New Understanding Of Fuzhou-Yongfeng Fault Structure

The Fuzhou-Yongfeng fault is an inseparable branch of the Dexing-Suichuan fault,which is generally considered to be a long-lived controlled rock-controlled ore-controlled fault.The extension of the fault in Jiangxi Province is about 540 km.The northeastern section of the fault is called the northeastern deep fault of the northeastern part of the country,also known as the Dexing-Dongxiang fault.The Fuzhou-Yongfeng fault is the middle of it.One of the breaks,the Wan'an-Suichuan fault is in its southwestern direction.The project team(China Geological Survey Project-1212011220248,1212011120836)found that the Fuzhou-Yongfeng fault was very different from the previous ones when studying the Xiangshan Basin.For this reason,the Fuzhou-Yongfeng fault was re-determined.A single geophysical exploration technique is not able to fully understand the whole fault structure.Combining the physical parameters of the study area,geological data and the basic characteristics of the heavy magnetic field,this paper uses the Euler three-dimensional deconvolution technique to study the geologic body of the study area(fracture).Boundary identification,combined with horizontal gradient method,analytical signal method,Theta map method,Tilt gradient method,identify and contrast the boundary of geological body(fracture)in the study area;use remote sensing technology to explain the advantage of fault structure interpretation In addition,the fracture is further determined;in addition,an inversion study is carried out using an MT line and a CSAMT line data spanning the structure in the study area,and the fracture is detailedly characterized to fully determine the FuzhouYongfeng fault.On the basis of previous studies,I conducted a detailed study on the Fuzhou-Yongfeng fault through modern gravity and magnetic inversion techniques and remote sensing interpretation,and redefined the Fuzhou-Yongfeng fault structure.Through the MT/CSAMT inversion,the location and tendency of the Fuzhou-Yongfeng fault were determined.It lays the foundation for urban geology,disaster geology,environmental geology,agricultural geological research and mineral investigation.