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| 百色盆地右江阶地特征及演化研究 | |
| 引用本文： | 张,鲲 李细光 李志勇.百色盆地右江阶地特征及演化研究[J].中国地质,2012,39(4):972-977. |
| 作者姓名： | 张 鲲 李细光 李志勇 |
| 作者单位： | 1. 武汉地质矿产研究所,湖北武汉,430070 2. 广西壮族自治区地震局,广西南宁,530022 3. 中国地质大学,湖北武汉,430074 |
| 摘 要： | 百色盆地位于广西壮族自治区西部,右江穿过盆地中间流向南东。笔者在前人研究的基础上,通过野外地质调查,得出了百色盆地西部地区普遍发育Ⅰ-Ⅲ级阶地,其中Ⅲ级阶地遭受断裂活动改造破坏,呈阶梯状台地,在百色市东富联村可见Ⅳ级阶地发育。总结了百色盆地右江阶地各级阶地特征,并通过TL热释光测年,得出了Ⅱ级阶地河流阶地底部堆积物的年龄为距今(16.736±1.422)×104～(17.712±1.506)×104a,Ⅲ级阶地河流阶地堆积物的年龄为距今(21.097±1.793)×104～(29.365±2.496)×104a。 |
| 关 键 词： | 百色盆地 右江阶地 构造演化 |
The characteristics and evolution of Youjiang terrace, Bose Basin |
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| ZHANG Kun,LI Xi-guang,LI Zhi-yong.The characteristics and evolution of Youjiang terrace, Bose Basin[J].Chinese Geology,2012,39(4):972-977. | |
| Authors: | ZHANG Kun LI Xi-guang LI Zhi-yong |
| Institution: | 1.Wuhan Institute of Geology and Mineral Resources,Wuhan 430070,Hubei,China;2.Earthquake Administration of Guangxi,Nanning 530022,Guangxi,China;3.China University of Geosciences,Wuhan 430074,Hubei,China) |
| Abstract: | Bose Basin is located in western Guangxi.The Youjiang River flows southeastward through the middle of the Bose Basin.On the basis of field geological survey in combination with previous studies,the authors have reached the conclusion that I-III order terraces are generally developed in western Bose Basin,and Ⅲ-order terraces which suffered damage by active faults are ladder-like.Ⅳ-order terraces are developed at Fulian Village of Bose.The characteristics of Youjiang terraces are summarized in this paper,and the ages of the terraces deposits are determined.The ages of the subjacent deposits of Ⅱ-order terraces are dated at(16.736±1.422)×104 a-(17.712±1.506)×104 a BP,whereas the ages of the subjacent deposits of Ⅲ-order terraces are dated at(21.097±1.793)×104 a-(29.365±2.496)×104 a BP. |
| Keywords: | Bose basin Yongjiang terraces tectonic evolution |
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