Geological,Geophysical And Geochemical Characteristics And Comprehensive Information Prospecting Prediction In Dongshengmiao Area,Inner Mongolia

Dongshengmiao area is located in the southern foot of the middle part of Langshan Mountain,which is the key prospecting area in the Langshan-Zhaertaishan metallogenic belt in the western part of the northern margin of North China Plate.The famous Dongshengmiao super-large Pb-Zn polymetallic deposit is located here.This belt is characterized by Proterozoic SEDEX type deposits,and has great prospecting potential.The further geophysical and geochemical exploration and the study of typical deposits in the region are helpful to expand the prospecting results of the metallogenic belt,and is helpful to the research level promotion,which is of great significance to the research and prospecting work of the Langshan-Zhaertaishan metallogenic belt.This paper takes the Regional Metallogenic theory and the ?Trinity?prospecting prediction model as the main guiding ideology,and carries out the work around the idea of comprehensive information and quantitative prediction.Based on the 1:50 000 geological mapping,aeromagnetic,gravity and stream sediment survey conducted by predecessors in the region,we carried out special geological mapping,IP intermediate gradient survey(anti-interference electrical method)and IP sounding.Mainly studied the metallogenic geological conditions and prospecting prediction model,typical deposits and key regional research,geophysical and geochemical data processing and interpretation,metallogenic prediction and target area optimization.Then the prospecting prediction model is established to find out the deep geology,structure and metallogenic characteristics of the study area,and to locate and quantitatively evaluate the resource potential of the study area,which points out the direction for the next prospecting work in the area.By studying the geological background of Dongshengmiao ore field and the metallogenic geological characteristics of typical deposits,the metallogenic geological body,metallogenic structure and metallogenic structural plane are determined,and the metallogenic regularity and prospecting criteria are summarized.The prospecting prediction factors are summarized and the geological prospecting prediction model is established.Through 1:50 000 IP intermediate gradient measurement,two low-middle resistance-middle-high polarization anomalies are delineated,which are in good agreement with the distribution of ore-bearing strata.Through comprehensive information metallogenic prediction,the resource amount of the study area is evaluated in terms of positioning and quantitative aspects,and one prospecting target area is delineated.It is considered that the Dongshengshe prospecting target area has a great prospect of lead-zinc polymetallic ore prospecting,which can be used as the key object in the future.