光谱学与光谱分析 |
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Mapping Metal Elements of Shuangbai Dinosaur Fossil by Synchrotron X-Ray Fluorescence Microprobe |
WANG Yi-lin1,YANG Qun1,Ablett J M2 |
1. Department of Physics and Electronic Science, Chuxiong Normal University, Chuxiong 675000, China 2. National Synchrotron Light Source Brookhaven National Laboratory, New York, 11973, USA |
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Abstract The metal elements mapping of Shuangbai dinosaur fossil, was obtained by synchrotron x-ray fluorescence(SXRF). Eight elements, Ca, Mn, Fe, Cu, Zn, As, Y and Sr were determined. Elements As and Y were detected for the first time in the dinosaur fossil. The data indicated that metal elements are asymmetrical on fossil section. This is different from common minerals. Mapping metals showed that metal element As is few. The dinosaur most likely belongs to natural death, This is different from Zigong dinosaurs which were found dead from poisoning. This method has been used to find that metals Fe and Mn are accrete, and the same is ture for Sr and Y. This study indicated that colloid granule Fe and Mn, as well as Sr and Y had opposite electric charges in lithification process of fossils. By this analysis, compound forms can be ascertained. Synchrotron light source x-ray fluorescence is a complementary method that shows mapping of metal elements at the dinosaur fossil, and is rapid, exact and intuitionist. This study shows that dinosaur fossil mineral imaging has a potential in reconstructing the paleoenvironment and ancient geology.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
WANG Yi-lin
E-mail: ylwang@cxtc.edu.cn
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