• 责任者：Gui Baoling (Key Laboratory of Marine Facies Reservoir Evolvement and Petroleum Enrichment ; Ministry of Education ; China University of Geosciences ; Beijing 100083 ; China) ; He Dengfa
• 刊名：Chinese Journal of Geology
• 出版年：2011
• 卷期：46(2)
• 关键词：伸展构造 ; extension tectonics ; 块断运动 ; block-fault movement ; 渤海湾盆地 ; Bohaiwan Basin
• 页码：p.426-444
• 图表：16 illus., 26 refs.
• 分类号：0300
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

This paper uses map-view restoration of Langgu fault-sag to study the characteristic of the fault blocks in fault-blocks in extensional basin. According to the segments of Daxing fault, the study area is divided into three zones: southwest zone, middle zone and northeast zone. The authors found that, the fault-blocks in southwest zone mainly rotate by clockwise,  and the direction of displacement is southeast to northwest; in middle zone,  the fault-blocks in middle-south zone mainly rotate by clockwise while in middle-east zone by anticlockwise,  and the direction of displacement is northwest to southeast,  and the displacement decreases from middle to the tips; in northeast zone,  the faul-tblocks mainly rotate by anticlockwise except that in second member of Shahejie group, and the direction displacement is nearly south to north. The different rotation between middle-south zone and middle-east zone results from the unbalanced stress which decreases from middle to the tips.