|
|||||
|
|
| 湖光岩玛珥湖非残渣态Rb/Sr比值研究及其古气候意义 | |
| 引用本文： | 曾艳,陈敬安,张维,朱正杰,李键.湖光岩玛珥湖非残渣态Rb/Sr比值研究及其古气候意义[J].地球化学,2011,40(3):249-257. |
| 作者姓名： | 曾艳 陈敬安 张维 朱正杰 李键 |
| 作者单位： | 1. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵州贵阳,550002;中国科学院,研究生院,北京,100049 2. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵州贵阳,550002 3. 贵州省环境科学研究设计院,贵州贵阳,550002 4. 中国科学院,地球化学研究所,环境地球化学国家重点实验室,贵州贵阳,550002;外生成矿与矿山环境重庆市重点实验室,重庆地质矿产研究院,重庆,400042 |
| 基金项目： | 国家自然科学基金(40873084,40721002) |
| 摘 要： | 湖泊沉积物Rb/Sr比值变化主要受控于Sr含量的变化,而真正反映流域化学风化强度的主要是迁移至集水盆地(湖泊)的溶解态Sr2+,在沉积物中主要以碳酸盐结合态和铁锰氧化物结合态等形式存在.通过对不同赋存状态的Rb/Sr比值与相应的Sr含量之间相关关系的对比分析发现,沉积物非残渣态Rb/Sr比值更好地反映了流域化学风化.根... |
| 关 键 词： | 沉积物 Rb/Sr比值 化学风化 湖光岩玛珥湖 |
The non-residual Rb/Sr ratio of the Huguangyan Maar Lake and its implications for paleoclimate change |
|
| ZENG Yan,CHEN Jing-an,ZHANG Wei,ZHU Zheng-jie,Li Jian.The non-residual Rb/Sr ratio of the Huguangyan Maar Lake and its implications for paleoclimate change[J].Geochimica,2011,40(3):249-257. | |
| Authors: | ZENG Yan CHEN Jing-an ZHANG Wei ZHU Zheng-jie Li Jian |
| Institution: | ZENG Yan1,2,CHEN Jing-an1,ZHANG Wei3,ZHU Zheng-jie1,4 and Li Jian1 1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,3.Guizhou Research and Designing Institute of Environmental Science,4.Chongqing Key Laboratory of Exogenic Minerallization and Mine Environment,Chongqing Institute of Geology and Mineral Resources,Chongqing 400042 |
| Abstract: | The Rb/Sr ratios in lake sediments depend on Sr contents.The chemical weathering of the drainage basin can be better reflected by dissolved Sr2+,which is mainly bound to carbonate and/or to Fe-Mn oxides in lake sediments.Through comparative analysis of Rb/Sr ratios in non-residual,residual and bulk samples,we found that the Rb/Sr ratios in non-residual samples were the closest to the chemical weathering in the catchment basin.The history of chemical weathering of the past 1000 years in the catchment of Hugu... |
| Keywords: | sediments Rb/Sr ratios chemical weathering Huguangyan Maar Lake |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |