摘要
On the basis of comprehensively analyzing the cause of gravity and magnetic anomalies of basin, in this paper a series of processing and interpretation methods and techniques of integrated geophysical data for estimating the basement lithology were introduced. The formation-separating technique constrained by the seismic structural interface with gravity data can acquire the gravity anomalies caused by basement lithology, which is affected by density difference between interfaces. The method for calculating equivalent-density difference is neatly presented.