Impact and Correction of Analytical Positioning on Accuracy of Zircon U-Pb Dating by SIMS
文献类型：期刊论文
| 作者 | Liu, Yu1,3; Li, Qiu-Li1,2,3; Ling, Xiao-Xiao1,3; Tang, Guo-Qiang1,3; Li, Jiao1,3; Li, Xian-Hua1,2,3 |
| 刊名 | FRONTIERS IN CHEMISTRY
 |
| 出版日期 | 2020-12-03 |
| 卷号 | 8页码:8 |
| 关键词 | SIMS zircon U-Pb dating positioning effect metamorphic overgrowth |
| ISSN号 | 2296-2646 |
| DOI | 10.3389/fchem.2020.605646 |
| 英文摘要 | Secondary ion mass spectrometry (SIMS) is one of the most important analytical tools for geochronology, especially for zircon U-Pb dating. Due to its advantages in spatial resolution and analytical precision, SIMS is the preferred option for multi-spot analyses on single zircon grain with complex structures. However, whether or how much the relative positions of multiple analytical spots on one zircon grain affect the U-Pb age accuracy is an important issue that has been neglected by most researchers. In this study, we carried out a series of investigation on the influence of relative analytical position during zircon U-Pb age analyses, using Cameca IMS 1280-HR instrument. The results demonstrated a significant influence on the second spot, with apparent U-Pb age deviation as high as around 10% especially on the left and right side with overlap in the raster area. Nevertheless, a linear correlation between a secondary ion centering parameter (DTCA-X) and age deviation in percentage terms was found, and a calibration method was established to correct this position effect. Four zircon standards (91500, M257, TEMORA-2, and Plesovice) were measured to prove the reliability of the established procedure. The original U-Pb apparent data show inconsistent deviation on four directions relative to the datum, while the final U-Pb age results is calibrated to be consistent with their recommended values, within uncertainties of similar to 1%. This work calls for re-examination for the previous SIMS U-Pb dating results on core-rim dating strategy, and provides a calibration protocol to correct the relative position effect. |
| WOS关键词 | NATURAL REFERENCE MATERIAL ; ISOTOPE RATIOS ; TRACE-ELEMENT ; TH-PB ; AGE ; GEOCHRONOLOGY ; METAMORPHISM ; CONSTRAINTS ; SHRIMP ; CHINA |
| 资助项目 | Chinese State Key Research and Development Program[2016YFE0203000] ; National Natural Science Foundation of China[41673059] ; National Natural Science Foundation of China[41773044] ; National Natural Science Foundation of China[41773047] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000599303700001 |
| 出版者 | FRONTIERS MEDIA SA |
| 资助机构 | Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; Chinese State Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/99897]  |
| 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 | Li, Qiu-Li |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yu,Li, Qiu-Li,Ling, Xiao-Xiao,et al. Impact and Correction of Analytical Positioning on Accuracy of Zircon U-Pb Dating by SIMS[J]. FRONTIERS IN CHEMISTRY,2020,8:8. |
| APA | Liu, Yu,Li, Qiu-Li,Ling, Xiao-Xiao,Tang, Guo-Qiang,Li, Jiao,&Li, Xian-Hua.(2020).Impact and Correction of Analytical Positioning on Accuracy of Zircon U-Pb Dating by SIMS.FRONTIERS IN CHEMISTRY,8,8. |
| MLA | Liu, Yu,et al."Impact and Correction of Analytical Positioning on Accuracy of Zircon U-Pb Dating by SIMS".FRONTIERS IN CHEMISTRY 8(2020):8. |
入库方式： OAI收割
来源：地质与地球物理研究所
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