Abstract:

The depth of the basement beneath the eastern part of the Three-river(Heilong Jiang,Songhua Jiang,Wusuli Jiang)basin is studied using the method of analytic continuaton on the basis of 1:200,000 magnetic and par-tially aeromagnetic data.Seismic measement and drilling data demonstrated that the method used is effective and relatively accurate.The theoretical deduction of formulae,data processing and result com-piling are described in a more detaited way.Finally,the accuracy of this method is also discussed.