Sub-micron trace elemental distributions and U-Pb dating of zircon from the oldest rock in the Anshan area, North China Craton

doi:10.1016/j.precamres.2018.12.023

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 > 中国科学院地球与行星物理重点实验室

	Sub-micron trace elemental distributions and U-Pb dating of zircon from the oldest rock in the Anshan area, North China Craton
	Long, Yi-Jie 1,2,3; Yang, Wei 1,3; Lin, Yang-Ting 1,3; Yang, Jin-Hui 3,4; Hao, Jia-Long 1; Zhang, Jian-Chao 1
刊名	PRECAMBRIAN RESEARCH
	2019-03-01
卷号	322 页码:1-17
关键词	Nano-SIMS Micro-scale U-Pb dating 3.8 Ga zircon Archean Anshan Complex
ISSN号	0301-9268
DOI	10.1016/j.precamres.2018.12.023
英文摘要	The formation ages of ancient rocks are controversial because of the co-existence of several generations of zircon within a single sample. This study presents BSE imaging, CL imaging, Raman spectroscopy, NanoSIMS trace element imaging and U-Pb dating measurements of zircon from the trondhjemitic enclave and its host leucosome of the Archean Anshan Complex, which were suggested to be the oldest rock (3.8 Ga) in the North China craton. Unlike previous studies, zircon grains were in situ analyzed in polished thin sections instead of mineral separations from the rocks. Three types of zircon have been identified. All zircon in the leucosome share similar morphology and textural relationships observed within thin sections, marked as type I. Zircon in the trondhjemitic enclave can be divided into two groups, marked as type II and type III zircon, respectively. Type II zircons share similar occurrence, texture and U-Pb ages of Type I. They are euhedral prismatic or rhombus in shape with oscillatory zonings. Type I and II zircon yield weighted mean Pb-207/Pb-206 ages of 3134 +/- 34 Ma (n = 14, MSWD = 6.2) and 3132 +/- 30 Ma (n = 7, MSWD = 2.1), respectively, which can be referred to as formation ages of the leucosome and the trondhjemitic enclave. Type III zircons generally occur with rounded shapes and core-rim textures. The cores yield ages of 3.7-3.8 Ga, while the rims give discordant ages of 3.3-3.2 Ga, indicating that these zircons are inherited with altered narrow rims during the later magmatism. Therefore, 3.7-3.8 Ga cannot represent the formation age of the trondhjemitic enclave. This study demonstrates that in situ measurements of zircon in polished thin sections can preserve the petrographic settings of zircon and provide strict constraints for the zircon formations and hence the host rocks. More ancient rocks with 3.8 Ga zircon from the Archean Anshan Complex should be studied by this method to further clarify whether there is 3.8 Ga rock in the North China craton.
资助项目	Ministry of Science and Technology of People's Republic of China[2016YFE0203000] ; National Science Foundation of China[41521062] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS关键词	SOUTHERN WEST GREENLAND ; ITSAQ GNEISS COMPLEX ; COMBINED ION-MICROPROBE ; EARLY ARCHEAN ROCKS ; EARLY CRUSTAL EVOLUTION ; OXYGEN-ISOTOPE RATIOS ; MA DETRITAL ZIRCONS ; TH-PB ; GA ZIRCONS ; JACK-HILLS
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000458712700001
资助机构	Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; Ministry of Science and Technology of People's Republic of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90680]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Yang, Wei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100099, Peoples R China 3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Long, Yi-Jie,Yang, Wei,Lin, Yang-Ting,et al. Sub-micron trace elemental distributions and U-Pb dating of zircon from the oldest rock in the Anshan area, North China Craton[J]. PRECAMBRIAN RESEARCH,2019,322:1-17.
APA	Long, Yi-Jie,Yang, Wei,Lin, Yang-Ting,Yang, Jin-Hui,Hao, Jia-Long,&Zhang, Jian-Chao.(2019).Sub-micron trace elemental distributions and U-Pb dating of zircon from the oldest rock in the Anshan area, North China Craton.PRECAMBRIAN RESEARCH,322,1-17.
MLA	Long, Yi-Jie,et al."Sub-micron trace elemental distributions and U-Pb dating of zircon from the oldest rock in the Anshan area, North China Craton".PRECAMBRIAN RESEARCH 322(2019):1-17.