3D Geological Modeling And Prospecting Direction Of Baiyun-Xiaotongjiapuzi Gold Deposit In Eastern Liaoning Province

Qingchengzi ore cluster is located in the northeast of Qingchengzi Town,Fengcheng City,Liaoning Province,and the geotectonically located in the eastern part of the northern margin of the North China Craton-the southeast section of Liaoji Rift metallogenic belt.Taking Baiyun-Xiaotongjiapuzi gold mine field(Baiyun-Huadanzi mining area,Taoyuan-Linjiasandaogou mining area,Gaojiapuzi-Xiaotongjiapuzi gold mine area)as an example,this paper systematically collected geological data of Baiyun-Xiaotongjiapuzi gold mine field,combined with special data of team scientific research projects,based on SKUA-GOCAD 3D geological modeling analysis platform,The multi-parameter database and 3D geological model are established.Based on the establishment of the 3D geological model,the complex fold structure and the spatial distribution of "silica-calcium surface" of the gold field are shown.Combined with the research on the metallogenic mechanism of the Baiyun-Xiaotongjiapuzi gold field,the deep metallogenic potential analysis of the Baiyun-Xiaotongjiapuzi gold field is carried out,and the favorable ore-forming site and ore-rich space are proposed.The achievements and understandings are as follows:1.The multi-parameter database of Baiyun-Xiaotongjiapaozi gold deposit including geology,exploration engineering,geophysical exploration and geochemical exploration is constructed.2.On the basis of 1:10,000 and 1:50,000 multi-parameter mapping results and 3D geological modeling of ore body,the geological data of Baiyun-Xiaotongjiapuzi ore concentration area were systematically sorted out,and 178 geological sections of Baiyun-Xiaotongjiapuzi ore concentration area were cut.Based on the section of geological map,combined with the structural framework of Baiyun-Xiaotongjiapuzi gold field,3D geological modeling is carried out for ore-forming rock mass,fault,stratum and orebody,and the surface model,fault model,rock mass model and stratum model of Baiyun-Xiaotongjiapuzi gold deposit field are constructed according to the existing geological and geophysical interpretation data.The 3D visualization of ore-controlling geological factors reflects the complex fold morphology of Baiyun-Xiaotongjiapuzi ore concentration area.3.Based on the establishment of multi-parameter database and 3D geological model of Baiyun-Xiaotongjiapuzi gold deposit field,three algorithms of logistic regression,evidence weight method and random forest method are used to predict the favorable ore-forming positions.The prediction of target area is based on the stratigraphic fold structure and deep geophysical exploration,and combined with the actual geological situation of the study area,six metallogenic targets are delineated in the depth of Baiyun-Xiaotongjiapuzi gold field.4.Through the 3D geological modeling and metallogenic prediction work,the combination of geological modeling and attribute modeling of mining area is realized,and the purpose of displaying metallogenic elements and comprehensively analyzing metallogenic geological conditions through 3D space is achieved.At the same time,borehole verification was carried out in target area No.4 and No.5,which proved the reliability of 3D metallogenic prediction.