Joint inversion of gravity,magnetic and seismic data of the South Yellow Sea Basin
Hou Fang-hui1,2,3, Tian Zhen-xing2, Zhang Xun-hua2, Zhang Zhi-xun2, Li San-zhong1
1. Ocean University of China,Qingdao, Shandong 266003, China;
2. Key Laboratory of Marine Hydrocarbon Resource and Geology,Qingdao Institute of Marine Geology,Qingdao, Shandong 266071, China
Abstract：The south Yellow Sea Basin,based on the pre-Nanhua metamorphic basement of the Lower Yangtze Platform,is a polycycle basin with a sandwich-type construction.The geologic evolution of the basin can be divided into three stages:the Nanhua-early and middle Triassic marine basin stage,the late Cretaceous-Paleogene graben fault basin stage and the Neogene-Quaternary depression basin stage.Gravity and magnetic anomalies restrained by seismic data are inverted by 2.5D gravity-magnetic-seismic inversion from newly acquired seismic,gravity,and magnetic data.The inversion results indicate that the joint inversion method is helpful to research the contact relation between the basin and mountains,and to identify fault distribution,deep targets and favorable structural traps in future oil and gas exploration.
