| 不平衡铀系定年的新技术突破──高精度、高灵敏度￣（238）U—￣（234）U—￣（230）Th同位素质谱测定和应用 |
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| 引用本文： | 李献华.不平衡铀系定年的新技术突破──高精度、高灵敏度￣（238）U—￣（234）U—￣（230）Th同位素质谱测定和应用[J].地球科学进展,1994(3). |
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| 作者姓名： | 李献华 |
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| 作者单位： | 中国科学院广州地质新技术研究所 |
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| 摘 要： | ８０年代中期发展起来的高精度、高灵敏度不平衡铀系热电离质谱定年新技术是同位素定年技术的一次革命性突破，并已在古气候、古环境、古海洋、考古学以及近代火山—岩浆作用研究中取得了一系列重要成果，本文介绍了这方面的研究进展。这一新技术已引起越来越广泛的重视，显示出巨大的应用前景。尽快开展不平衡铀系热电离质谱定年技术的应用，对提高我国的高分辩率第四纪年代学分析技术和应用研究水平有重要意义。
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| 关 键 词： | 不平衡铀系定年，热电离质谱（TIMS） |
NEW TECHNIQUE BREAK OF U Th DISEQUILIBRIUM AGE DETERMINATION BY THERMAL INIZATION MASS SPECTROMETRY(TIMS) |
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| Li Xianhua.NEW TECHNIQUE BREAK OF U Th DISEQUILIBRIUM AGE DETERMINATION BY THERMAL INIZATION MASS SPECTROMETRY(TIMS)[J].Advance in Earth Sciences,1994(3). |
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| Authors: | Li Xianhua |
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| Abstract: | High-sensitive and high-precision U-Th disequilibrium age determination by thermal-ionization mass spectrometry(TIMS),which has been developed since the middle of 1980,s,has resulted in a revolutionary improvement of isotopic dating techniques. This has ob-tained significant achievements in palaeoclimate,palaeoenvironment,palaeo-ocean,ar-chaeology and modern volcanism-magmatism studies. This new technique has attracted in-creasing attentions,and manifests great potential to open up a wide range of new applica-tions. Development of TIMS U-Th dating technique as soon as possible in China is of sig-nificance to promote the study and application of high-resolution Quaternary geochronolo-gy in our country. |
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| Keywords: | U Th disequilibrium age determination Thermal-ionization massspectrometry(TIMS) |
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