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High-grade rocks of the Zábřeh Crystalline Complex
Jůzlová, Klára ; Lexa, Ondrej (advisor) ; Buriánek, David (referee)
This Bachelor thesis is focused on the Zábřeh Crystalline Unit and the belt of high-grade rocks in its southern part. The research is aimed to summarize existing knowledge about this unit, to correlate the Zábřeh Crystalline Unit with adjacent units and to confront various opinions on its position within the Bohemian Massif. The practical part of this thesis shows outputs of the initial phase of my ongoing research. Keywords: Zábřeh Crystalline Unit, Teplá-Barrandian Unit, Saxothuringicum, pre-Variscan tectonic evolution
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Conditions and mechanism of emplacement of the Saxon Granulite Massif in Saxothuringian
Ramešová, Olga ; Jeřábek, Petr (advisor) ; Štípská, Pavla (referee)
The Saxonian Granulite Massif in the Saxothuringian Domain of the Bohemian Massif, is represented by a single granulite body consisting of felsic and mafic granulites formed during Variscan tectono-metamorphic event. The granulites with peak metamorphic P-T conditions of ~2.3 GPa and 970-1060 řC (Fuhrman and Lindsley, 1988; Rötzler and Romer, 2001) were exhumed and emplaced into the palaeozic sedimentary cover sequence, which resulted into contact metamorphism affecting these metasedimentary rocks and development of a contact metamorphic aureole. In the map view, the granulite body has elongated shape with the long axis oriented in NE- SW direction and it is surrounded by the so called schist mantle reflecting the extent of the contact metamorphic aureole. Within two kilometers distance away from the contact with granulite body, the metamorphic grade in metasediments decreases from cordierite gneiss, andalusite bearing micaschist to phyllite. Detailed field structural analysis in the studied area revealed a deformation record associated with four main deformation phases. In granulites the oldest deformation fabric contains kyanite and sillimanite. This fabric is locally overprinted by the subhorizontal green schist facies fabric, mainly along the margins of the granulite body. In metasediments, the...
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