Application of Avaatech X-ray fluorescence core-scanning in Sr/Ca analysis of speleothems

被引：0
作者：
Dong Li
Liangcheng Tan
Fei Guo
Yanjun Cai
Youbin Sun
Gang Xue
Xing Cheng
Hong Yan
Hai Cheng
R. Lawrence Edwards
Yongli Gao
Jessica Kelley
机构：
[1] Chinese Academy of Sciences,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment
[2] University of Chinese Academy of Sciences,Center for Excellence in Quaternary Science and Global Change
[3] Chinese Academy of Sciences,Institute of Global Environmental Change
[4] Xi’an Jiaotong University,Open Studio for Oceanic
[5] Pilot National Laboratory for Marine Science and Technology,Continental Climate and Environment Changes
[6] University of Minnesota,Department of Earth Sciences
[7] University of Texas at San Antonio,Department of Geological Sciences
来源：
Science China Earth Sciences | 2019年 / 62卷
关键词：
Avaatech XRF; Speleothem; Sr/Ca; Paleoclimate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Application of X-ray fluorescence core-scanning (XRF-CS) on both marine and lake sediments has achieved remarkable results. However, its application has not been widely extended to the research on speleothems. In this study, we measure the Sr abundance and the Sr/Ca ratios of three stalagmites (two aragonite stalagmites, one calcite stalagmite) using the state-of-the-art fourth-generation Avaatech high-resolution XRF core scanner. Through comparisons among different scan paths and among different scan resolutions, as well as comparisons with inductively coupled plasma optical emission spectrometer (ICP-OES), Itrax XRF, and Artax XRF results, we confirm that the Avaatech XRF core scanner could precisely, quickly, and non-destructively analyze the high-resolution Sr abundance of speleothems. Furthermore, we combine the stalagmite δ18O records to explore the paleoclimatic significance of the measured stalagmite Sr/Ca.
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页码：964 / 973
页数：9
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