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Speleothem annual layers revealed by seasonal SIMS delta O-18 measurements

文献类型：期刊论文

作者Liu Yuhui1,2; Tang GuoQiang3; Ling XiaoXiao3; Hu ChaoYong1; Li XianHua3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2015-10-01
卷号58期号:10页码:1741-1747
关键词SIMS delta O-18 annual cycles speleothem time series
DOI10.1007/s11430-015-5114-6
文献子类Article
英文摘要In-situ seasonal delta O-18 measurements of section 236.3-235.6 cm of speleothem HS4, from Qingjiang Valley of the Middle reaches of Yangtze River, China, were performed by an Secondary Ionization Mass Spectrometry (SIMS) with Oka (Chinese primary calcite standard GBW04481) and UWC-3 (international calcite standard from University of Wisconsin). The potential of using SIMS delta O-18 measurements to establish speleothem time series has been explored and the differences between conventional and SIMS delta O-18 values have been discussed. During a 3-day period, UWC-3 delta O-18 has been measured on Cameca IMS 1280 Ion Microprobe Mass Spectrometer against "Oka" external standard. The measured mean value of UWC-3 (delta O-18(VPDB)= -17.85aEuro degrees +/- 0.22aEuro degrees, 1SD) matches well with its recommended value (delta O-18(VPDB)=-17.83aEuro degrees +/- 0.08aEuro degrees), suggesting that the instrument was stable. The same method applied on HS4 produced delta O-18 measurements at seasonal resolution with distinct annual cycles and the total cycle number in agreement with that from Mg/Ca cycles and lamination layer counting of the same section, so it offers an alternative for accessing speleothem time series. However, compared with conventional delta O-18 values of HS4, SIMS delta O-18 values are more negative by 0.90aEuro degrees with larger seasonal variation. The main reasons might come from the micro-cracks, micro-pores or liquid inclusions existing in HS4, and organic materials in the speleothem might be another factor affecting the SIMS delta O-18 values, indicating that to obtain reliable speleothem SIMS delta O-18 values, both compaction and purity of samples are crucial.
WOS关键词HOLOCENE ASIAN MONSOON ; NORTH-ATLANTIC CLIMATE ; ENVIRONMENTAL CONTROLS ; ION-MICROPROBE ; TRACE-ELEMENT ; CENTRAL CHINA ; HESHANG CAVE ; SOREQ CAVE ; STALAGMITE ; SIGNALS
WOS研究方向Geology
语种英语
WOS记录号WOS:000362336700006
资助机构State Key Laboratory of Geological Processes and Mineral Resources(GPMR201201) ; State Key Laboratory of Geological Processes and Mineral Resources(GPMR201201) ; National Natural Science Foundation of China(41371216) ; National Natural Science Foundation of China(41371216) ; State Key Laboratory of Geological Processes and Mineral Resources(GPMR201201) ; State Key Laboratory of Geological Processes and Mineral Resources(GPMR201201) ; National Natural Science Foundation of China(41371216) ; National Natural Science Foundation of China(41371216)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62229]  
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.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
2.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu Yuhui,Tang GuoQiang,Ling XiaoXiao,et al. Speleothem annual layers revealed by seasonal SIMS delta O-18 measurements[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(10):1741-1747.
APA Liu Yuhui,Tang GuoQiang,Ling XiaoXiao,Hu ChaoYong,&Li XianHua.(2015).Speleothem annual layers revealed by seasonal SIMS delta O-18 measurements.SCIENCE CHINA-EARTH SCIENCES,58(10),1741-1747.
MLA Liu Yuhui,et al."Speleothem annual layers revealed by seasonal SIMS delta O-18 measurements".SCIENCE CHINA-EARTH SCIENCES 58.10(2015):1741-1747.

入库方式： OAI收割

来源：地质与地球物理研究所

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