| 四川开江恐龙骨骼化石矿物组分分离和微量元素组合的研究 |
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| 引用本文： | 张玉光,李奎,蔡开基.四川开江恐龙骨骼化石矿物组分分离和微量元素组合的研究[J].沉积与特提斯地质,1998,18(4):49-56. |
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| 作者姓名： | 张玉光 李奎 蔡开基 |
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| 作者单位： | 成都理工学院古脊椎动物研究室 |
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| 基金项目： | 地质行业科学技术发展基金 |
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| 摘 要： | 文章详述了恐龙骨骼化石矿物组分的化学分离方法，同时对开江恐龙骨骼化石样品进行了分离和中子活化分析，通过对测试结果进行生物地球化学的对比研究，发现恐龙骨骼化石中某些微量元素异常明显，并推断其中的砷（Ａｓ）、铬（Ｃｒ）、铷（Ｒｂ）的高异常含量和锌（Ｚｎ）的低异常含量极有可能是导致开江恐龙动物群集群死亡的原因之一。
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| 关 键 词： | 矿物组分 化学分离 微量元素组合 恐龙骨骼化石 四川开江 |
The chemical separation of mineral compositions and trace element assemblages from the dinosaur skeletal fossils in Kaijiang,Sichuan |
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| Zhang Yuguang,Li Kui,Cai Kaiji.The chemical separation of mineral compositions and trace element assemblages from the dinosaur skeletal fossils in Kaijiang,Sichuan[J].Sedimentary Geology and Tethyan Geology,1998,18(4):49-56. |
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| Authors: | Zhang Yuguang Li Kui Cai Kaiji |
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| Institution: | Laboratory of Vertebrate Palaeontology, Chengdu University of Technology |
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| Abstract: | One chemical separation method used in mineral composition separation of the di-nosaur skeletal fossils is introduced in detail in this paper,and the chemical separation and instrumental neutron activation analysis(INAA)of the dinosaur skeletal fossils from Kai-jiang,Sichuan have been made.The biogeochemical study of the analytical results shows that the highly anomalous Ba,U and rare earth elements may well result from burial diage-nesis of the dead dinosaurs;it should not be responsible for mass extinction of dinosaurs. The high anomalies of As,Cr and Rb elements and low anomalies of Zn element in the fos-sils should be caused by the food chains and surrounding media,and thus may lead to the mass mortality of the dinosaur faunas in the study area. |
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| Keywords: | mineral composition chemical separation trace element assemblage dinosaur skeletal fossil Kaijiang in Sichuan |
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