Ar-Ar质谱法对南极乔治王岛火山岩同位素年龄的测定  

Ar-Ar Isotopic Dating of Volcanic Rock in George King Island, West Antarctica

作　　者：郑祥身[1] 裘冀[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029

出　　处：《质谱学报》2000年第3期155-156,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：Ar-Ar total fusion and step heating methods have been used to determination the isotopic ages of the volcanic rocks from George King Island ,west Antarctica .Argon isotopes of the seven volcanic rock samples are measured in the modified RGA10mass spectrometer, operated in static mode .Some useful Ar-Ar plateau ages , isochrone ages and the initial 40Ar/36Ar ratios of these samples are given and their geological implications are discussed in this paper .Ar-Ar total fusion and step heating methods have been used to determination the isotopic ages of the volcanic rocks from George King Island ,west Antarctica .Argon isotopes of the seven volcanic rock samples are measured in the modified RGA10mass spectrometer, operated in static mode .Some useful Ar-Ar plateau ages , isochrone ages and the initial 40Ar/36Ar ratios of these samples are given and their geological implications are discussed in this paper .

关 键 词：火山岩 同位素年龄测定 Ar-Ar质谱法 

分 类 号：P588.14[天文地球—岩石学] P597[天文地球—地质学]