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| 罗布泊全新世沉积特征及其环境意义 | |
| 引用本文： | 朱青,王富葆,曹琼英,夏训诚,李升峰,马春梅.罗布泊全新世沉积特征及其环境意义[J].地层学杂志,2009,33(3). |
| 作者姓名： | 朱青 王富葆 曹琼英 夏训诚 李升峰 马春梅 |
| 作者单位： | 1. 南京大学地理与海洋科学学院,江苏南京,210093 2. 南京大学地理与海洋科学学院,江苏南京,210093;中国科学院地球环境研究所,陕西西安,710054 3. 中国科学院新疆生态与地理研究所,新疆乌鲁木齐,830011 |
| 基金项目： | 国家自然科学基金，教育部博士点新教师基金，中国科学院地球环境研究所开放测试基金 |
| 摘 要： | 罗布泊西湖属开阔湖盆,上世纪30年代其面积达1900km2,但湖心剖面粒度分析的结果表明,其粒度组成与一般开阔湖盆有着显著的不同:沉积物常具黄色与灰色互层结构,层理清晰,黄色层的粒度组成中常含较多粗颗粒砂,灰与黄色层的混合样是以粉砂黏土为主,同时含有一定量的中、细砂,甚至粗砂。根据与风成砂和尘暴沉积的粒度组成对比,可知这种沉积特征与现代尘暴沉积有很大的相似性,因而表明风尘是罗布泊沉积的重要物源,并可据此来恢复10000a以来本区尘暴作用的强弱变化。 |
| 关 键 词： | 湖泊沉积 粒度分析 风成沉积 第四系 罗布泊 新疆 |
GRAIN SIZE DISTRIBUTION CHARACTERISTICS AND CHANGES OF LOP-NUR LAKE SEDIMENTS DURING THE PAST 10000 YEARS |
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| ZHU Qing,WANG Fu-bao,CAO Qiong-ying,XIA Xun-cheng,LI Sheng-feng,MA Chun-mei.GRAIN SIZE DISTRIBUTION CHARACTERISTICS AND CHANGES OF LOP-NUR LAKE SEDIMENTS DURING THE PAST 10000 YEARS[J].Journal of Stratigraphy,2009,33(3). | |
| Authors: | ZHU Qing WANG Fu-bao CAO Qiong-ying XIA Xun-cheng LI Sheng-feng MA Chun-mei |
| Institution: | ZHU Qing 1),WANG Fu-bao 1)2),CAO Qiong-ying 1),XIA Xun-cheng 3),LI Sheng-feng 1), MA Chun-mei 1)1)School of Geography , Oceanographic Sciences,Nanjing University,Nanjing 210093,2)Institute of Earth Environment,CAS,Xian 710054,3)Xinjiang Institute of Ecology , Geography,Urumqi 830011 |
| Abstract: | The Lake Xihu of Lop-Nur was an open lake basin with an area of 1 900km2 until the 1930s.A grain size analysis of the lake Xihu sediment shows:Lop-Nur is different from other ordinary open lake basins in sediment grain size distribution.Most of the deposits consist of regularly interbeded yellow and gray layers.The yellow layers have a higher content of coarse sands.Mixed samples of gray and yellow layers mainly consist of silts and clay,with some medium to coarse sands.The sands are interpreted as dust sto... |
| Keywords: | lacustrine deposit grain-size analysis eolian deposit Quaternary Lop-Nur Xinjiang |
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