Characteristics of transfer zones under the influence of preexisting faults and regional stress transformation:Wenchang A subsag,Zhujiang River Mouth Basin,northern South China Sea  

作　　者：Wei LI Mingyue CAO Meifang MENG Caiwei FAN Hui LI Jia LI Wanqiu WU Ruiqing QIN Xingan LI Yiming LIU 

机构地区：[1]State Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,China [2]School of Geosciences,China University of Petroleum(East China),Qingdao 266580,China [3]Zhanjiang Branch,China National Offshore Oil Corporation Company,Zhanjiang 524057,China

出　　处：《Journal of Oceanology and Limnology》2024年第3期744-759,共16页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(Nos.42302155,42072169,42072235);the Natural Science Foundation of Shandong Province(No.ZR2023QD016);the China Postdoctoral Science Foundation(No.2022M713461);the Qingdao Postdoctoral Application Research Funds(No.QDBSH20220202067);the Fundamental Research Funds for the Central Universities(No.22CX06005A)。

摘　　要：A transfer zone in rift basins preserves important information on regional tectonic evolution and plays significant roles in hydrocarbon accumulation.Based on the systematic analysis of 3D seismic data and hydrocarbon accumulation conditions,the geometry,kinematics,and reservoir control of a large synthetic overlapping transfer zone in the south of the Wenchang A subsag in the Zhujiang(Pearl)River Mouth basin were investigated.Results indicate that the development and evolution of the transfer zone was controlled by the interaction between pre-existing faults and regional stress transformation.The intense rifting of the main faults of the transfer zone controlled the development of source rocks and faultcontrolled slope break paleogeomorphology.The strike-slip overprint since the Oligocene is conducive to the formation of a large-scale fault-anticline trap,and the secondary faults in the transfer zone contribute to the hydrocarbon transportation.The conjugate intersection area of the NE-and NW-trending faults offers more opportunity for hydrocarbon migration and accumulation.

关 键 词：transfer zone pre-existing fault regional stress transformation CENOZOIC Wenchang A Subsag Zhujiang(Pearl)River Mouth Basin 

分 类 号：P618.13[天文地球—矿床学]