Deep Geological Characteristics And 3D Modeling Of Late Triassic Shuangdinggou And Xinling Rock In Qingchengzi,Eastern Liaoning

During these days,in terms of not only the urgent demands of mineral resources in process of human development,but from aspects of the maturity of scientific exploration theory,methods of deep geophysical prospecting and the master of technology,our country has already came into comprehensive deep geological prospecting stages.And geology researches technology has inverted from two-dimensional to three-dimensional gradually.While three-dimensional geological modeling is the expression of all deep geology survey datas.On basis of previous work on geochemistry of late Triassic magma emplacement in this area,Shuangdinggou and Xinling rock related closely to Pn-Zn-Ag polymetallic mineralization were studied.On the basis of detailed field geology survey,gravity and magnetic anomaly ? electromagnetic depth profile anomaly characteristics were extracted,combined effect of anomaly combination were studied,occurrence morphology of intrusive rocks and extended direction of main branches were demarcated,and biggest occurrence range of surface projection and deep boundary basic outline were obtained.These are in favor of summarizing deep mineralization laws magmatic hydrothermal type deposits,and we obtained following achievements :(1)According to measured and inversion results of gravity,magnetism and electricity,combined with basic geological information constraints,the shape and features of concealed rock can be inferred and interpreted.And deep morphology of rock was established.(2)Boundary of Shuangdingou rock leaned outward normally.Large concealedpart occurred under Liaohe Formation nearby the rock.Deep concealed part of Xinling rock is connected with Shuangdinggou rock.And it occurred as apophysis part of Shuangding rock that occurres as batholiths.(3)Pn-Zn-Au-Ag deposit of Qingchengzi area is charaterzized by zonal distribution,magma activity in late Triassic provided favorable conditions for regional mineralization.(4)We preliminary summarize the deep mineralization rules and this provides reference evidences for concealed mineral predition of Qingchengzi area.