| 激光剥蚀电感耦合等离子体质谱副矿物U-Th-Pb定年新进展 |
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| 引用本文： | 罗涛,胡兆初.激光剥蚀电感耦合等离子体质谱副矿物U-Th-Pb定年新进展[J].地球科学,2022,47(11):4122-4144. |
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| 作者姓名： | 罗涛 胡兆初 |
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| 作者单位： | 中国地质大学地质过程与矿产资源国家重点实验室, 湖北武汉 430074 |
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| 基金项目： | 国家杰出青年科学基金项目41725013国家自然科学基金项目41903015国家自然科学基金项目42142005国家自然科学基金项目41873029湖北省自然科学基金项目2020CFA045 |
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| 摘 要： | 激光剥蚀电感耦合等离子体质谱（LA-ICP-MS）副矿物U-Th-Pb定年技术为精确厘定地质演化历史、探讨成岩成矿等重要地质作用过程提供重要的时间参数，是地质年代学快速发展的重要技术支撑.总结了LA-ICP-MS副矿物U-Th-Pb定年技术在元素分馏校正、非基体匹配分析、标准样品研发、普通铅校正、高空间分辨率及高效率分析等方面取得的重要进展.展望未来，需更进一步深入探讨和研究元素分馏及基体效应机理，研发更多种类的高质量副矿物标样，建立更多更准确、更精密、更高空间分辨率及更高效的LA-ICP-MS副矿物U-Th-Pb定年新方法和新技术，以实现从更微观和更精细的角度探讨地质问题，并持续为高效解决地球与行星科学研究领域重大科学问题提供关键支撑.
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| 关 键 词： | 激光剥蚀电感耦合等离子体质谱 U-Th-Pb年代学 元素分馏 基体效应 标准样品 普通铅校正 年代学 |
| 收稿时间： | 2022-06-30 |
Recent Advances in U-Th-Pb Dating of Accessory Minerals by Laser Ablation Inductively Coupled Plasma Mass Spectrometry |
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| Abstract: | Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Th-Pb dating technique provides crucial temporal constraints to accurately determine geological evolution history and explore important geological processes such as diagenesis and mineralization, which is an important technical support for the rapid development of geochronology. In this study, it summarizes the important progress of LA-ICP-MS U-Th-Pb dating technique in elemental fractionation correction, non-matrix matched analysis, reference material development, common lead correction, high spatial resolution and high efficiency analysis. Looking into the future, further investigations on the mechanism of elemental fractionation and matrix effect, characterization of more kinds of high-quality reference materials, and development of more accurate, more precise, and more efficient LA-ICP-MS U-Th-Pb dating methods with higher spatial resolution are needed. These new established methods and techniques will help the geoscientists investigate the geological problems from a more microscopic and delicate perspective, and those will continue to provide critical supports for the advances and innovations in earth and planetary science research. |
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