 1; Huang, Guangyu 1,2; Fan, Wenbo 1,2
刊名	PRECAMBRIAN RESEARCH
	2019-06-15
卷号	326 页码:6-23
关键词	Mesoarchean 2.9 Ga magmatism Eastern Hebei North China Craton Zircon dating Hf isotope
ISSN号	0301-9268
DOI	10.1016/j.precamres.2017.11.002
英文摘要	We report the results of a comprehensive isotopic investigation of zircons from metamorphosed orthogneisses from Caochang village in the Zunhua Complex, Eastern Hebei, North China Craton (NCC). A detailed investigation of the internal structures of these zircons combined with SIMS U-Pb and ICP-MS Lu-Hf zircon analyses, as well as a whole-rock geochemical study, revealed a previously unknown similar to 2.9 Ga magmatic event in Eastern Hebei. The identified Mesoarchean gneisses are mainly felsic gneisses and amphibolites. Amphibolites with positive epsilon Nd(t) values were derived from the depleted mantle, with some crustal contamination during ascent. Zircon Hf isotopes indicate that the high-silica gneisses originate from the high-temperature mixing of mafic magma derived from a depleted mantle source and the subsequent felsic magma derived from the melting of ancient crustal materials, with the subsequent high degree fractional crystallization of the parental magma. Some of the 2.9 Ga felsic gneisses may record an anatectic event at 2.5 Ga. The widespread ancient inherited and detrital zircons (> 2.6 Ga) and the existence of Mesoarchean rocks imply a possible ancient continent in Eastern Hebei. It may also imply that the Mesoarchean era (especially at 2.9 Ga) represents another important magmatic event in the eastern block of the NCC. The identification of 2.9 Ga rocks indicates that the magmatic history of Eastern Hebei is far more complex than previously thought.
资助项目	National Natural Science Foundation of China[41672190] ; Chinese Academy of Sciences[XDB18030205] ; Chinese Academy of Sciences[QYZDY-SSW-DQC017]
WOS关键词	HF ISOTOPE COMPOSITION ; COMBINED U-PB ; LU-HF ; NEOARCHEAN SUBDUCTION ; CRUSTAL EVOLUTION ; ROCK SERIES ; PRECAMBRIAN BASEMENT ; SHRIMP GEOCHRONOLOGY ; GEOLOGICAL SAMPLES ; ANSHAN AREA
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000469157300002
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/92249]
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	Guo, Jinghui
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, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liou, Peng,Guo, Jinghui,Huang, Guangyu,et al. 2.9 Ga magmatism in Eastern Hebei, North China Craton[J]. PRECAMBRIAN RESEARCH,2019,326:6-23.
APA	Liou, Peng,Guo, Jinghui,Huang, Guangyu,&Fan, Wenbo.(2019).2.9 Ga magmatism in Eastern Hebei, North China Craton.PRECAMBRIAN RESEARCH,326,6-23.
MLA	Liou, Peng,et al."2.9 Ga magmatism in Eastern Hebei, North China Craton".PRECAMBRIAN RESEARCH 326(2019):6-23.