bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>Cenozoic Episodic Subsidence in the Middle and North Part of Huanghua Depression, Bohai Bay Basin

• 责任者：Qi Peng (Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Ren Jianye
• 刊名：Earth Science
• 出版年：2010
• 卷期：35(6)
• 关键词：沉降 ; subsidence ; 构造演化 ; structural evolution ; 渤海湾盆地 ; Bohaiwan Basin ; 黄骅坳陷 ; Huanghua Depression
• 页码：p.1041-1052
• 图表：8 illus., 49 refs.
• 分类号：0300
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

 The middle and north area of Huanghua depression, located in the middle of the Bohaiwan Basin, is a significant Cenozoic tectonic unit. This study area underwent the episodic subsidence and the subsidence center migrated regularly which was interpreted through the analysis of the tectonic-sequence surface, syn-sedimentary fault’s activity and the back-stripping of the subsidence history.  The geometry feature and property of the fault system shows that the tectonic deformation of the study area was controlled by the NW-SE extending stress field in the rifting Episodic Ⅰ from Es₃ to Es₂. Especially, the accelerated westward subduction from the Pacific Plate to the Eurasia Plate triggered the southward expanding of the dextral slipping of the Tanlu fault and the activity of the north section of the Lanliao fault through the Huanghua Depression after Late Eocene.