Analysis Of Anomaly And Prospecting Prediction Of Nurgay Metallogenic Area In Alashan Youqi,Inner Mongolia

The geophysical exploration work in Nurgay Alashan,Inner Mongolia is part of the Nurgay 1:50000 regional geological mineral survey.Its purpose is to delineate the 1:50000 geochemical anomaly.After comprehensive analysis and geological mapping,we measure the abnormal area with good combination of geochemical anomaly and exploration elements and Excellent ore-forming geological conditions.At the same time,the project analysed the metallogenic prospects in abnormal areas and laid a good foundation for the next work.The primary mission is 1:10000 high-precision magnetic profile measurement with length of 50 km and 308 controlled source audio magnetotelluric sounding points.At last,in the project of magnetic prospecting,we finished 1:10000 high-precision magnetic profile measurement with length of 50 km,collected 1477 physical points,collected 148 inspective physical points,measured 359 magnetic specimens.In another project,we finished controlled source audio magnetotelluric sounding measurement with length of 12 km,collected 308 physical points,collected 14 inspective physical points,collected and measured 199 magnetic specimens and 555 electrical specimens.Through geophysical prospecting,the following results are obtained:1.The magnetic anomaly of the B-1 geochemical anomaly area is positive magnetic anomaly.In the south of the anomaly area,we delineate the C1 magnetic anomaly.According to the speculation,the reason of the magnetic anomaly should exist an extended deep ultrabasic rock mass,and it should match with the display range of maps of magnetic survey results.In the nickel ore spot,the element of nickel generally exists in ultrabasic rock mass.Above all of these,it can explain the reason of the magnetic anomaly in another way.The area has great advantage of metallogenic geological conditions.At the same time,it has a great prospect of exploration.2.CSAMT measurements were carried out in the area of Nurgay area,Alashan Right Banner,by using GDP-32 electric method workstation,we found out the spatial distribution,morphological character and the reason of the fractured zones.The fractured zones supposed are welled matching with the geological results.It was found out that the break essentially has the feature of north-dipping.