| 同位素稀释热电离质谱法测定锡石U-Pb年龄探索 |
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| 关键词:cassiterite U-Pb isotope tin polymetallic deposit isochron ID-TIMS LA-ICP-MS |
| 基金项目:国家自然科学基金面上项目(编号: 41373053); 国家重点基础研究发展计划(973计划)(编号: 2015CB453000); 中国地质调查局地质调查项目(编号: 12120115013501); 北京离子探针中心开放基金(编号: DDK14-39); 国家自然科学基金青年基金(编号: 41403045; 41503052) |
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| 摘要: |
| An Investigation of U-Pb Isotope Dating of Cassiterite with Isotope Dilution-thermal Ionization Mass Spectrometry |
| Focusing on the problem of the dating of tin polymetallic deposits in China, the authors established a new method for U-Pb isotope dating of cassiterite with isotope dilution-thermal ionization mass spectrometry (ID-TIMS), and made comparison with laser ablation inductively coupled plasma mass spectrometry. Because U and Pb are purified separately by the new experimental pretreatment technology, the influence of the common lead is reduced, and the analytical precision is greatly improved. This method was applied to the cassiterite samples from a quartz-cassiterite-wolframite vein in a certain area, with a precise U-Pb isotopic age obtained. |
| TU Jia-run,CUI Yu-rong,HAO Shuang,LI Hui-min,ZHOU Hong-ying,GENG Jian-zhen.2016.An Investigation of U-Pb Isotope Dating of Cassiterite with Isotope Dilution-thermal Ionization Mass Spectrometry[J].Acta Geoscientica Sinica,37(6):779-783. |
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