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| 澧阳平原晚冰期短尺度气候变化的风成沉积物稀土元素和粒度记录 | |
| 引用本文： | 毛龙江,莫多闻,周昆叔,郭伟民,杨競红,邓辉,史辰羲,贾敬禹.澧阳平原晚冰期短尺度气候变化的风成沉积物稀土元素和粒度记录[J].中国沙漠,2010,30(2):267-272. |
| 作者姓名： | 毛龙江 莫多闻 周昆叔 郭伟民 杨競红 邓辉 史辰羲 贾敬禹 |
| 作者单位： | 1. 南京信息工程大学,大气科学学院,江苏,南京,210044;北京大学,城市与环境学院,北京,100871 2. 北京大学,城市与环境学院,北京,100871 3. 中国科学院,地质与地球物理研究所,北京,100029 4. 湖南省文物考古研究所,湖南,长沙,410008 5. 南京大学,地球科学系,江苏,南京,210093 |
| 基金项目： | 国家自然科学基金杰出青年科学基金，国家科技支撑计划项目课题，科技部科研项目，国家自然科学基金 |
| 摘 要： | 对澧阳平原SL剖面的系统采样和室内稀土元素分析、粒度分析和AMS14C年代测定,揭示了澧阳平原岗地黄土剖面成因特征,探讨了澧阳平原晚冰期短尺度的气候变化过程。结果表明,澧阳平原岗地黄土在稀土元素配分模式上与黄土高原黄土-古土壤、镇江下蜀黄土具有高度的一致性,而且岗地剖面沉积物无任何水流作用痕迹,因此表明,澧阳平原岗地黄土剖面为风成成因。粒度结果表明,SL剖面较好地记录了晚冰期短尺度的气候变化过程,SL遗址剖面自然沉积物记录了晚冰期千年尺度的气候事件,如BL事件、OlderYD事件、AL事件、YD事件。SL剖面全新世早期表现为升温阶段,9.0～8.00kaBP的彭头山文化在此区兴起,表明此时气候相当适宜,适合人类生存。 |
| 关 键 词： | 澧阳平原 晚冰期 粒度 稀土元素 东亚季风 |
| 收稿时间： | 2008-9-22 |
| 修稿时间： | 2008-10-27 |
Short-term Climate Events in Late Glacial Recorded by Rare Earth Elements and Sedimentary Grain-size in Tableland Profile in Liyang Plain,Hunan |
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| MAO Long-jiang,MO Duo-wen,ZHOU Kun-shu,GUO Wei-min,YANG Jing-hong,DENG Hui,SHI Chen-xi,JIA Jing-yu.Short-term Climate Events in Late Glacial Recorded by Rare Earth Elements and Sedimentary Grain-size in Tableland Profile in Liyang Plain,Hunan[J].Journal of Desert Research,2010,30(2):267-272. | |
| Authors: | MAO Long-jiang MO Duo-wen ZHOU Kun-shu GUO Wei-min YANG Jing-hong DENG Hui SHI Chen-xi JIA Jing-yu |
| Institution: | MAO Long-jiang1,2,MO Duo-wen2,ZHOU Kun-shu3,GUO Wei-min4,YANG Jing-hong5,DENG Hui2,SHI Chen-xi2,JIA Jing-yu2(1.College of Atmospheric Science,Nanjing University of Information Science and Technology,Nanjing 210044,China,2.College of Urban and Environmental Sciences,Peking University,Beijing 100871,3.Institute of Geology and Geophysics,CAS,Beijing 100029,4.Hunan Provincial Institute of Cultural Relies and Archaeology,Changsha 410008,5.Department of Earth Science,Nanjing University,Nanjing ... |
| Abstract: | Based on field investigation,sampling,and experimental analysis such as grain size and rare earth elements(REE) analysis,as well as AMS14C dating at the SL soil profile in the Liyang plain,the soil formation process has been revealed,and the short-term climate change events in Late glacial have been determined.The results show the REE distribution patterns of sediments from SL soil profile in Liyang Plain is similar to those of loess-paleosol in the Loess Plateau,and Xiashu loess in Zhenjiang.Moreover,field... |
| Keywords: | Liyang Plain Late glacial grain-size rare earth elements east Asian Monsoon |
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