Three-dimensional Structure Modeling And Metallogenic Prediction In Luanchuan Ore District

Henan Luanchuan molybdenum,lead and zinc polymetallic ore concentration area is located in the split parts between the North China plate and Yangtze plate of the East Qinling tectonic belt.Also,it is an important part of the East Qinling molybdenum metallogenic belt.This paper is based on establishing the geological,geophysical and remote sensing etc.multiple database of the study area.According to the 2-D and 3-D software platform,it analyzes and summarizes tectonic characteristics in the study area from two aspects.It establishes 3-D structural framework of Luanchuan ore concentration area and predicts molybdenum,lead and zinc mineral resources in the study area.The main achievements are as follows:(1)On the basis of regional geological tectonic background and Mo polymetallic metallogenic model of research area,according to the minerals,geological,geophysical and remote sensing data.This paper establishes geological information databases of the study area(800 km2)and uses 2-D and 3-D visualization technology to express the database information.(2)According to the needs of structural interpretation and analysis,3-D modeling technology is adopted to construct the DTM,rock and ore formation 3-D model in the study area on the basis of geological data,geophysical data,remote sensing data,section data and mines data.(3)Based on geological data,and combined with remote sensing image processing and information extraction technology to establish the surface structural interpretational symbol in the study area,this paper comprehensively interpret linear and ring structures in the study area,and it comprehensively analyze of the line ring structure distribution,contact and formation characteristics in the multivariate data in 3-D environment.(4)Based on the metallogenic geological background and the characteristics,nature of structure,and combined the connection between structure,geophysical anomaly information and the remote sensing information in the study area,this paper constructs 3-D deep tectonic interpretational symbol.It uses geological section,geophysical profile and survey information to constrain and describe the deep form of structure and build the 3-D structural framework model in the study area with the 3-D software platform-Micromine.(5)Molybdenum,lead-zinc metallogenic regularities in the study area are summarized,and 3-D ore-prospecting criteria(variable)in scale of ore concentration area is established.Combined with magma-hydrothermal ore-forming model in the study area,this paper optimally defines the molybdenum,the lead-zinc metallogenic prospect areas.