大庆石油地质与开发2018，Vol.37Issue(2)：40-47,8.DOI:10.19597/J.ISSN.1000-3754.201708076
辽东湾坳陷新生代走滑断裂体系及其成因
CENOZOIC STRIKE-SLIP FAULT SYSTEM AND ITS GENERATING MECHANISM FOR LIAODONG BAY DEPRESSION
摘要
Abstract
Bohai Bay Basin is a typical continental fault-depression basin,which development and evolution are controlled by Tanlu Strike-slip Fault Belt.Based on the latest block-jointed 3D fine seismic interpretation,with the help of the physical modeling experiment of the sand-box structure,Cenozoic fault-system characteristics and its generating mechanism of Liaodong Bay Depression were analyzed.The results show that there are 7 main faults developed in the depression,which are characterized by the structural framework of the alternate basin and range coupling;the ratio of the fault strike-slip quantity and the horizontal spread displacement of the derived extensional faults is about 3 ∶ 2;the quantity in Liaodong area is bigger than that in Liaoxi region,the upfaulted block of Tanlu Fault is the active plat of the strike-slip activities;Liaoxi'nan Uplift and Liaoxi Uplift were formed earlier at the early period of Caenozoic era,corresponding Liaodong Uplift formed later,strongly influenced by the strike-slip and compresso-shear actions,in Es3-Es1 sedimentary period,the uplifts gradually stripped from Jiaoliao Uplift;In early Oligocene epoch,Tanlu Fault activities were rather strong and controlled the reconstructed process of the basins and ranges in Liaodong Bay.关键词
辽东湾坳陷/新生代/郯庐断裂/走滑量/差异构造演化/辽东凸起/物理模拟Key words
Liaodong Bay Depression/Cenozoic/ Caenozoic era/Tanlu Fault/strike slip quantity/distinct tectonic evolution/Liaodong Uplift/physical modeling分类
能源科技引用本文复制引用
何京,吴奎,张江涛,彭靖淞..辽东湾坳陷新生代走滑断裂体系及其成因[J].大庆石油地质与开发,2018,37(2):40-47,8.基金项目
“十二五”国家重大科技专项“近海大中型油气田形成条件与分布”(2011ZX05023-006). （2011ZX05023-006）
