| 桂林岩溶盆地第四纪粘土砾石层沉积与漓江袭夺 |
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| 引用本文： | 甘大昌.桂林岩溶盆地第四纪粘土砾石层沉积与漓江袭夺[J].南方国土资源,1992(2). |
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| 作者姓名： | 甘大昌 |
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| 作者单位： | 桂林水文地质工程地质勘察院 |
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| 摘 要： | 通过对桂林岩溶盆地内第四纪粘土砾石层调查研究,认为:①粘土砾石层成因不属冰川沉积或湖相沉积,而是山地河流相沉积和再沉积产物。前者时化属中更新世,后者成因复杂,已发现坡积相、洪积相,时代属晚更新世;②漓江溯源侵蚀过程中发生多次袭夺;③岩溶盆地的发育与漓江袭夺控制和影响粘土砾石层的沉积和再沉积。
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| 关 键 词： | 粘土砾石 山地河流相沉积 漓江袭夺 |
A DISCUSSION ON THE RELATIONS BETWEEN DEPOSITION OF THE QUARTERNARYCLAY AND GRAVEL AND CHANGING COURSE OF THE LIRIVER IN THE GUILINKARST BASIN |
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| Authors: | Gan Dachang |
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| Institution: | Guilin Institute of Hydrogeoiogical and Engineering-Geological Investigation |
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| Abstract: | Based on investigation of the Quarternary clay and gravel layers several points are proposed in this paper as follows:
1. The clay and gravel layers are not genetically related to the depositions of glaciers and lakes, but are the products of the deposition and redeposition by rivers in mountainous area; The deposits of glacier and lake are Middle pleistocene in age , while the fluvial deposits belong to late Pleistocene;
2. Several changes of courses occured during the development of the Li River;
3. The formation of the clay and gravel layers was controlled by the development of the karst basin and the changes of the river course. |
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| Keywords: | clay gravel mountainous fluvial deposit Li River change of course |
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