The Application Of CSAMT To Explore Gold Ore In The North Gezhen Fault Zone Of Hainan

Gezhen fault zone is in western Hainan province mainly gold metallogenic belt,in recent years the main prospecting and mining are-400 m elevation above,in order to pull in the commercial exploration of deep gold mine,Department of Land Environment&Resources of Hainan province by Marine Geological Institute of Hainan province take the Hainan Gezhen fault zone of gold resource potential of deep investigation and assessment of the implementation of the project work.Through a comprehensive study on previous materials in the area according to the line 1 km distance setting the article 13 of Controlled Source Audio-frequency Magnetotelluric sounding(CSAMT)profile,combined with geological characteristics for qualitative and quantitative inversion and interpretation of the measured results,has concluded that fracture 13(number F1?F13)and F2,F4,F6,F8,F12 fault inference and F9?F12 for ore structure;Local anomalies for delineating 27 number(R1?R27),and R4,R19,R23,R26 and R27 inference for the deep ore advantageous position.In geophysical exploration,on the basis of inference,combined with the shallow ore deposit distribution,for the N2 line R4,R6 anomaly interpretation,F2 fractures,as well as the interpretation of the R20,N8 line abnormalities,F8 fault,construction ZK0801?ZK0804 four hole deep verification,new found 2 gold deep blind ore bodies,the control to the 2 gold orebody,and found that more than gold mineralization body(blet),to achieve the desired effect.According to the evaluation of the work,in the process of the practical prospecting,can not hope that the use of controlled source audio-frequency magnetotelluric sounding method directly find gold,but can be by looking for related to mineralization and rock mass structure,construction of ore deposit geological structure model,to forecast the concealed ore deposits.