Characters and its evolutionary process of Chengdong fault in the northeast of Jiyang depression
Abstract：Chengdong fault in the northeast of Jiyang depression is an important basin-controlling fault.Based on the fine interpretation of 3D seismic data of Chengdong area in Jiyang depression,and combined with correlation analysis technology,the structural characteristics as well as fault nature,evolution process and its formation mechanism were analyzed.The research results show that Chengdong fault is a characteristic strike-slip fault.According to the structural characteristics,Chengdong fault can be divided into two parts,the south section（F1） and north section（F2）.F1 fault manifested ＂dolphin effect＂ is the main body of Chengdong fault.F2 fault is consisted of SE-trending left-order en-echelon faults.The development history of Chengdong fault could divide into four stages,including the deposition periods during Kongdian formation to Member 4 of Shahejie formation,Member 3 of Shahejie formation to Lower Member 2 of Shahejie formation,Upper Member 2 of Shahejie formation to Dongying formation and Guantao formation to Minghuazhen formation.Regional tectonic background during different time periods controls the formation and evolutionary process of Chengdong fault.
Keywords：Chengdong faultstrike -slip faultevolutionary processJiyang depression
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 422-428 )