Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton

doi:10.1111/ggr.12210

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

	Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton
	Xu, Lei 1; Yang, Jinhui 2; Ni, Qian 1; Yang, Yueheng 2; Hu, Zhaochu 1; Liu, Yongsheng 1; Wu, Yuanbao 1; Luo, Tao 1; Hu, Shenghong 1
刊名	GEOSTANDARDS AND GEOANALYTICAL RESEARCH
	2018-09-01
卷号	42 期号:3 页码:379-394
关键词	Sm-Nd isotopes LA-MC-ICP-MS signal improvement geological reference materials Sm-Nd isochron
ISSN号	1639-4488
DOI	10.1111/ggr.12210
英文摘要	In this study, we report both Nd-143/Nd-144 and Sm-147/Nd-144 values in twelve minerals (apatite, titanite, monazite and eudialyte) based on analyses over 4years using LA-MC-ICP-MS. The positive correlation between the measured (Sm) and (Nd) (r(2)=0.9981) over this time in our laboratory demonstrates the excellent long-term stability of the method. Compared with the normal method, Sm and Nd signal intensities were improved by a factor of 2.9 with the use of X skimmer and Jet sample cones in combination with the addition of nitrogen at 3-6mlmin(-1) to the central gas flow. The enhancement of signal intensity benefits the accurate insitu determination of the Sm-Nd isotopes of samples poor in these elements. Nd-143/Nd-144 values were also determined in two manganese nodules and GSMC Co-rich crust with low mass fractions of Nd (94-293gg(-1)). Generally, most of the obtained Sm-Nd isotopic compositions in these geological materials are consistent with published values. External reproducibility' (2s) of Nd-143/Nd-144 and Sm-147/Nd-144 was typically better than 0.06 parts per thousand and 2.5 parts per thousand, respectively, demonstrating that the Durango, Otter Lake, NW-1 and MAD apatites, the Khan, and OLT-1 titanites, MGMH#117531 monazite and LV01 eudialyte are promising candidate reference materials for insitu Sm-Nd isotopic determinations. The Trebilcock, Mae Klang and 44069 monazites are only suitable for insitu Nd isotopic determinations because of their heterogeneous Sm/Nd compositions. The heterogeneous Sm-Nd composition of titanite BLR-1 demonstrates that it is not a suitable reference material for insitu Sm-Nd isotopic determinations. Deep-sea samples (NOD-A-1 and NOD-P-1 manganese nodule, GSMC Co-rich crust) with low mass fractions of Nd also show homogenous Nd isotopic compositions. Sm-Nd isotopic ratios of a monazite (MQG-22) from the North China Craton were measured as a case study and gave a Sm-147-Nd-143 isochron age of 1792 +/- 35Ma (MSWD=3.2) consistent with the published metamorphic age of the host metasedimentary rocks. The results for both candidate reference materials and geological samples demonstrate that the insitu LA-MC-ICP-MS analytical protocol described is feasible and robust for research in geological evolution.
资助项目	Chinese State Key Research and Development Program[2016YFE0203000] ; National Science Fund for Distinguished Young Scholars[41725013] ; National Natural Science Foundation of China[41403017] ; National Natural Science Foundation of China[41573015] ; Science Fund for Distinguished Young Scholars of Hubei Province[2016CFA047] ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources
WOS关键词	PLASMA-MASS SPECTROMETRY ; TH-PB GEOCHRONOLOGY ; U-PB ; PRECISE DETERMINATION ; FISSION-TRACK ; APATITE ; EVOLUTION ; STANDARD ; RATIOS ; SR
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	WILEY
WOS记录号	WOS:000441128500007
资助机构	Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Fund for Distinguished Young Scholars of Hubei Province ; Science Fund for Distinguished Young Scholars of Hubei Province ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Fund for Distinguished Young Scholars of Hubei Province ; Science Fund for Distinguished Young Scholars of Hubei Province ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Fund for Distinguished Young Scholars of Hubei Province ; Science Fund for Distinguished Young Scholars of Hubei Province ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Fund for Distinguished Young Scholars of Hubei Province ; Science Fund for Distinguished Young Scholars of Hubei Province ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88128]
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	Hu, Zhaochu
作者单位	1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China 2.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	Xu, Lei,Yang, Jinhui,Ni, Qian,et al. Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton[J]. GEOSTANDARDS AND GEOANALYTICAL RESEARCH,2018,42(3):379-394.
APA	Xu, Lei.,Yang, Jinhui.,Ni, Qian.,Yang, Yueheng.,Hu, Zhaochu.,...&Hu, Shenghong.(2018).Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton.GEOSTANDARDS AND GEOANALYTICAL RESEARCH,42(3),379-394.
MLA	Xu, Lei,et al."Determination of Sm-Nd Isotopic Compositions in Fifteen Geological Materials Using Laser Ablation MC-ICP-MS and Application to Monazite Geochronology of Metasedimentary Rock in the North China Craton".GEOSTANDARDS AND GEOANALYTICAL RESEARCH 42.3(2018):379-394.