Sequence Thickness and its Response to Episodic Tectonic Evolution in Paleogene Qikou Sag, Bohaiwan Basin

作     者：CHEN Si WANG Hua ZHOU Lihong HUANG Chuanyan WANG Jiahao REN Peigang XIANG Xuemei CHEN Si;WANG Hua;ZHOU Lihong;HUANG Chuanyan;WANG Jiahao;REN Peigang;XIANG Xuemei

作者机构：Key Laboratory of Tectonics and Petroleum ResourcesChina University of GeosciencesMinistry of EducationWuhan 430074China Faculty of Earth ResourcesChina University of GeosciencesWuhan 4300747China PetroChina Dagang Oilfield CompanyTianjin 300287China Department of Geology&LoggingJiangsu Petroleum Exploration BureauYangzhou 225000China China Petrochemical Nanjing Petroleum and Geophysical InstituteNanjing 2100147China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2012年第86卷第5期

页      面：1077-1092页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：support from the National Natural Science Foundation of China (Grant No.40872077) National Major Science and Technology Project of China (Grant No. 2011ZX05009-002) Open Project Foundation of Ministry of Education Key Laboratory of Tectonics and Petroleum Resources (Grant No. TPR-2011-09) 

主　　题：sequence thickness episodic tectonic evolution response relationship Paleogene Qikou Sag 

摘      要：The sequence stratigraphy framework of Paleogene of Qikou Sag has been built in this paper. The evolution law of episodic subsidence in Qikou Sag has been expounded, with the analysis of the characteristic of sequence thickness, as well as the study of consedimental tectonic activity, subsidence history, paleogeomorphology and the coupling relationship among them. The faults controlling action was the dominant mechanism during rifting stage I , as the depression was the dominant mechanism during rifting stage III, which embodies a process from intense disparity fault depression to integral subsidence. Meanwhile, under the control of regional faulting and later stage depression, subsidence rate centers and paleogeomorphic concave centers are always corresponding to the sequence thickness centers, and the changes of subsidence centers and paleogeomorphology concave centers are consistent with the migration of thickness centers, which presents the restriction, coupling and response among them and clarifies the law that tectonic activity controls the basin fill by means of controlling the subsidence rate and paleogeomorphology from contributing factor angle. On this basis, the dynamic evolution of the composite pattern of structure-subsidence-deposition in the fault controlling actic region during the three rifting stages and their petroleum geological significance has been discussed.