Application of XRF Scanning to Different Geological Archives

doi:10.1029/2020EA001589

	Application of XRF Scanning to Different Geological Archives
	Guo, Fei 1,2; Clemens, Steven 3; Liu, Xingxing 1,4; Long, Yili 1,2; Li, Dong 1,2; Tan, Liangcheng 1,4,5; Liu, Chengcheng 1,2; Yan, Hong 1,4,5; Sun, Youbin 1,4,5
刊名	EARTH AND SPACE SCIENCE
	2021-09-01
卷号	8 期号:9 页码:20
关键词	XRF scanning analytical method loess stalagmite tridacna paleoclimate
DOI	10.1029/2020EA001589
通讯作者	Guo, Fei(guofei@ieecas.cn) ; Sun, Youbin(sunyb@ieecas.cn)
英文摘要	High-resolution XRF scanning is widely used on marine and lake sediment cores as a means of rapidly acquiring elemental concentrations from closely spaced intervals with no damage to the samples. Therefore, guidance on how to obtain reliable datasets and select suitable step sizes for different geological media are of great importance. Here we apply this efficient analytical method to loess, stalagmite, and tridacna samples. The results show that 11 elements (Al, Si, K, Ca, Ti, Mn, Fe, Rb, Sr, Zr, and Ba), eight elements (Ca, Si, K, Fe, Cu, Ni, Sc, and Sr) and seven elements (Ca, Sr, Cu, Fe, Sc, Ni, and Si) can be robustly detected by this method for loess, stalagmite and tridacna archives respectively, demonstrating the capacity to reconstruct high-resolution paleoclimate changes. For loess cores, efficiency emission decay of the X-ray tube, water content, matrix, and grain size effects are the main factors influencing elemental intensities. The efficiency emission decay of the X-ray tube, scanning path, scanning interval, and radiation area have a significant effect on element intensities of stalagmite and tridacna samples. Based on our investigations, we suggest optimal resolutions for scanning these three archives for millennial to seasonal-scale paleoclimatic reconstructions. We compare our analyses with existing results from traditional (discrete) analyses, demonstrating similar scales of variability. Our results suggest that geochemical proxies measured by XRF scanning, such as Rb/Sr, Zr/Rb, and Ca/Ti ratios of loess and the Sr/Ca ratio of speleothem and tridacna, can be effectively used to reconstruct high-resolution paleoclimate changes.
资助项目	National Natural Science Foundation of China[41525008] ; National Key Research and Development Program of China[2016YFA0601902] ; State Key Laboratory of Loess and Quaternary Geology, IEECAS[SKLLQG1808]
WOS关键词	INTERTROPICAL CONVERGENCE ZONE ; TRACE-ELEMENT ; TRIDACNA-GIGAS ; REEF ENVIRONMENT ; STABLE-ISOTOPES ; NORTH-ATLANTIC ; STORM SURGES ; GIANT CLAMS ; RESOLUTION ; SPELEOTHEMS
WOS研究方向	Astronomy & Astrophysics ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000702253100009
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; State Key Laboratory of Loess and Quaternary Geology, IEECAS
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17058]
专题	地球环境研究所_古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Guo, Fei; Sun, Youbin
作者单位	1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA 4.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Guo, Fei,Clemens, Steven,Liu, Xingxing,et al. Application of XRF Scanning to Different Geological Archives[J]. EARTH AND SPACE SCIENCE,2021,8(9):20.
APA	Guo, Fei.,Clemens, Steven.,Liu, Xingxing.,Long, Yili.,Li, Dong.,...&Sun, Youbin.(2021).Application of XRF Scanning to Different Geological Archives.EARTH AND SPACE SCIENCE,8(9),20.
MLA	Guo, Fei,et al."Application of XRF Scanning to Different Geological Archives".EARTH AND SPACE SCIENCE 8.9(2021):20.