| 铅同位素研究新进展──“双稀释剂”测定方法和“AGSO-CSIRO”模式年龄 |
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| 引用本文： | 常向阳.铅同位素研究新进展──“双稀释剂”测定方法和“AGSO-CSIRO”模式年龄[J].地球与环境,1999(2). |
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| 作者姓名： | 常向阳 |
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| 作者单位： | 中国科学院广州地球化学研究所!广州,510640 |
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| 摘 要： | 适当的仪器质量分馏校正是提高同位素分析数据精度的关键 ,重新“复活”了的铅同位素“双稀释剂”测定方法可实现严格的仪器质量分馏校正。以区域锆石U -Pb年龄为控制点的“AGSO -CSIRO”铅同位素模式年龄方法可获得精度很高的定年结果 ,铅同位素研究的应用必将因此而得到更大的发展。
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| 关 键 词： | 双稀释剂 铅同位素 模式年龄 年代学 |
LEAD ISOTOPE MEASUREMENTS BY THE "DOUBLE SPIKE" TECHNIQUE AND "AGSO-CSIRO" Pb MODEL AGE |
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| Chang Xiangyang\ Zhu Bingquan.LEAD ISOTOPE MEASUREMENTS BY THE "DOUBLE SPIKE" TECHNIQUE AND "AGSO-CSIRO" Pb MODEL AGE[J].Earth and Environment,1999(2). |
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| Authors: | Chang Xiangyang\ Zhu Bingquan |
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| Abstract: | In Pb\|isotope analysis, an adequate correction for instrumental mass fractionation can result in marked improvements on both precision and accuracy. Rigorous correction for the effects of mass discrimination is made possible by the resurgent \!double spike" technique. AGSO\|CSIRO Pb model ages with a local control point can fine\|tune Pb model ages. Pb\|isotope applications will be further developed. |
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| Keywords: | double spike lead isotope model age geochronology |
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