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Termomechanical and temporal evolution ot the Moravo-Silesian zone: examples of the Silesian domain and the Svratka window
Košuličová, Monika ; Štípská, Pavla (advisor) ; Pitra, Pavel (referee) ; Košler, Jan (referee)
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Thermal and mechanical aspects of burial and exhumation mechanisms within the Moldanubian orogenic root in South Moravia and Lower Austria
Racek, Martin ; Štípská, Pavla (advisor) ; Konopásek, Jiří (referee) ; Janák, Marian (referee)
This thesis repÍesents results of petrological and stuctural investigations at the eastem margin of the Bohemian Massif. The main objective is the understanding of mechanical and thermal aspects of the formation and exhumation mechanisms of the Moldanubian orogenic root domain. The studies has been carried at the south-eastem margin of the Moldanubian zone in Lower Aushi4 at the contact with the Brunia basement and are presented in the frame of recently developed new concept of lower crust exhumation by vertical extrusion. The first part (Chapter 1-3) shows results of detailed structural mapping combined with petrological study and thermodynamical modeling of the metamorphic processes. Chapters I and 2 are concerned with the area around the Drosendorf window (Moldanubian domain, South Moravia and Lower Austria). The Chapter I deals with detailed petrological investigation of individual structwes in the E-W profile going from high-grade rocks of the Gftihl unit across the Drossendorf window to the Brunia basement. The petrological investigation shows existence of an internal domain (the Drosendorf window) composed of predominantly metasedimenatry rocks of mid-crustal origin that preserve a prograde metamorphism up to 8 kbar. This unit is surrounded by lower crustal rocks with peak metamorphic...
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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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Geologický výzkum Antarktidy
Masarykova univerzita, Přírodovědecká fakulta, Brno ; Univerzita Karlova v Praze, Přírodovědecká fakulta, Praha ; Česká geologická služba, Praha ; Lisá, Lenka ; Holub, František ; Elster, Josef ; Štípská, Pavla ; Košler, Jan ; Mlčoch, Bedřich ; Nývlt, Daniel ; Mixa, Petr
Hlavním cílem projektu v tomto roce byl geologický výzkum v širším okolí budoucí stanice pro potřeby projektovaného biologického monitoringu: Podrobné geologické mapování území; Studium zdrojových oblastí tillů a glacifluviálních sedimentů na ostrově James Ross ve vztahu k paleoklimatologickému a paleogeografickému vývoji oblasti; Geomorfologický výzkum kamenných ledovců, periglaciálních a paraglaciálních fenoménů na ostrově James Ross; Vývoj zalednění na ostrově James Ross, studium glaciálních a glacimarinních sedimentů terciérního i kvartérního stáří a zalednění. Byly realizovány tyto práce: geologické mapování v měřítku 1 : 25 000; Podrobná geologická dokumentace; Odběr horninových vzorků.
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