| 鄂西利川清江源地区高海拔砾石层的发现与分析 |
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| 引用本文： | 王令占,涂兵,田洋,谢国刚,曾波夫.鄂西利川清江源地区高海拔砾石层的发现与分析[J].人民长江,2011,42(11):1-4. |
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| 作者姓名： | 王令占 涂兵 田洋 谢国刚 曾波夫 |
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| 作者单位： | 武汉地质矿产研究所,湖北武汉,430205 |
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| 基金项目： | 中国地质调查局国土资源大调查资助项目(1212010911016,1212010814057) |
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| 摘 要： | 在鄂西清江上游利川地区首次发现多处残留的高海拔河流相砾石层，砾石层均处于清江与长江分水岭地带，经对砾石层特征分析，得出结论：清江上游利川地区曾经发育与NNE向构造线近一致，总体流向南西方向的古水系，砾石层为NNE向古水系所残留的“高阶地”。清江中游建始、巴东地区砾石层的ESR年龄测定，指示现代清江形成于中更新世以来。高海拔砾石层的发现，对研究清江河谷的演变具有重要意义。
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| 关 键 词： | 高海拔砾石层 分水岭 古水系 ESR年龄 鄂西利川地区 |
Discovery and analysis of high-elevation gravel stratum in source area of Qingjiang River,Lichuan,west Hubei Province,China |
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| WANG Lingzhan,TU Bing,TIAN Yang,XIE Guogang,ZENG Bofu.Discovery and analysis of high-elevation gravel stratum in source area of Qingjiang River,Lichuan,west Hubei Province,China[J].Yangtze River,2011,42(11):1-4. |
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| Authors: | WANG Lingzhan TU Bing TIAN Yang XIE Guogang ZENG Bofu |
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| Affiliation: | WANG Lingzhan,TU Bing,TIAN Yang,XIE Guogang,ZENG Bofu(Wuhan Institute of Geology and Mineral Resources,Wuhan 430205,China) |
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| Abstract: | The first discovery of high-elevation fluvial facies gravel stratum in source area of Qingjiang River,which is located on the watershed area of the Qingjiang River and Yangtze River in the Lichuan City,west Hubei Province,is reported.By analyzing the features of the gravel stratum,it is believed that an ancient river system developed along NNE tectonic line in Lichuan area,which flowed southwest.And the discovered gravel bed is the high terrace of the ancient river.ESR age dating of the gravel in the Jiansh... |
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| Keywords: | high-elevation gravel stratum watershed ancient river system ESR age Lichuan area in west Hubei Province |
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