Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China

doi:10.1016/j.jseaes.2008.03.004

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	Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China
	Yu, Zhaohua 1,2; Wu, Shiguo 1,3; Zou, Dongbo 4; Feng, Deyong 4; Zhao, Hanqing 4
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2008-08-25
卷号	33 期号:5-6 页码:383-394
关键词	Strike-slip Fault Balanced Cross-section Tectonic Evolution Tan-lu Fault Zone Bohai Sea
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2008.03.004
文献子类	Article
英文摘要	The stratigraphic architecture, structure and Cenozoic tectonic evolution of the Tan-Lu fault zone in Laizhou Bay, eastern China, are analyzed based on interpretations of 31 new 2D seismic lines across Laizhou Bay. Cenozoic strata in the study area are divided into two layers separated by a prominent and widespread unconformity. The upper sedimentary layer is made up of Neogene and Quaternary fluvial and marine sediments, while the lower layer consists of Paleogene lacustrine and fluvial facies. In terms of tectonics, the sediments beneath the unconformity can be divided into four main structural units: the west depression, central uplift, east depression and Ludong uplift. The two branches of the middle Tan-Lu fault zone differ in their geometry and offset: the east branch fault is a steeply dipping S-shaped strike-slip fault that cuts acoustic basement at depths greater than 8 km, whereas the west branch fault is a relatively shallow normal fault. The Tan-Lu fault zone is the key fault in the study area, having controlled its Cenozoic evolution. Based on balanced cross-sections constructed along transverse seismic line 99.8 and longitudinal seismic line 699.0, the Cenozoic evolution of the middle Tan-Lu fault zone is divided into three stages: Paleocene-Eocene transtension, Oligocene-Early Miocene transpression and Middle Miocene to present-day stable subsidence. The reasons for the contrasting tectonic features of the two branch faults and the timing of the change from transtension to transpression are discussed. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.; The stratigraphic architecture, structure and Cenozoic tectonic evolution of the Tan-Lu fault zone in Laizhou Bay, eastern China, are analyzed based on interpretations of 31 new 2D seismic lines across Laizhou Bay. Cenozoic strata in the study area are divided into two layers separated by a prominent and widespread unconformity. The upper sedimentary layer is made up of Neogene and Quaternary fluvial and marine sediments, while the lower layer consists of Paleogene lacustrine and fluvial facies. In terms of tectonics, the sediments beneath the unconformity can be divided into four main structural units: the west depression, central uplift, east depression and Ludong uplift. The two branches of the middle Tan-Lu fault zone differ in their geometry and offset: the east branch fault is a steeply dipping S-shaped strike-slip fault that cuts acoustic basement at depths greater than 8 km, whereas the west branch fault is a relatively shallow normal fault. The Tan-Lu fault zone is the key fault in the study area, having controlled its Cenozoic evolution. Based on balanced cross-sections constructed along transverse seismic line 99.8 and longitudinal seismic line 699.0, the Cenozoic evolution of the middle Tan-Lu fault zone is divided into three stages: Paleocene-Eocene transtension, Oligocene-Early Miocene transpression and Middle Miocene to present-day stable subsidence. The reasons for the contrasting tectonic features of the two branch faults and the timing of the change from transtension to transpression are discussed. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.
学科主题	Geosciences, Multidisciplinary
URL标识	查看原文
语种	英语
WOS记录号	WOS:000259419400008
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5089]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Petr Univ China Huadong, Qingdao 266555, Peoples R China 4.Shengli Oil Field, Geophys Res Inst, Dongying 257022, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhaohua,Wu, Shiguo,Zou, Dongbo,et al. Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2008,33(5-6):383-394.
APA	Yu, Zhaohua,Wu, Shiguo,Zou, Dongbo,Feng, Deyong,&Zhao, Hanqing.(2008).Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China.JOURNAL OF ASIAN EARTH SCIENCES,33(5-6),383-394.
MLA	Yu, Zhaohua,et al."Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China".JOURNAL OF ASIAN EARTH SCIENCES 33.5-6(2008):383-394.