Interval density mapping for thick layers

A simple method for interval density determination in thick layers by joint analysis of surface and<br>subsurface gravity maps is presented in this paper. Method is designed for solving interval density<br>distribution problem in cases of significant lateral density variations above deep mines, where there is no<br>possibility to conduct gravity measurements along vertical shafts. Application of this method doesn't require<br>precise position and characteristics of anomalous masses. All that is necessary is a general idea of anomalous<br>zones distribution.