Emplacement and fabric patterns of plutons in the eastern periphery of the Moldanubian Zone; implications for geodynamic evolution of the Bohemian Massif

The Ph.D. thesis focuses on an analysis of the structural record and geochronology of selected calc-alkaline plutons emplaced in the rocks of the eastern periphery of the Moldanubian Zone (eastern margin of the Bohemian Massif). In addition, it includes an analysis of the tectonic and metamorphic record of the host rocks of the Polička and Zábřeh Units. The results revealed a number of important implications regarding the geodynamic evolution of the north- eastern part of the Bohemian Massif. The rocks of the Zábřeh Unit were metamorphosed under middle temperature and lower pressure conditions (T: 660 C, P: 0.6 Gpa). The structural record is defined by the superposition of regional steep E-W trending metamorphic fabric (S1) which was variably obliterated by means of intensive folding into S2 flat-lying foliation. This unit is in the northern part intruded by calc-alkaline rocks of the Zábřeh Intrusive Complex (354±4Ma, U/Pb on zircons) with calculated P-T crystallisation conditions of 706-795 řC and P: 0.3-0.4 Gpa. A contact metamorphic event took place within the host rocks in the proximity of the intrusion (T: 599-663 C, P: 0.4 Gpa). The internal fabric of the Zábřeh Intrusive Complex exhibits a magmatic to submagmatic gradient and the orientation of the intrusive contacts and magmatic..