| 三峡库区万州区山湾堰塘沉积物特征及演化历史 |
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| 引用本文： | 刘雪梅,殷坤龙,李远耀,柴波,汤罗圣. 三峡库区万州区山湾堰塘沉积物特征及演化历史[J]. 地球科学, 2010, 35(6): 1069-1074. DOI: 10.3799/dqkx.2010.121 |
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| 作者姓名： | 刘雪梅 殷坤龙 李远耀 柴波 汤罗圣 |
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| 作者单位： | 中国地质大学工程学院，湖北武汉 430074 |
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| 基金项目： | 国家自然科学基金项目(No.40872176) |
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| 摘 要： | 万州特有的阶梯状地貌特征是万州地区河流地貌演化及水平地层特殊地质环境共同作用的结果，通过系统的野外地质调查、勘探和资料收集，结合2008年堰塘的湖中钻探，对该堰塘沉积物进行系统取样与分析，并进行了沉积物年龄与成分的测定.结果表明山湾陡崖的崩塌与阶地抬升及区域构造运动一致.绘制了山湾滑坡崩塌堆积物各期次沉积剖面，共分为10个崩塌旋回.结合沉积物测年，研究了山湾滑坡体沉积物沉积速率，得出了山湾危岩陡崖后退速率为0.31~0.37 m/ka.
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| 关 键 词： | 近水平地层 沉积速率 陡崖 后退速率 沉积物 工程地质 |
| 收稿时间： | 2010-04-25 |
Shanwan Pond Sediment Characteristics and Evolutionary History at Wanzhou City in the Three Gorges Reservoir |
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| LIU Xue-mei,YIN Kun-long,LI Yuan-yao,CHAI Bo,TANG Luo-shengFaculty of Engineering,China University of Geosciences,Wuhan ,China. Shanwan Pond Sediment Characteristics and Evolutionary History at Wanzhou City in the Three Gorges Reservoir[J]. Earth Science-Journal of China University of Geosciences, 2010, 35(6): 1069-1074. DOI: 10.3799/dqkx.2010.121 |
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| Authors: | LIU Xue-mei YIN Kun-long LI Yuan-yao CHAI Bo TANG Luo-shengFaculty of Engineering China University of Geosciences Wuhan China |
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| Affiliation: | LIU Xue-mei,YIN Kun-long,LI Yuan-yao,CHAI Bo,TANG Luo-shengFaculty of Engineering,China University of Geosciences,Wuhan 430074,China |
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| Abstract: | The interaction of fluvial geomorphology evolution and special geological environment in horizontal formation in Wanzhou district resulted in its unique stepladder geomorphic feature.Based on a systematic field investigation,exploration and data collection,combining with the drilling at Shanwan pond in 2008,we conducted a comprehensive study of its sediment for the first time,systematically collecting sediment samples,doing analysis to determine its age and composition.It shows the consistency of Shanwan cl... |
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| Keywords: | nearly horizontal formation deposition rate cliff recession rate sediments engineering geology |
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