According to recent geological interpretations, the border of the East-European Craton (EEC) in SE Poland is located in the NE foreland of the Holy Cross Mts. Results of gravity and magnetic anomaly interpretations presented herein con®rm this. According to 3D and 2D gravity and magnetic modelling, the EEC borders the SW¯ank of the regional crystalline feature with increased magnetic and density properties, which occur in the SE part of the Teisseyre±Tornquist Zone (TTZ). This¯ank rests near a deep fracture delimiting the TTZ on SW. The feature is a cause of the regional magnetic gradient observed there. Two SE±NW belts of residual gravity anomalies (dislocations) are also identi®ed in the magnetic gradient zone, cutting Mesozoic and Palaeozoic formations. Results of geophysical and geological investigations show the importance of this dislocation zone and con®rm that it occurs in all crustal complexes and the upper mantle. Terra Nova, 13, 92±98, 2001 Fig. 1 Tectonic setting of Europe with the contour of Poland. Abbreviations: TTZ,

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