| 含澄江动物群地层的Pb-Pb同位素定年 |
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| 关键词:Chengjiang Fauna lead isotope dating |
| 基金项目:国家自然科学基金项目(编号:40073001)，云南省基金重点项目(编号:97D0072) |
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| Pb-Pb Isotope Dating of the Chengjiang Fauna-bearing Beds |
| Twenty fresh black shale samples collected from the Chengjiang Fauna-bearing horizon of central Yunnan province yield a Pb-Pb isochron age of 534±60 Ma. Although this age is younger than the Rb-Sr isochron age and the 40 Ar- 39 Ar age,it should be regarded as the lower limit of the isotope age of the Chengjiang Fauna. |
| CHANG Xiang-yang,CHEN Liang-zhong,HU Shi-xue,WANG Jiang-hai,ZHU Bing-quan.2004.Pb-Pb Isotope Dating of the Chengjiang Fauna-bearing Beds[J].Acta Geoscientica Sinica,25(2):181-184. |
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