| 忻定盆地周缘山地的层状地貌与第四纪阶段性隆升 |
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| 引用本文： | 张世民,任俊杰,罗明辉,丁锐,吕志强.忻定盆地周缘山地的层状地貌与第四纪阶段性隆升[J].地震地质,2008,30(1):187-201. |
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| 作者姓名： | 张世民 任俊杰 罗明辉 丁锐 吕志强 |
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| 作者单位： | 中国地震局地壳应力研究所,北京,100085 |
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| 基金项目： | 地震行业科研专项
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地震科学联合基金 |
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| 摘 要： | 忻定盆地位于汾渭地堑系北段,是一个典型的新生代张性断陷盆地,其周缘由持续隆升的断块山地围绕。断块山地的阶段性隆升在山麓地带形成了由山麓剥蚀面与河流阶地构成的6级联合地貌面,并在山区河段形成了由急流段与缓流段相间分布的河流纵剖面形态,急流河段的最高点对应阶地在上游方向上的消失点。急流段由多级跌水组成,是断层多期地表错动的结果,代表了山地快速隆升时期,而缓流河段代表了山地相对稳定期。根据河流阶地的断代以及急流河段与缓流河段的相对长度估算了山地阶段性隆升的时代,4个快速隆升期分别距今1200~1059ka,600~501ka,130~103ka,20~0ka,其间为3个相对稳定期
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| 关 键 词： | 忻定盆地 河流阶地 山麓剥蚀面 隆升 黄土 |
| 文章编号： | 0253-4967(2008)01-0187-15 |
| 收稿时间： | 2008-03-19 |
| 修稿时间： | 2008年1月16日 |
STEPWISE LANDFORMS AND QUATERNARY EPISODIC UPLIFTS OF MOUNTAINS AROUND XINDING BASIN |
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| ZHANG Shi-min,REN Jun-jie,LUO Ming-hui,DING Rui,L Zhi-qiang.STEPWISE LANDFORMS AND QUATERNARY EPISODIC UPLIFTS OF MOUNTAINS AROUND XINDING BASIN[J].Seismology and Geology,2008,30(1):187-201. |
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| Authors: | ZHANG Shi-min REN Jun-jie LUO Ming-hui DING Rui L Zhi-qiang |
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| Institution: | ZHANG Shi-min,REN Jun-jie,LUO Ming-hui,DING Rui,L(U) Zhi-qiang |
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| Abstract: | Xinding Basin is a typical Cenozoic graben-type basin in the northern Fenwei graben system,which is surrounded by mountains of 2000 to 3000m high above sea level. Downward from the peak to the piedmont on the basin side are respectively peneplanes of Beitai stage and Dianziliang stage in Paleogene,peneplane of Tangxian stage in Neogene,and seven-level river terraces and six-level pediments in Quaternary. Loess and paleosol sequences on the landforms are correlative to typical loess section,which is an ad |
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| Keywords: | Xinding Basin river terrace pediment uplift loess |
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