| The polymetallic deposit in Hutouya area is a deposit in Qimantag area of Qinghai Province.Through many years of exploration in this area,the copper,lead and zinc polymetallic resources have reached a large scale.However,with the deepening of prospecting,it is more and more difficult to find minerals.Most of the minerals that can be found in surface geochemical exploration and geology have been found.Most of the area is covered by Quaternary and volcanic rocks on the surface of the earth,It's very difficult to find ore?In the past,the ore-seeking work in this area mainly carried out 1:10000 geological mapping,1:10,000 magnetic method and 1:50,000 water system sediment measurement.Geophysical exploration also has a small amount of magnetic and electric comprehensive profiles,and geophysical surveys of different annual measurements.The profile parameters are not consistent,such as power supply time,device,pole distance,etc.,and the quality is uneven.Geological work does not know much about the hidden,semi-concealed rock mass,structure,stratum,carbon-bearing scale,and scale of pyrite mineralization in the region.Therefore,in 2014-2016,the Geological Survey Bureau of Qinghai Province carried out the “1,500,000 comprehensive geophysical survey of the Binggou-Hutouya area in Yuya Town,Qinghai Province”.In this paper,a large amount of data processing is carried out based on this project.The comprehensive analysis of land,material and chemical has obtained the following recognition:1.Through this work,10 strata are set up,5 rock masses,and 7 fault structures,including 3 in the Tanjianshan group,3 in the Langyashan Formation,and 4 in the Susu Formation.The rock mass is mainly Triassic.The display of the plaque-shaped monzonitic granite is obvious in the Hutou Cliff,and there is a large area of deepconcealment in the northern part of the area.For the first time,the hidden rock mass and deep formation of the area have a comprehensive understanding.2.Through the study of the characteristics of gravity and magnetic comprehensive anomaly,it is concluded that the high-magnetic(aeromagnetic,geomagnetic)high-gravity(extraordinary gravity anomaly)combination anomaly in this area is the(OST2)reflection of the Tanjianshan group basalt group,especially The aeromagnetic anomaly is more regular,and the geophysical landmark can predict and infer the hidden basalt group of the Tanjianshan group.3.High-precision gravity measurement shows that the acid intrusive rock mass and the stratum contact part form a gravity gradient dense zone for the skarn zone,such as the Hutouya II ore belt.From the gravity anomaly,the belt extends westward to the south of the duck ditch.It extends eastward to the north of the VI belt and has a large prospecting space.4.The local anomalies of 35 local anomalies were delineated,and four of them were verified.The ore-finding flags were summarized.On this basis,the skarn-type prospecting geological-geophysical model of the area was established.5.Four prospecting targets,such as Elegorgore,Kortre Gol,Hutouya,and Hari Gol,were divided,and the prospecting potential was predicted. |
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