| 中国东部城市地区隐伏断裂上断点与最新活动时代关系的初步分析——以邢台、唐山地震区为例 |
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| 引用本文： | 李传友,汪一鹏,王志才.中国东部城市地区隐伏断裂上断点与最新活动时代关系的初步分析——以邢台、唐山地震区为例[J].地震地质,2007,29(2):431-445. |
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| 作者姓名： | 李传友 汪一鹏 王志才 |
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| 作者单位： | 1. 中国地震局地质研究所,北京,100029
2. 中国地震局地质研究所,北京,100029;山东省地震局,济南,250014 |
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| 基金项目： | 国家发展与改革委员会发改投资项目 |
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| 摘 要： | 中国东部城市地区大多为较厚第四系松散物覆盖区,许多城市附近发育了具有相当规模的隐伏断裂。在这些第四系较厚覆盖区发育的隐伏断裂的上断点是否代表了断裂的最新活动时代?文中通过对邢台、唐山等发生过强震的中国东部城市附近地区地质、地球物理、地震活动、地形变等资料的综合分析,来讨论这些较厚第四系覆盖区隐伏断裂的上断点与断裂的最新活动年代的关系问题。初步分析表明,作为邢台地震和唐山地震发震断裂的新河断裂和唐山断裂带,并不象其上断点显示的为晚更新世不活动断裂或者为局部活动段,而均为大型活动断裂。由此认为,在中国东部沉积层较厚地区,不能完全根据断裂断错的最新地层确定断裂的最新活动时代。对于一条穿过新沉积较厚地区的断裂,其最新活动时代应根据构造背景、断裂对新地层的控制作用、断错最新地层、新地层沉积厚度、构造地貌、地震活动、地形变、现今构造应力场等综合判定
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| 关 键 词： | 隐伏断裂 上断点 活动时代 |
| 文章编号： | 0253-4967（2007）02-0431-15 |
| 修稿时间： | 2006-09-27 |
SOME ANALYSES ON THE RELATION BETWEEN THE UPPER OFFSET POINT AND THE LATEST ACTIVITY TIMES OF BURIED FAULTS IN CITIES OF EASTERN CHINA:TAKING THE XINGTAI AND TANGSHAN EARTHQUAKE REGIONS AS AN EXAMPLE |
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| LI Chuan-you,WANG Yi-peng,WANG Zhi-cai.SOME ANALYSES ON THE RELATION BETWEEN THE UPPER OFFSET POINT AND THE LATEST ACTIVITY TIMES OF BURIED FAULTS IN CITIES OF EASTERN CHINA:TAKING THE XINGTAI AND TANGSHAN EARTHQUAKE REGIONS AS AN EXAMPLE[J].Seismology and Geology,2007,29(2):431-445. |
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| Authors: | LI Chuan-you WANG Yi-peng WANG Zhi-cai |
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| Affiliation: | 1. Institute of Geology, China Earthquake Administration, Beijing 100029, China;2. Shandong Earthquake Administration, Jinan 250014, China |
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| Abstract: | The urban area in the eastern China region is mostly covered by the relatively thick loose Quaternary deposits,below which,in many cities,there exist many considerably large buried faults.In these thick-Quaternary-covering areas,does the date of the upper layers dislocated by the buried faults represent the latest faulting? In this paper,based on the integrated analysis on the data of geology,geophysics and earthquakes of cities in the east of China,including Xingtai and Tangshan,we discussed the relation b |
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| Keywords: | buried fault the upper offset point the activity times |
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