f Clarification of structural problems of a lignite bed near Soma (Turkey) using gravity and geoelectric methods

A case history on the methodology applied in an integrated geophysical survey for lignite prospecting performed near Soma is presented. The tanks of geophysics were to describe tectonic features of the study area located in the vicinity of a lignite mine under production, to determine the depth and the orientation of the sequence containing lignite seams, moreover to delineate the lignite bed accurately. The lignite seams are embedded in Miocene marl-limestone sequence overlying high resistivity Triassic basement.