Tektonika elewacji radomszczańskiej na podstawie metod mezostrukturalnych
Abstract
TECTONICS OF THE RADOMSKO ELEVATION ON THE BASIS OF MESOSTRUCTURAL METHODS
Summary
The author's analysis of minor tectonic structures in rocks of the Radomsko Elevation (for location see Fig. 1) comprised measurements and statistic interpretation of attitude of beds, faults and slip structures, slicolites, stylolites and joint (Figs. 3, 5, 7-9). This analysis indicates that the elevation structure is not uniform. Its eastern part is predominated by tectonic structures of the western Mesozoic margin of the Holy Cross Mountains; with strikes of beds of about 150° (Fig. 2). Such Laramian structural pattern is also typical for the Chełm Anticline whereas the Smotryszów Anticline runs at azimuth of about 160° what is to be ref erred to dislocations of the Paleozoic substrate but rejuvenated after the Cretaceous. More westwards and closer to the Fore-Sudetic Monocline, a disjunctive tectonics is more and more important in modelling of tectonic structures of the elevation. Besides a fault-fold development of several large elements there are finer folds and flexures (Fig. 4) expressing displacements along secondary faults that accompany a reverse fault in the substrate (Fig. 6, cf. 13).
Similar azimuths of stylolites in the Radomsko Elevation (Fig. 7) as the ones described from the northeastern Mesozoic margin of the Holy Cross Mts prove (in spite of considerably different patterns of local structures) that their origin depend on deep regional reasons but not on local stresses (cf. 2).
Summary
The author's analysis of minor tectonic structures in rocks of the Radomsko Elevation (for location see Fig. 1) comprised measurements and statistic interpretation of attitude of beds, faults and slip structures, slicolites, stylolites and joint (Figs. 3, 5, 7-9). This analysis indicates that the elevation structure is not uniform. Its eastern part is predominated by tectonic structures of the western Mesozoic margin of the Holy Cross Mountains; with strikes of beds of about 150° (Fig. 2). Such Laramian structural pattern is also typical for the Chełm Anticline whereas the Smotryszów Anticline runs at azimuth of about 160° what is to be ref erred to dislocations of the Paleozoic substrate but rejuvenated after the Cretaceous. More westwards and closer to the Fore-Sudetic Monocline, a disjunctive tectonics is more and more important in modelling of tectonic structures of the elevation. Besides a fault-fold development of several large elements there are finer folds and flexures (Fig. 4) expressing displacements along secondary faults that accompany a reverse fault in the substrate (Fig. 6, cf. 13).
Similar azimuths of stylolites in the Radomsko Elevation (Fig. 7) as the ones described from the northeastern Mesozoic margin of the Holy Cross Mts prove (in spite of considerably different patterns of local structures) that their origin depend on deep regional reasons but not on local stresses (cf. 2).