High spatial resolution in situ U-Pb dating using laser ablation multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS)

doi:10.1039/c6ja00387g

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

	High spatial resolution in situ U-Pb dating using laser ablation multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS)
	Xie, Lie-Wen 1; Yang, Jin-Hui 1; Yin, Qing-Zhu 2; Yang, Yue-Heng 1; Liu, Jing-Bo 1; Huang, Chao 1
刊名	JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
	2017-05-01
卷号	32 期号:5 页码:975-986
ISSN号	0267-9477
DOI	10.1039/c6ja00387g
文献子类	Article
英文摘要	Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a powerful micro-analytical tool that has been widely used in geoscience because of its ability to rapidly and precisely analyze isotopes in situ with a typical spatial resolution of 30-80 microns. Here we present a new method for U-Pb dating of zircon with a higher spatial resolution at a scale of 5.8-7.4 mu m in diameter and < 3 mu m in sampling depth (< 0.5 ng of zircon material consumption), using a 193 nm ArF excimer laser ablation system coupled with multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS). Ion counters have an obvious advantage when using a small ion beam (< 12.5 mV) and make it possible to date zircons with a 238U signal of < 0.5 mV with improved spatial resolution. The new technique was evaluated by investigating six zircon standards with various known ages ranging from 32 Ma to 2060 Ma. Using this technique, we obtained a precision (2s) for the weighted mean Pb-206/U-238 age within 1% and an accuracy of <1% offset to the nominal reference age. We then further demonstrated the utility and robustness of the new high spatial resolution technique for its application to the real geological problem of complexly zoned zircons, to determine the age of the famous Dabie ultrahigh pressure metamorphism. We anticipate that the method will have a wide range of applications in high-resolution U-Pb dating of tiny or complex zircon grains with small cores or relatively narrow zones, with high efficiency and throughput in the geological research community.
WOS关键词	LU-HF ; ZIRCON GEOCHRONOLOGY ; ULTRAHIGH-PRESSURE ; BADDELEYITE ZRO2 ; TRACE-ELEMENT ; ISOTOPES ; SYSTEMATICS ; PRECISION ; CHINA ; AGE
WOS研究方向	Chemistry ; Spectroscopy
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000401119500008
资助机构	National Science Foundation of China(41473012 ; 41490631 ; 20141015 ; 41521062 ; 41403002 ; 41525012) ; National Science Foundation of China(41473012 ; 41490631 ; 20141015 ; 41521062 ; 41403002 ; 41525012) ; National Science Foundation of China(41473012 ; 41490631 ; 20141015 ; 41521062 ; 41403002 ; 41525012) ; National Science Foundation of China(41473012 ; 41490631 ; 20141015 ; 41521062 ; 41403002 ; 41525012)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52941]
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	Xie, Lie-Wen
作者单位	1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, POB 9825, Beijing 100029, Peoples R China 2.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Xie, Lie-Wen,Yang, Jin-Hui,Yin, Qing-Zhu,et al. High spatial resolution in situ U-Pb dating using laser ablation multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS)[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2017,32(5):975-986.
APA	Xie, Lie-Wen,Yang, Jin-Hui,Yin, Qing-Zhu,Yang, Yue-Heng,Liu, Jing-Bo,&Huang, Chao.(2017).High spatial resolution in situ U-Pb dating using laser ablation multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS).JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,32(5),975-986.
MLA	Xie, Lie-Wen,et al."High spatial resolution in situ U-Pb dating using laser ablation multiple ion counting inductively coupled plasma mass spectrometry (LA-MIC-ICP-MS)".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 32.5(2017):975-986.