| Seismic profiles across the middle Tan-Lu fault zone in Laizhou Bay, Bohai Sea, eastern China | |
| Yu, Zhaohua1,2; Wu, Shiguo1,3; Zou, Dongbo4; Feng, Deyong4; Zhao, Hanqing4 | |
| 2008-08-25 | |
| 发表期刊 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| ISSN | 1367-9120 |
| 卷号 | 33期号:5-6页码:383-394 |
| 文章类型 | Article |
| 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. |
| 关键词 | Strike-slip Fault Balanced Cross-section Tectonic Evolution Tan-lu Fault Zone Bohai Sea |
| 学科领域 | Geosciences, Multidisciplinary |
| DOI | 10.1016/j.jseaes.2008.03.004 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000259419400008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/5088 |
| 专题 | 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 |
| 第一作者单位 | 中国科学院海洋研究所 |
| 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. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
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