| 黄河三角洲上特殊侵蚀沟槽的研究 |
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| 引用本文： | 钟建华,倪晋仁,吴孔友,李理.黄河三角洲上特殊侵蚀沟槽的研究[J].高校地质学报,2000,6(3):462-469. |
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| 作者姓名： | 钟建华 倪晋仁 吴孔友 李理 |
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| 作者单位： | 1. 石油大学 资源系，山东 东营 257061；2. 北京大学 城市规划系 环境科学中心， 北京 100871 |
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| 基金项目： | 国家自然科学基金，中国科学院资助项目，教育部科学技术研究项目，G1999043603，49972037，Q99E01，，， |
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| 摘 要： | 黄河独特的水文条件、沉积物的细粒特性，以及黄河三角洲地区近年来的半干旱气候条件，尤其黄河近年来严重断流导致了黄河三角洲水上平原发育了大量的异常地质现象，特殊侵蚀沟槽便是其中之一。根据平面形态侵蚀沟槽可分为线状、树枝状、坑洞状、面状，网状及隧道状几种；横剖面形态有“U”形、“V”形、梯形或窄缝形。其规模不一，小者长数厘米，宽深数厘米；大者长数十、甚至百余米；宽十几米，深数十厘米到一米多。沟槽壁上常发育滑塌、流痕或类钟乳等次级构造。
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| 关 键 词： | 侵蚀沟槽 三角洲 黄河 沉积构造 |
| 收稿时间： | 2000-09-20 |
| 修稿时间： | 1999-11-29 |
Unusual Erosion Channels in Yellow River Delta: Features and Genesis |
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| ZHONG Jian-hua,NI Jin-ren,WU Kong-you,LI Li.Unusual Erosion Channels in Yellow River Delta: Features and Genesis[J].Geological Journal of China Universities,2000,6(3):462-469. |
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| Authors: | ZHONG Jian-hua NI Jin-ren WU Kong-you LI Li |
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| Institution: | 1. Geochemical and Lithosphere Dynamic Laboratory，Petroleum University of China，Dongying City，Shangdong 257061，China; 2. Center for Environment Science，Beijing University，Beijing 100871，China |
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| Abstract: | The geological environment in Yellow River delta is characterized by unusual hydrologic conditions, fine sediments, semi-arid climate and frequent flow-abruption. Consequently, many peculiar geological phenonena, such as the unusual erosion channels, are developed abundantly in the overwater plain. It is believed that these channels are formed by runoff resulting from rain and/or melt snow and ice under exposure condition. Based on their plane morphologies, the unusual erosion channels may be divided into six types, i.e., linear, dendritic, pit-like or hole-like, planar, net-like and tunnel-like channels. The size of channel is variable. The small channels usually are tens of centimeters in length and a few centimeters in width and depth, while the large one could reach up to tens of meters in length. The channel wall often has slump (deformation) structures, rill marks and silt stalatite-like structures. |
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| Keywords: | erosion channel delta Yellow River |
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