Abstract:
In recent years,a large number of geophsical works has been done in Lead and Zinc mine of Dingjiashan ore block,Meixian area in Fujian Province.Based on the ore samples magnetic data in different boreholes,we set up the relationship between ore properties parameter and logging data,and delineated magnetic anomaly zones through tri-component magnetic survey and IP method in the study area.The results show ore bed gently inclined westward,abnormal ore block were caused by magnetite and pyrrhotite(mineralization),while the delineated three anomalous zones in the WN of borehole was caused by the lead and zinc deposit,which coincided with the actual geological conditions.Therefore,determining and describing the lead and zinc ore block scale and spatial distribution on the basis of geophysical methods,we can see that the methods has good applicability and parcticability,which can provide evidence to look for the deep deposit in exploration.