3D geological model of Bairendaba Ag-Pb-Zn ore field, northeastern China, based on integrated geophysics

Bairendaba Ag-Pb-Zn ore field, located in the southwestern part of the Greater Khingan Range, is one of the most representative ore that found by geophysical and geochemical methods in Inner Mongolia, China. Bairendaba ore field has rich mineral reserves, including 8000 tons of Ag, and 3 million tons of Pb and Zn. Since the ore field was discovered in 2001, a large number of ore bodies have been found by IP and other geophysical methods in this area. However, a high-level integrated geophysical interpretation had not been completed. A new study of 3D geology model, based on gravity, magnetic, IP and surface wave method, reveals subtle image of the ore field. A 3D forward modeling was conducted to include faulting and folding systems for the inversion. Moreover, the non-uniqueness of geophysics in interpretation has been constrained by integrated geophysical methods, geology profiles and drilling holes. Such a 3D visualization can illustrate the depth, thickness, attitude and other key properties of strata. Our study provides a subtle approach to delineate complex ore fields, and suggests the unexploited western district has a high resource potential in greater depth.