Discussion On The Application Of Integrated Geophysical Methods In The Exploration Of The Hariza Polymetallic Ore In Dulan County,Qinghai Province

The Harizha area of Dulan County,Qinghai Province is located in the eastern section of the East Kunlun Mountains and belongs to the multi-cyclone magmatic arc belt in the Dongkun area.The mining area has identified 4 large-scale metallogenic belts.The metallogenic types are mainly hydrothermal vein type,porphyry type and tectonic altered rock type,and the mineralization is closely related to magmatic activity.Since 2010,the research area has carried out pre-examination,census,detailed investigation and scientific research work mainly on copper,lead and zinc.It has completed a large number of geophysical explorations with different purposes and different scales,and accumulated rich basic materials for geophysical exploration.In the past,geophysical anomalies can better reflect geological bodies with different geological backgrounds,and generally judge the geology of geophysical anomalies.However,in terms of the application of data,only the annual geophysical exploration work is concerned,and no systematic collation and analysis studies have been conducted.The comparison between the ore body and the geophysical anomaly is carried out to compare and model the forward model.This paper relies on the related projects of the Harizha polymetallic ore exploration in Qinghai Province,and applies the comprehensive geophysical data of the Harizha Northwest Exploration Area in recent years.Based on the regional geological background,ore-controlling conditions,and the genetic type of the ore body,combined with the known ore body geophysical exploration in the mining area.The anomalous characteristics,through the analysis and research,explore the geophysical anomaly performance characteristics of the deposit,summarize the corresponding geophysical anomaly prospecting indicators,and establish three kinds of geophysical methods such as high-precision magnetic survey,IP ladder and audio magnetotelluric sounding(EH4).Combined prospecting model.Through the results of this research,it is believed that the magnetoelectric composition geophysical exploration method is used in rock intrusion and tectonic development areas,and the prospecting effect is outstanding;it is the prospect of the hydrothermal vein type II ore and tectonic altered rock type ore body V ore belt in the mining area.Providing a basis for expanding the size of the ore body.