THE NEWLY-GENERATED NE-TRENDING YELLOW RIVER ESTUARY—NORTHWEST MIAO FAULT ZONE IN SOUTHEASTERN BOHAI BASIN

SEISMOLOGY AND GEOLOGY ›› 2007, Vol. 29 ›› Issue (4): 845-854.

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THE NEWLY-GENERATED NE-TRENDING YELLOW RIVER ESTUARY—NORTHWEST MIAO FAULT ZONE IN SOUTHEASTERN BOHAI BASIN

XU Jie¹, ZHANG Jin¹, ZHOU Ben-gang¹, L? Yue-jun², CHEN Guo-guang¹, JI Feng-ju¹, GAO Xiang-lin¹

1. Institute of Geology, China Earthquake Administration, Beijing 100029, China;
2. Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China

Received:2007-01-07 Revised:2007-04-25 Online:2007-12-04 Published:2009-09-01

渤海东南部NE向黄河口-庙西北新生断裂带的存在

徐杰¹, 张进¹, 周本刚¹, 吕悦军², 陈国光¹, 计凤桔¹, 高祥林¹

1. 中国地震局地质研究所, 北京 100029;
2. 中国地震局地壳应力研究所, 北京 100085

作者简介:徐杰,男,1943年生,1967年毕业于南京大学地质系大地构造专业,1986年在中国科技大学研究生院获得博士学位,研究员,博士生导师,主要从事新构造、地震构造和石油地质等研究,电话:010-62009154,E-mail:JFJ09@126.com.
基金资助:
国家自然科学基金(40238059)资助

Abstract

Abstract: Based on structural data of the Minghuazhen Formation(N₁²—N₂)and base of Quaternary system from Research Center of China Offshore Petroleum Company,there are about 600 faults developed in the region from Yellow River Estuary to the Changxing Island.Among them,nearly 500 faults trend NE-NEE,amounting to 83 percent of the whole fault group.The faults are about 5～20km long,and the longest one is 40～50km.Some of this set of faults result from reactivation of NE—NEE trending Tertiary faults,and the rest are the newly-generated.They form a NE-striking fault zone about 50km wide with right-lateral strike slip component.This fault zone is not controlled by Tertiary faults;it is a newly generated fault zone during Neogene.It proves the former speculation of the existence of the newly-formed Yellow River Estuary-Northwest Miao fault zone.

Key words: southeastern Bohai, Bohai M_S 7.4 earthquake, Minghuazhen Formation, newly generated fault zone

摘要： 根据中国海洋石油研究中心勘探研究院新取得的渤海明化镇组(N₁²—N₂)和第四系底部构造的资料,在从黄河口到长兴岛的NE向地带发育近600条断裂,其中NE—NEE走向的有近500条,占断裂总数的83%,一般长5～20km,最长40～50km。这组断裂有少数为NE—NEE向古近纪断裂新活动的产物,其余是新形成的,它们总体组成宽约60km的NE向断裂带,具右旋走滑性质。该断裂带不受古近纪断裂构造控制,属新近纪以来发育的新生断裂带。这一现象证实了以前推断的黄河口-庙西北新生断裂带的存在。

关键词: 渤海东南部, 渤海7.4级地震, 明化镇组, 新生断裂带

CLC Number:

P315.2

XU Jie, ZHANG Jin, ZHOU Ben-gang, L? Yue-jun, CHEN Guo-guang, JI Feng-ju, GAO Xiang-lin. THE NEWLY-GENERATED NE-TRENDING YELLOW RIVER ESTUARY—NORTHWEST MIAO FAULT ZONE IN SOUTHEASTERN BOHAI BASIN[J]. SEISMOLOGY AND GEOLOGY, 2007, 29(4): 845-854.

徐杰, 张进, 周本刚, 吕悦军, 陈国光, 计凤桔, 高祥林. 渤海东南部NE向黄河口-庙西北新生断裂带的存在[J]. 地震地质, 2007, 29(4): 845-854.

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THE NEWLY-GENERATED NE-TRENDING YELLOW RIVER ESTUARY—NORTHWEST MIAO FAULT ZONE IN SOUTHEASTERN BOHAI BASIN

渤海东南部NE向黄河口-庙西北新生断裂带的存在

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