| 永定河沉积特征研究 |
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| 引用本文： | 邓皓匀,吴胜和.永定河沉积特征研究[J].地质与资源,2013,22(2):142-147. |
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| 作者姓名： | 邓皓匀 吴胜和 |
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| 作者单位： | 中国石油大学, 北京 102249 |
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| 摘 要： | 永定河是华北海河水系的最大支流,在其上、下游的2个河段具有明显的沉积差异.通过对永定河上、下游河段的沉积物岩样的分析,探讨了不同河段的沉积构造类型,从粒度、层理和垂向层序方面,分析了上游至下游沉积特征存在的差异,并结合永定河同一历史时期的河道展布形态,根据辫状河的形成机理,分析了不同河道段的形成原因和演化规律.
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| 关 键 词： | 永定河 辫状河 沉积特征 层理 垂向层序 |
| 收稿时间： | 2012-08-21 |
STUDY ON THE SEDIMENTARY CHARACTERISTICS OF THE YONGDING RIVER |
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| DENG Hao-yun
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WU Sheng-he.STUDY ON THE SEDIMENTARY CHARACTERISTICS OF THE YONGDING RIVER[J].Geology and Resources,2013,22(2):142-147. |
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| Authors: | DENG Hao-yun WU Sheng-he |
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| Institution: | China University of Petroleum, Beijing 102249, China |
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| Abstract: | There are obvious differences of deposition between the upstream and downstream of the Yongding River,which is the largest tributary of the Haihe River system in North China.With analysis of sediment samples from the upstream and downstream,this paper discusses the sedimentary structure types at different sections of the river.Based on the analysis of particle size,bedding and vertical sequence,the difference in sedimentary characteristics from the upstream to the downstream are studied.According to the formation mechanism of braided river and channel distribution pattern of the Yongding River in the same historical period,the formation and evolution of different river sections is discussed. |
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| Keywords: | braided river sedimentary characteristics bedding vertical sequence Yongding River |
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