| 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。 |
| 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 |
| DOI： |
| 附件 |
|
| 基金项目:地质行业科学技术发展基金资助项目(项目编号:959614)成果之一 |
|
| The chemical separation of mineral compositions and trace element assemblages from the dinosaur skeletal fossils in Kaijiang,Sichuan |
| Zhang Yuguang, Li Kui, Cai Kaiji |
| (Laboratory of Vertebrate Palaeontology, Chengdu University of Technology) |
| 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. |
| Key words: mineral composition chemical separation trace element assemblage dinosaur skeletal fossil Kaijiang in Sichuan |
