Deformation characteristics and analog modeling of transtensional structures in the Dongying Sag,Bohai Bay Basin

作     者：Dawei DONG Li ZHAO Weizhong ZHANG Jiyan LI Ruixiang ZHANG Jianlei YANG Guangzeng WANG Dawei DONG;Li ZHAO;Weizhong ZHANG;Jiyan LI;Ruixiang ZHANG;Jianlei YANG;Guangzeng WANG

作者机构：Shandong Institute of Petroleum and Chemical TechnologyDongying 257061China College of Resources and EnvironmentShandong Agriculture UniversityTai᾽an 271018China Geophysical Research Institute of Shengli Oilfield Branch CompanySINOPECDongying 257022China Research Institute of Petroleum Exploration&DevelopmentShengli Oilfield CompanySINOPECDongying 257000China College of Marine GeosciencesOcean University of ChinaQingdao 266100China 

出 版 物：《Frontiers of Earth Science》 (地球科学前沿（英文版）)

年 卷 期：2024年第18卷第1期

页      面：227-241页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 082002[工学-油气田开发工程] 

基　　金：Natural Science Foundation Project of Shandong Province(No.ZR2020MD036) the This study was financially supported by the National Natural Science Foundation of China(Nos.42072162 and 42072235) 

主　　题：transtensional structure seismic interpretation analogue modeling dynamic mechanism Dongying Sag 

摘      要：Hydrocarbon exploration in the Dongying Sag is constrained by the development of many Cenozoic transtensional structures with complex patterns and dynamic *** study uses seismic interpretation and analog modeling to investigate these transtensional *** results include dividing these transtensional structures into boundary fault,oblique rifting,and deep strike-slip fault controlled structures,according to the relationships between main and secondary *** developed in the steep slope zone,the central sag zone,and the slope zone,*** profile,the transtensional structures formed appear to be semi-flower-like,step-like,or *** plan-view,they appear to be broom-like,soft-linked,or en-echelon ***,these transtensional structures are controlled by the oblique normal slip of boundary faults,by the oblique extension of sub-sags,and by the later extension of deep strike-slip *** geometric deformation of these transtensional structures is controlled by the angles between the regional extension direction and the strike of boundary faults,deep faults,or sub-sags,where a larger angle corresponds to less developed transtensional ***,the transtensional structures in the Dongying Sag were created by multi-phase and multi-directional extensions in the Cenozoic—which is also controlled by pre-existing *** strike of newborn secondary faults was determined by the regional extension direction and pre-existing structures.