| A recent paleoearthquake on Qingfengling seismic fault of Tanlu fault zone |
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| 作者姓名： | 杨晓平 宋方敏 张兰凤 何宏林 李传友 王志才 |
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| 作者单位： | [1]Institute of Geology, China Earthquake Administration, Beijing 100029, China [2]Earthquake Administration of Shandong Province, Ji＇nan 250014, China |
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| 基金项目： | Project ＂City Active Fault Experimental Exploration＂ from National Development and Reform Commission （20041138）; and the project ＂Active Fault Exploration and Seismic Safety Assessment of Weifang City, Shandong Province＂. |
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| 摘 要： | Introduction
The Tanlu fault zone lies in the eastern China, which is an important huge active fault with a long history. It has experienced a complex generation and evolution process and affects significantly the regional structure, paleogeography, magma activity, minerogenesis and earthquake activity in the area. With a length of 2 400 km, the fault zone consists of 2-4 or more parallel faults of 10-40 km in width, cutting through different geotectonic elements in the eastern China （FANG et al, 1986）. On July 25 in 1668, an extraordinarily large earthquake of M=8.5 occurred on the Changyi-Dadian fault （F1） that is an embranchment of Tanlu fault zone, resulting in a surface rupture with a total length of 130 km （LI et al, 1994; CHAO et al, 1995）. The paleoseismic study reveals that 3 events with a magnitude equal to 8 occurred on the Changyi-Dadian fault. The recent event occurred 3 500 a ago and the reoccurrence interval is about 3 500 a （LIN and GAO, 1987）. During the Tancheng earthquake （on July 25, 1668）, the Anqiu-Juxian fault was not ruptured, which was a Late Pleistocene active fault （ZHENG et al, 1988; GAO et al, 1988; CHAO et al, 1994） and was doubted as the seismogenic fault of the M=7.0 Anqiu earthquake occurred in 70 BC by certain geologists （CHAO et al, 1994）.
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| 关 键 词： | 古地震 地质期 断层 活跃度 |
| 文章编号： | 1000-9116（2006）02-0225-06 |
| 收稿时间： | 2005-05-19 |
| 修稿时间： | 2006-01-05 |
A recent paleoearthquake on Qingfengling seismic fault of Tanlu fault zone |
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| YANG Xiao-ping,SONG Fang-min,ZHANG Lan-feng,HE Hong-lin,LI Chuan-you,WANG Zhi-cai.A recent paleoearthquake on Qingfengling seismic fault of Tanlu fault zone[J].Acta Seismologica Sinica(English Edition),2006,19(2):225-230. |
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| Authors: | YANG Xiao-ping SONG Fang-min ZHANG Lan-feng HE Hong-lin LI Chuan-you WANG Zhi-cai |
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| Institution: | 1. Institute of Geology, China Earthquake Administration, Beijing 100029, China
2. Institute of Geology, China Earthquake Administration, Beijing 100029, China;Earthquake Administration of Shandong Province, Ji'nan 250014, China |
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| Abstract: | Introduction The Tanlu fault zone lies in the eastern China, which is an important huge active fault with a long history. It has experienced a complex generation and evolution process and affects significantly the regional structure, paleogeography, magma activity, minerogenesis and earthquake activity in the area. With a length of 2 400 km, the fault zone consists of 2～4 or more parallel faults of 10～40 km in width, cutting through different geotectonic elements in the eastern China (FANG et al, 1986). On July 25 in 1668, an extraordinarily large earthquake of M=8.5occurred on the Changyi-Dadian fault (F1) that is an embranchment of Tanlu fault zone, resulting in a surface rupture with a total length of 130 km (LI et al, 1994; CHAO et al, 1995). |
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| Keywords: | Tanlu fault zone active fault paleoearthquake TL age |
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