渤海辽东湾坳陷走滑断裂差异变形特征

doi:10.11743/ogg20140507

石油与天然气地质 ›› 2014, Vol. 35 ›› Issue (5): 632-638.doi: 10.11743/ogg20140507

渤海辽东湾坳陷走滑断裂差异变形特征

余一欣^1,2, 周心怀³, 徐长贵³, 吴奎³, 柳屿博³, 杨克基¹, 周鑫³

1. 中国石油大学油气资源与探测国家重点实验室, 北京 102249;
2. 中国石油大学盆地与油藏研究中心, 北京 102249;
3. 中海石油(中国)有限公司天津分公司, 天津 300452

收稿日期:2014-06-25 修回日期:2014-08-12 出版日期:2014-10-08 发布日期:2014-10-17
作者简介:余一欣（1977- ），男，博士、副教授，盆地分析和构造地质学。E-mail：yuxin0707@163.com。
基金资助:
国家自然科学基金项目（41472117，91114202）；国家科技重大专项（2011ZX05002-006，2011ZX05031-001，2011ZX05029-002）；中国石油大学（北京）基金项目（KYJJ2012-01-11）。

Differential deformation of strike slip faults in the Liaodongwan Depression, offshore Bohai Bay Basin

Yu Yixin^1,2, Zhou Xinhuai³, Xu Changgui³, Wu Kui³, Liu Yubo³, Yang Keji¹, Zhou Xin³

1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
2. Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China;
3. Tianjin Branch of CNOOC China Ltd., Tianjin 300452, China

Received:2014-06-25 Revised:2014-08-12 Online:2014-10-08 Published:2014-10-17

摘要/Abstract

摘要：

走滑断裂是渤海辽东湾坳陷内的一类重要断裂，属于郯庐断裂带的组成部分，对辽东湾坳陷的地质结构和油气成藏都产生了重要影响。通过三维地震资料精细解释，揭示了辽东湾坳陷走滑断裂带的空间展布和分段差异变形特征。走滑断裂主要分布在辽东和辽中地区，总体呈北东走向，连续性较好，在剖面上发育花状构造，在平面上发育走滑双重构造和伸展叠瓦扇构造。通过对比不同地区走滑断裂带的变形特点，可以发现走滑断裂带具有明显的分段差异变形特征。总体上，可将辽东和辽中地区的走滑断裂带划分为南部的压扭段和北部的凸起段两大段，而且凸起段还可进一步根据凸起发育特征细分为复合凸起段、隐伏凸起段和单一凸起段。辽东凸起的形成主要受走滑断裂带的压扭性活动影响，而辽西凸起的形成主要是受地幔上隆导致的伸展作用控制，开始隆升的时间也早于辽东凸起。

关键词: 分段差异变形, 走滑断裂, 郯庐断裂带, 辽东凸起, 辽东湾坳陷

Abstract:

As an important fault type in the Liaodongwan Depression,strike slip faults are components of the Tan-Lu fault zone,and they have exerted major influences on the structural framework and hydrocarbon accumulation in the depression.Based on detailed 3D seismic interpretation,this paper reveals the spatial distribution and segmented differential deformation characteristics of the strike slip faults in the Liaodongwan Depression.The strike slip faults mainly occur in the eastern and central Liaodongwan Depression,trend northeast as a whole,and have good continuity.They appear as flower structures on sectional view,while appear as strike slip duplex and imbricated structures on plane view.Comparison of deformation features of strike slip faults in different areas shows that the strike slip fault zone features in obvious segmented differential deformation.The strike slip faults can be divided into two segments,namely transpressional segment in the south and uplifting segment in the north.The uplifting segment can be subdivided into complex-uplifting,buried-uplifting and single-uplifting segments according to the shapes of the uplift.The development of the Liaodong uplift was mainly controlled by the transpressional movement of the strike slip faults,but the Liaoxi uplift with earlier initiation of uplifting was influenced by extensional stresses resulted from mantle uplifting.

Key words: segmented differential deformation, strike slip fault, Tan-Lu fault zone, Liaodong Uplift, Liaodongwan Depression

中图分类号:

TE121.2

余一欣,周心怀,徐长贵,等. 渤海辽东湾坳陷走滑断裂差异变形特征[J]. 石油与天然气地质, 2014, 35(5): 632-638. doi: 10.11743/ogg20140507 Yu Yixin,Zhou Xinhuai,Xu Changgui,et al. Differential deformation of strike slip faults in the Liaodongwan Depression, offshore Bohai Bay Basin[J]. Oil & Gas Geology, 2014, 35(5): 632-638. doi: 10.11743/ogg20140507

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渤海辽东湾坳陷走滑断裂差异变形特征

Differential deformation of strike slip faults in the Liaodongwan Depression, offshore Bohai Bay Basin

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