College of Geoexploration Science and Technology��Jilin University��Changchun 130026��China

Magnetotelluric sounding method ( MT) has been widely used in the deep structure exploration�� Applying this method��the authors do the data processing and inversion of two magnetotelluric sounding profiles in eastern Jilin and Heilongjiang��and analyze the aeromagnetic and regional gravity data comprehensively�� Combining with the regional geological data��the authors make an inference to the regional tectonic and mineralization background�� The profile result shows that the metallogenic materials of porphyry and skarn-type ore deposits are related with the deep crust and mantle magma��and deep faults are the transport channels of magma and hydrothermal solution�� Mass of white granites are conducive to the formation of skarn ore deposits�� It is conducive to delineate porphyry molybdenum mineralization target by finding the deep structure between the granodiorite and K-feldspar granite�� The white granite rocks lie in the south and southeast of the tufts rocks have a similar structure condition with the tufts rocks��where is the worthy area to looking for skarn-type mineralization��