| 大布苏湖全新世沉积岩芯的粒度特征与湖面波动 |
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| 引用本文： | 李志民,吕金福,冷雪天,卢珊.大布苏湖全新世沉积岩芯的粒度特征与湖面波动[J].东北师大学报(自然科学版),2000,32(2):117-122. |
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| 作者姓名： | 李志民 吕金福 冷雪天 卢珊 |
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| 作者单位： | 东北师范大学城市与环境科学学院,吉林,长春,130024 |
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| 基金项目： | 国家自然科学基金!（49671077） |
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| 摘 要： | 大布苏湖为构造断陷的封闭湖盆，现代沉积环境的研究表明，自湖岸到湖心，其平均粒径２依次递减，钻孔岩 的粒度分析和年代测定揭示，全新世以来，大布苏湖有两次高湖面和两次低湖面时期晚全新世以来，湖面波动式下降，湖水浓缩而演变为我国东部地区罕见的盐湖。
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| 关 键 词： | 大布苏湖 全新世沉积相 粒度特征 湖面波动 |
| 文章编号： | 1000-1832(2000)02-0117-06 |
| 修稿时间： | 2000-01-05 |
The grain size characteristics and the fluctuation of lake surface of the core in Holocene in Dabusu lake |
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| LI Zhi-min,LU Jin-fu,LENG Xue-tian,LU Shan.The grain size characteristics and the fluctuation of lake surface of the core in Holocene in Dabusu lake[J].Journal of Northeast Normal University (Natural Science Edition),2000,32(2):117-122. |
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| Authors: | LI Zhi-min LU Jin-fu LENG Xue-tian LU Shan |
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| Institution: | LI Zhi-min
,LU Jin-fu
,LENG Xue-tian
,LU Shan
(School of Urban and Enviroment Science,Northeast Normal University,Changchun 130024,China) |
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| Abstract: | Dabusu lake is a tectonic fault closed lake basin. The research of sedimentary envi- roment can be used to indicate that the average diameter of the sedimentation decreased suc- cessively from the bank facies to the the center facies of the lake. Two high lake surface peri- ods and two low lake surface surface periods in Dabusu lake since Holocene are revealed from the analysis associated with the grain size of the core and dating. Since late - Holocene, due to the descent of the lake surface and the concentration of the water of the lake. Dabusu lake gradually evoluted an exceptionally salty lake in the eastern area of China. |
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| Keywords: | Dabusu lake sedimentary facies of Holocene grain size characteristics fluctua- tion of lake surfa |
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