| 40Ar-39Ar同位素定年方法研究进展 |
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| 引用本文： | 张佳,刘汉彬,李军杰,金贵善,韩娟,张建锋.40Ar-39Ar同位素定年方法研究进展[J].国外铀金地质,2014(1):53-58. |
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| 作者姓名： | 张佳 刘汉彬 李军杰 金贵善 韩娟 张建锋 |
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| 作者单位： | 核工业北京地质研究院,北京100029 |
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| 基金项目： | 中国核工业集团公司地矿事业部铀矿地质科研项目＂华东南热液型铀矿成矿时代与成矿温度研究＂资助（编号：测D1101） |
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| 摘 要： | ^40Ar-^39Ar同位素定年法是由K-Ar法发展而来,通过将39K利用快中子辐照衰变成^39Ar,测量40Ar^＊/^39Ar来获得年龄值.经过长期发展,该方法的测试技术逐渐成熟,其中气体提取发展为常规阶段升温法、激光显微探针法以及真空压碎流体包裹体法；气体纯化主要有冷阱去除法、钛泵吸附法、锆铝泵吸附法；气体测试的质谱仪也在灵敏度、分辨率、背景值等技术指标上有很大提高.^40Ar-^39Ar同位素定年法在石油、固体矿产等方面应用广泛,尤其在油气成藏时间、成岩成矿作用时间的热年代学研究等领域.
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| 关 键 词： | ^40Ar-^39Ar法 同位素定年 地质应用 研究进展 |
Advances in the study of 40Ar-39Ar isotopic dating method |
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| Authors: | ZHANG Jia LIU Han-bin LI Jun-jie JIN Gui-shan HAN Juan ZHANG Jian-feng |
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| Institution: | (Beijing Research Institute of Uranium Geology, Beijing, 100029 China) |
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| Abstract: | ^40Ar-^39Ar isotopic dating method is developed from K-Ar method which irradiate ^39K into ^39Ar by fast neutron and measure ^40Ar^＊/^39Ar to get the age value. After a long-term development, testing technologies of this method is matured, gas extraction stage has been developed into the conventional step-heating method, laser microprobe law as well as fluid inclusions vacuum crushing method. Gas purification methods mainly contain cold trap removal method, titanium pump adsorption method and zirconium-aluminum pump adsorption method. For gas testing, some technical indicators of mass spectrometers have greatly improved, especially in sensitivity, resolution, background. ^40Ar-^39Ar isotopic dating method is widely applied in the fields of petroleum, solid minerals, etc., especially in thermochronology for hydrocarbon accumulation time, diagenetic time, mineralization time. |
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| Keywords: | ^40Ar-^39Ar method isotopic dating geological application study advances |
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