冯阵东, 谭浩林, 吴伟,等.郯庐断裂右旋走滑活动对东濮凹陷构造演化的影响[J].河南理工大学学报（自然科学版）,2023,42(5):72-79.

FENG Z D, TAN H L, WU W,et al.Influence of dextral strike-slip movement of Tanlu fault zone on the tectonics evolution of Dongpu Depression[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(5):72-79.

郯庐断裂右旋走滑活动对东濮凹陷构造演化的影响

冯阵东1, 谭浩林1, 吴伟2, 王光绪2, 刘惟庆2, 魏国营1, 贾天让1

1.河南理工大学 安全科学与工程学院 河南 焦作 454000;2.河南理工大学 资源环境学院 河南 焦作 454000

摘要:太平洋板块俯冲方向改变，造成郯庐断裂由左旋向右旋走滑转变，渤海湾盆地东部各个凹陷对该构造事件响应明显，盆地西部的东濮凹陷是否受其影响以及影响程度如何直接影响东濮地震解释方案的制定。结合三维地震和深部地球物理资料，分析兰聊断层的控盆特征；根据雁列断层组合演化与区域年代资料，探讨雁列组合与区域构造活动的耦合关系；通过低序级断层走向统计，明确该区新生代所处的应力场特征。结果表明：兰聊断层西部分支是控制东濮凹陷整体结构的关键断层；雁列断层组合形成时间与区域右旋走滑耦合性差；东濮地区古近纪应力场稳定，未见板块俯冲方向改变前后的明显差异；拉张应力是东濮新生代构造演化主要动力，右旋扭应力对该区构造影响较小。

关键词:郯庐断裂;东濮凹陷;边界断层;雁列组合;应力变化;右旋走滑

doi:10.16186/j.cnki.1673-9787.2021060022

基金项目:国家自然科学基金资助项目（41872112）

收稿日期:2021/06/04

修回日期:2021/08/28

出版日期:2023/09/25

Influence of dextral strike-slip movement of Tanlu fault zone on the tectonics evolution of Dongpu Depression

FENG Zhendong1, TAN Haolin1, WU Wei2, WANG Guangxu2, LIU Weiqing2, WEI Guoying1, JIA Tianrang1

1.College of Safety Science and Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.Institute of Resources & Environment，Henan Polytechnic University，Jiaozuo  454000，Henan，China

Abstract:The direction of the Pacific plate subduction changed，which caused the change of the Tanlu fault from sinistral to dextral strike-slip.The various depressions in the east of the Bohai Bay Basin clearly responded to this tectonic event.Whether the Dongpu Depression in the west of the basin was affected by it and to what extent，its conclusions directly affected the formulation of the seismic interpretation scheme in this area. Combining 3D seismic and deep geophysical data，the basin-controlling characteristics of the Lanliao fault were analyzed.According to the evolution of the en-echelon fault assemblage with regional chronological data，the coupling relationship between the en-echelon assemblage and regional tectonic activity was discussed.Through the statistics of the strikes of low-order fault，the characteristics of the stress field in the Cenozoic in this area were clarified.The analysis results showed that the western branch of the Lanliao fault was the key fault that controled the overall structure of the Dongpu Depression；the formation time of the en-echelon fault assemblage was poorly coupled with regional dextral strike-slip；the Paleogene stress field in the Dongpu Area was stable，and there was no obvious difference before and after the change of plate subduction direction.It was proposed that extensive stress was the main driving force of Dongpu Cenozoic tectonic evolution，and the dextral torsional stress had limited influence on the tectonics of this area.

Key words:Dongpu Depression;border fault;en-echelon assemblage;variation of stress;dextral strike-slip;

郯庐断裂右旋走滑活动对东濮凹陷构造演化的影响_冯阵东.pdf