The paper presents research results obtained during the exploration of copper and silver deposits on the southern rim of the Wolsztyn–Pogorzela High in terms of identification of the regional geological structure of Permian and Mesozoic sediments, with particular focus on tectonic zones. It discusses a new methodology of developing seismic and gravimetric data in the form of sections of effective reflection coefficients (ERC) and vertical gravimetric cross-sections, which in combination with borehole logging allowed for the identification or an update of the knowledge about regional tectonic zones which are missing from the maps of the sub-Zechstein substrate prepared to date. The discussion of the methodology uses the example of two tectonic zones: the Rawicz and Oleśnica grabens. Conversion of seismic sections into ERC cross-sections made it possible to trace strata of smaller thickness and facilitated the identification of low-amplitude dislocations. Vertical gravimetric cross-sections confirm the credibility of the interpreted faults and grabens, also showing whether the faults are deeply rooted. Historical geophysical materials developed in this manner constitute an important supplement to the identification of the geological structure of the Lower Silesian Basin and in particular, the tectonic zones which may provide ways of migration and circulation of solutions, as well as the ore generation zones. The collected materials may be used to supplement the structural and tectonic maps of the sub-Zechstein substrate in the Lower Silesian Basin, and the applied methodology and data analysis may be used in other regions of Poland.